T.A. ABAKUMOVA, Engineer-Technologist (tamara.rifsm@gmail.com), E.I. YUMASHEVA, Engineer-Chemist-Technologist (mail@rifsm.ru) OOO RIF «Stroymaterialy» (9, bld. 3, Off. 225, Dmitrovskoe shosse, 127434, Moscow, Russian Federation)

About Problems of Representation of National Construction Science in International Data Bases An attempt to analyze the publishing activity of scientists, working in the field of construction, in the international scientific space is presented. As one of the reasons for a small number of publications in highly-rated foreign editions, a local character of studies for solution of engineering problems not having the international value is specified. The describing analysis of Russian publications in highly-rated foreign editions for the period of 1996–2015 was made with the use of the Scopus data base. It is revealed that the presence of Russian authors in the top-journals approaches 1.5‰ (promille). Conclusions are made that the availability of international collaboration increases the average indexes of articles quoted. The question is also raised about the need to optimize requirements for publishing activity of scientists of applied scientific directions, to change the concept of scientific research in the field of architecture and construction.

Keywords: publishing activity, citation, bibliometric indexes, international citation indexes.

References
1. Pislyakov V.V. Methods for evaluation of scientific knowledge in terms of citation. Sotsiologicheskii zhurnal. 2007. No. 1, pp. 128–140. (In Russian).
2. Tret’yakova O.V., Kabakova E.A. Opportunities and prospects of citation indexes in evaluating the results of a scientific institution. Ekonomicheskie i sotsial’nye peremeny: fakty, tendentsii, prognoz. 2013. No. 6 (30), pp. 189– 200. (In Russian).
3. Aleskerov F.T., Kataeva E.S., Pislyakov V.V., Yakuba V.I. Evaluation researchers contribution threshold aggregation method. Upravlenie bol’shimi sistemami. Spetsial’nyi vypusk 44: «Naukometriya i ekspertiza v upravlenii naukoi». 2013, pp. 172–189. (In Russian).
4. Chebotarev P.Yu. Scientometrics: how it can help to heal, not to maim? Upravlenie bol’shimi sistemami. Spetsial’nyi vypusk 44: «Naukometriya i ekspertiza v upravlenii naukoi». 2013, pp. 14–31. (In Russian).
5. Aref’ev P.G. Publication activity, the possibility of a scientific product growth and the traditional Russian question “What to do?” Universitetskaya kniga. 2013. No. 8, pp. 49–55. (In Russian).
6. Aref’ev P.G. Publication activity: growth opportunities due to the activity of authors. Universitetskaya kniga. 2013. No. 9, pp. 80–86. (In Rassian).
7. Roberts G.G. SET for Success: the supply of people with science, technology, engineering and mathematic skills: The report of Sir Gareth Roberts’ Review / G.G. Roberts. London: HM Treasury, 2002. – URL: http://webarchive.nationalarchives. gov.uk/+/http:/www.hm-treasury.gov.uk/d/robertsreview_ introch1.pdf. – Date of access: 01.06.2016

I.V. ZHERNOVSKY, Candidate of Sciences (Geology and Mineralogy), N.I. KOZHUKHOVA, Candidate of Sciences (Engineering), A.V. CHEREVATOVA, Doctor of Sciences (Engineering), I.Sh. RAKHIMBAEV, Candidate of Sciences (Engineering), I.V. ZHERNOVSKAYA, research engineer

Belgorod State Technological University named after V.G. Shukhov (46, Kostyukova Street, 308012, Belgorod, Russian Federation) New Data about Nano-Sized Phase Formation in Binding System «Gypsum — Lime» The possibility of the appearance of a new mineral species such as sulfo-calcium carbonate – rapidcreekite Ca2(SO4)CO3∙4H2O in products of the phase formation is considered on the example of the binding system – a gypsum-lime binder. On the basis of quite high values of anisotropic profile parameters of rapidcreekite, a quite small size of crystallites of this phase in the direction normal for crystals growth has been established (001). This makes it possible to consider the mineral formations of rapidcreekite as 1D nano-particles with certan palliatively.

Keywords: gypsum-lime binder, rapidcreekite.

References
1. Betekhtin A.G. Mineralogia [Mineralogy]. Мoscow: Gosudarstvennoe izdanie geologicheskoy literaturyi. 1950. 956 pp.
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3. Walenta K., Dunn P.J. Camgasit, ein neues Calcium- Magnesiumarsenatmineral der Zusammensetzung CaMg(AsO4)(OH)·5H2O von Wittichen im mittleren Schwarwald. Aufschluss. 1989. No. 40, pp. 369–372.
4. Onac B.P., Effenberger H.S., Wynn J.G., Povara I. Rapidcreekite in the sulfuric acid weathering environment of Diana Cave, Romania. American Mineralogist. 2013. No. 98, pp. 1302–1309.
5. Martínez-Ramírez S., Fernández-Carrasco L. Carbonation of ternary cement systems. Construction and Building Materials. 2012. No. 27, pp. 313–318.
6. Cooper M.A., Hawthorne F.C. The crystal structure of rapidcreekite, Ca2(SO4)(CO3)(H2O)4, and its relation to the structure of gypsum. The Canadian Mineralogist. 1996. No. 34, pp. 99–106.
7. Solovyov L.A. Full-profile refinement by derivative difference minimization. Journal of Applied Crystallography. 2004. No. 37, pp. 743–749.
8. Fisher H.-B., Rikhert H., Bur’yanov A.F., Lesovik V.S., Strokova V.V. Recrystallization of gypsum particles. Modern construction materials, technologies and designs: the collection of materials of the International scientific and practical conference devoted to FGBOU VPO’S 95 anniversary of «GGNTU of the academician M.D. Millionshchikov». Grozny. 2015, pp. 248–253. (In Russian).
9. Bur’yanov A.F., Fisher H.-B., Yakovlev G.I. Prospects of modification of structure and properties of plaster materials by carbon nanostructures. International scientific correspondence conference «Education in XXI a Century». Tver`. 2013, pp. 125–129. (In Russian).
10. Gordina A.F., Polyanskikh I.S., Tokarev Yu.V., Bur’yanov A.F., Sen’kov S.A. Waterproof Gypsum Materials Modified by Cement, Microsilica, and Nanostructures. Stroitel’nye Materialy [Construction Materials]. 2014. No. 6, pp. 35–37. (In Russian).
11. Chernysheva N.V., Ageeva M.S., El’yan Issa Zhamal Issa, Drebezgova M.Yu. Influence of mineral additives of various genesis on a microstructure of a gipsotsementny stone. Vestnik Belgorodskogo gosudarstvennogo tekhnologicheskogo universiteta im. V.G. Shukhova. 2013. No. 4, pp. 12–18. (In Russian).
12. Strokova V.V., Nelyubova V.V., Altynnik N.I., Zhernovskiy I.V., Osadchiy E.G. Phase Formation in Cement-Lime-Silica System under Hydrothermal Conditions with the Use of a Nanostructured Modifier. Stroitel’nye Materialy [Construction Materials]. 2013. No. 9, pp. 30–33. (in Russian).
13. Strokova V.V., Sumin A.V., Nelyubova V.V., Shapovalov N.A. Modified knitting with use of the nanostructured mineral component. Vestnik Belgorodskogo gosudarstvennogo tekhnologicheskogo universiteta im. V.G. Shukhova. 2015. No. 3, pp. 36–39. (In Russian).

V.В. PETROPAVLOVSKAYA1, Candidate of Sciences (Engineering), T.B. NOVICHENKOVA1, Candidate of Sciences (Engineering); A.F. BUR’YANOV2, Doctor of Sciences (Engineering); K.S. PETROPAVLOVSKIY1, Engineer, M. YU. ZAVAD’KO1, student
1 Tver State Technical University (22, Afanasiy Nikitin Еmbankment, Tver, 170026, Russian Federation)
2 National Research Moscow State University of Civil Engineering (26, Yaroslavskoe Highway, Moscow, 129337, Russian Federation)

Production of Gypsum Composites Modified by Waste of Basalt Manufacturing Data on the studies of modification of gypsum composites are presented. Introduction of the waste of basalt fiber manufacturing to the composition of gypsum binder makes it possible to improve the composite structure and its strength characteristics. It is established on the basis of study results that the properties of gypsum composites modified by high-disperse particles of the basalt dust depend both on the granulometric composition of the mixture and water-gypsum ratio.

Keywords: basalt fiber, basalt dust, gypsum.

References
1. Belov V.V., Bur`yanov A.F., Yakovlev G.I. etc. Мodifikatsiya struktury i svoistv stroitel’nykh kompozitov na osnove sul’fata kal’tsiya [Modification of structure and properties of construction composites on the basis of calcium sulfate]. Moscow: De Nova. 2012. 196 p. (In Russian).
2. Bondarenko D.O., Strokova V.V., Rykunov A.M., Nelyubova V.V. To a question of efficiency of slags as component of composite knitting. Modern construction materials, technologies and designs: materials of the International scientific and practical conference devoted to FGBOU VPO’S 95 anniversary of GGNTU of the academician M.D. Millionshchikov. 2015, pp. 134–139. (In Russian).
3. Tokarev Yu.V., Ginchitskiy E.O., Yakovlev G.I., Bur’yanov A.F. Efficiency of modification plaster knitting carbon nanotubes and additives of various dispersion. Stroitel’nye Materialy [Construction Materials]. 2015. No. 6, pp. 84–87. (In Russian).
4. Rakhimov R.Z., Khaliullin M.I., Gayfullin A.R. Composite Gypsum Binders with the Use of Claudite Dust and Blast- Furnace Slags. Stroitel’nye Materialy [Construction Materials]. 2012. No. 7, pp. 13–15. (In Russian).
5. Hezhev H.A., Pukharenko Yu.V. Gipsum concrete the composites reinforced by basalt fibers. Vestnik grazhdanskikh inzhenerov. 2013. No. 2, pp. 152–156. (In Russian).
6. Mognonov D.M., Ayurova O.Zh., Il`inaO.V., Shestakov N.I., Mangutov A.N., Buyantuev S.L., Bituev A.V. Improvement of strength properties of the asphalt concrete with basalt fibers. Stroitel’nye Materialy [Construction Materials]. 2012. No. 10, pp. 28–30. (In Russian).
7. Babayev V.B., Strokova V.V., Nelyubova V.V. Basalt fiber as a component for microreinforcing of cement composites. Vestnik Belgorodskogo gosudarstvennogo universiteta imeni V.G. Shukhova. 2012. No. 4. pp. 58–61. (In Russian).

G.I. YAKOVLEV, Doctor of Sciences (Engineering) (gyakov@istu.ru), T.A. PLEKHANOVA, Candidate of Sciences (Engineering), E.V. ALIEV, Candidate of Sciences (Engineering) Kalashnikov Izhevsk State Technical University (7, Studencheskaya Street, Izhevsk, 426069, Russian Federation) Magnesia Concrete Modified with a Poly-functional Additive on the Basis of Calcium Sulfate

The influence of a poly-functional additive on the basis of sulfates of calcium and iron (carphosiderate) as a modifier for manufacturing magnesia concretes with a filler of metallurgical slag is considered. This concrete has improved physical-mechanical properties that are confirmed by methods of physical-chemical studies. The effect of the polyfunctional additive on the change in the mineralogical composition of the concrete obtained and on the formation of its micro-structure is established. The developed composition of modified magnesia concrete has a compressive strength value of 110 MPa. The softening coefficient of modified magnesia concrete is 0.92 that makes it possible to use it as structural material operating under wet conditions.

Keywords: caustic magnesite, calcium sulfate, polyfunctional additive, carphosiderate, metallurgical slag.

References
1. Kaminskas A.Yu. Technology of construction materials based on magnesium raw materials. Vilnius: Mokslas.1987. 341 p.
2. Zvezdina Ye.V., Treskova N.V. Increasing water-resistance of heat-insulating products based on caustic dolomite. Science. Construction. Education. Internet journal. 2011. No. 1. (http://www.nso-journal.ru/public/journals/ 1/issues/2011/01/13.pdf) (In Russian).
3. Smirnov B.I., Solovyeva Ye.S., Segalova Ye.Ye. Studying chemical interaction of magnesia with the solutions of magnesuim chloride of various concentration. Russian Journal of Applied Chemistry. 1967. Iss. 3, pp. 505–515. (In Russian).
4. Tretyakova N.S., Kuznetsova T.V. Influence of the solvent concentration on the properties of composition magnesuim binders. Construction materials and products: Interacademic collected scientific papers. Magnitogorsk: MSTU. 2002, pp. 52–54. (In Russian).
5. Yakovlev G. I., Kerien J., pokauskas A., Plechanova T.A. Utilization of the waste of “Norilsk nickel” by using it for the filling mixtures production // The 6th International conference “Envirnmental Engineering”, Selected papers. Vilnius Gediminas Technical University Press “Technika”. 2005, pp. 98–102.
6. Yakovlev G.I, Keriene J., Plekhanova T.A. Curing of wood and magnesium compositions modified with fluoride anhydrite. Tekhnika i tekhnologiya silikatov. 2004. Vol. 11. No. 3–4, pp. 11–16. (In Russian).
7. Yakowlew G.I., Plekhanowa T.A., Makarowa I.S., Spokauskas A. Modifizirte magnesiabinder. In 16. Internationale Baustoffung “Ibausil”. Weimar. 2006. Tagungsbericht-Band 1, pp. 1-1039-1-1045. (In Germany).
8. Mikheev V.N. Rentgenometricheskiy opredelitel’ mineralov [X-ray identifier of minerals]. Moscow: State theoretical technological publishing house. 1959. 870 p.
9. Gorshkov V.S., Timshaev Z.V., Savelyev V.G. Metody fiziko-khimicheskogo analiza vyazhushchikh veshchestv [Methods of physical and chemical analysis of binders]. Moscow: Vysshaya shkola. 1981. 197 p.
10. Ustinova Yu.V., Nasonova A.Ye., Nikiforova T.P., Kozlov V.V. Studying interaction of caustic magnesite and additive of microsilica. Vestnik MGSU. 2012. No. 3, pp. 100–104. (In Russian).
11. Atlas infrakrasnykh spektrov [Atlas of infrared spectra]. Edited by V.V. Pechkovskiy. Moscow: Nauka. 1981. 248 p.
12. Brew D.M.R., Glasser F.P. Synthesis and characterisation of magnesium silicate hydrate gels. Cement and concrete research. 2005. Vol. 35, pp. 85–98.
13. Plekhanova Т.А., Lopatkin I.G., Kerien J., Yakovlev G.I. Carbonization processes in wood-magnesia composites. The 8th International Conference “Modern building materials, structures and techniques. Selected papers”. Vilnius Gediminas Technical University Press “Technika”. 2004, pp. 136–139.

L.I. RYABOKON, Candidate of Sciences (Engineering), S.V. BEDNYAGIN, Engineer, I.K. DOMYANSKAYA, Candidate of Sciences (Engineering) (doman-1@yandex.ru) Ural Federal University named after the First President of Russia B.N. Eltsin (17, Mira Street, 620002, Ekaterinburg, Russian Federation)

Gypsum-Lime-Slag Binders and Concretes on their Basis: an Experimental Assessment of Durability The history of creation of a gypsum-lime-slag binder as well as the industrial experience in production and application of wall products and structures on its basis is described. The results of on-site investigations of 10 buildings constructed of gypsum-lime-slag concretes in Sverdlovsk Oblast from 1960 up to 1980 that confirms the high weathering stability and durability of the artificial stone on the basis of this type of gypsum binders are presented. The strength of gypsum-lime-slag concretes after the half-century operation in the form of wall structures exceeds two times the handling strength and is 11–13 MPa.

Keywords: gypsum binder, concretes, gypsum-lime-slag binder, wall blocks, durability

References
1. Shtark I., Vikht B. Dolgovechnost’ betona [Durability of concrete]. Kiev: Oranta. 2004. 295 p.
2. Tang S.W., Yao Y., Andrade C., Li Z.J. Recent durability studies on concrete structure. Cement and Concrete Research. 2015. Vol. 78. Part A, pp. 143–154.
3. Glassera F.P., Marchanda Ja., Samsonc E. Durability of concrete – Degradation phenomena involving detrimental chemical reactions. Cement and Concrete Research. 2008. Vol. 38, pp. 226–246.
4. Yankovskiy L.V. Durability of Cement Concretes in the Light of Transition of European Standards. Stroitel’nye Materialy [Construction Materials]. 2012. No. 1, pp. 16– 18. (In Russian).
5. Hornbostela K., Larsena C.K., Geikera M.R. Relationship between concrete resistivity and corrosion rate – A literature review. Cement and Concrete Composites. 2013. Vol. 39, pp. 60–72.
6. Rapoport P.B., Rapoport N.V., Polyanskiy V.G., Sokolova E.R., Garibov R.B., Kochetkov A.V., Yankovskiy L.V. Analysis of service life of modern cement concrete. Sovremennye problemy nauki i obrazovaniya. 2012. No. 4. http://www.science-education.ru/ru/ article/view?id=6559 (date of access 11.07.2016). (In Russian).
7. Huntzingera D.N., Eatmonb T.D. A life-cycle assessment of Portland cement manufacturing: comparing the traditional process with alternative technologies. Journal of Cleaner Production. 2009. Vol. 17, pp. 668–675.
8. Juengera M.C.G., Winnefeldb F., Provisc J.L., Idekerd J.H. Advances in alternative cementitious binders. Cement and Concrete Research. 2011. Vol. 41, pp. 1232– 1243.
9. Zhang Z., Provis J., Reid A., Wang H. Geopolimer foam concrete: An emerging material for sustainable construction. Construction and Building Materials. 2014. Vol. 56, pp. 113–127.
10. Sun H., Jain R., Nguyen K., Zuckerman J. Sialite technology – sustainable alternative to portland cement. Clean Technologies and Environmental Policy. 2010. Vol. 12, pp. 503–516.
11. Riechert C., Scharfe F., Fischer H.-B. Zur Eignung von Gips-Zement-Puzzolan-Bindemitteln für Putzanwendungen. Ibausil: Tagungsband. Weimar. 2012, pp. 0432–0441.
12. Budnikov P.P. Gips, ego issledovanie u primenenie [Gypsum, its study and application]. Moscow-Leningrad: Stroyizdat narkomstroya. 1943. 378 p.
13. Antipin A.A. Plaster construction details for high-speed construction. Opyt stroyki. 1939. No. 4, p. 43. (In Russian).
14. Volzhenskiy A.V. Production of limy and plaster mixes and increase of their water proofness. Promyshlennost’ stroitel’nykh materialov. 1940. No. 10, pp. 10–11. (In Russian).
15. Alksnis F.F. Tverdenie i destruktsiya gipsotsementnykh kompozitsionnykh materialov [Curing and destruction plaster and cement composite materials]. Leningrad: Stroyizdat. 1988. 103 p.

S.V. ANISIMOVA, Candidate of Sciences (Chemistry), A.E. KORSHUNOV, Engineer (korshynov@gmail.com), D.N. EMELIANOV, Doctor of Sciences (Chemistry) Lobachevsky State University of Nizhni Novgorod (23 Gagarin Avenue, 603950, Nizhny Novgorod, Russian Federation)

Properties of Gypsum Suspensions in the Presence of Water Soluble Acrylic Polymers In the course of the study of the rheological state of gypsum suspensions when evaluating the change in the dynamic viscosity in time, it is revealed that water soluble polymers and copolymers of the acrylic acid in quantity from 0.005% show active properties in relation to building gypsum at the stage of its mixing with water and effect on the processes of setting and hardening. On the basis of results of the X-ray analysis and determination of physical-mechanical properties of hardened samples, it is shown that the use of water soluble acrylic polymers insignificantly influences on the character of the formed crystalline phase and the strength of gypsum casts.

Keywords: gypsum, polymers of acrylic acid, suspensions, rheology, setting.

References
1. Belov V.V., Bur`yanov A.F., Yakovlev G.I. etc. Мodifikatsiya struktury i svoistv stroitel’nykh kompozitov na osnove sul’fata kal’tsiya [Modification of structure and properties of construction composites on the basis of calcium sulfate]. Moscow: De Nova. 2012. 196 p.
2. De Korte A.C.J., Brouwers H.J.H. Ultrasonic sound speed analysis of hydrating calcium sulphate emihydrates. Journal of Materials Science. 2011. Vol. 46. No. 22, pp. 7228–7239.
3. Ustinova Yu.V., Sivkov S.P., Barinova O.P., Sanzharovskiy A.Yu. Influence of various additives on morphology of crystals of two-water plaster. Vestnik MGSU. 2012. No. 4, pp. 140–144. (In Russian).
4. Panferova A.Yu., Garkavi M.S. Modification of Gypsum Systems with Small Additions of Polymers. Stroitel’nye Materialy [Construction Materials]. 2011. No. 6, pp. 8–9. (In Russian).
5. Ustinova Yu.V. Influence of polymeric additives on crystallization of two-water sulfate of calcium. Stroitel’stvo: nauka i obrazovanie. 2013. No. 2, pp. 3. (In Russian).
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8. Kamalova Z.A., Rakhimov R.Z., Ermilova E.Yu., Stoyanov O.V. Supersofteners in manufacturing techniques of composite concrete. Vestnik Kazanskogo tekhnologicheskogo universiteta. 2013. Vol. 16. No. 8, pp. 148–152. (In Russian).
9. Shvetsov O.K., Durosova E.Yu., Komin A.V. Colloidal and chemical properties of solutions polymeric karboksilatnykh of surface-active substances. Theses of reports of the III scientific and technical conference “Polymeric Composite Materials and Coverings”. Yaroslavl’. 2008, pp. 323–326. (In Russian).
10. Kholmberg K., Iensson B., Kronberg B., Lindman B. Poverkhnostno-aktivnye veshchestva i polimery v vodnykh rastvorakh [Surface-active substances and polymers in water solutions]. Moscow: BINOM. Laboratoriya znany. 2007. 528 p.
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12. Sivtsov E.V., Chernikova E.V., Terpugova P.S., Yasnogorodskaya O.G. Influence of a microstructure of copolymers of acrylic acid and the N-butilakrilata received by method of pseudo-live radical polymerization on the mechanism of reversible transfer of a chain on their superficial activity in water solutions. Zhurnal prikladnoy khimii. 2009. Vol. 82. No. 4, pp. 630–638. (In Russian).
13. Khozin V.G., Abdrakhmanova L.A., Nizamov R.K. Common Concentration Pattern of Effects of Construction Materials Nanomodification. Stroitel’nye Materialy [Construction Materials]. 2015. No. 2, pp. 25–33. (In Russian).
14. Ustinova Yu.V. Influence of polymeric additives on crystallization of two-water sulfate of calcium. Stroitel’stvo: nauka i obrazovanie. 2013. No. 2, pp. 3. http://www.nsojournal. ru/public/journals/1/issues/2013/02/3.pdf. (date of access 11.07.16). (In Russian).
15. Khaliullin, M.I., Altykis M.G., Rakhimov R.Z. etc. Influence of the plasticizing additives on properties of dry mixes on the basis of angidritovy knitting. Izvestiya KGASA. 2003. No. 1, pp. 54–57. (In Russian).

An extensive range of Knauf Primer allows you to choose the composition to perform finishing works both indoors and out, for each type of base material and subsequently . Thanks to the innovative formulation primer Knauf provide reliable adhesion with the coating surface being treated and , consequently, make it possible to achieve the highest quality finishes.

According to statistics in recent years, dry mixes based on gypsum steadily gaining more market share . This trend has plaster and self-leveling floors . Even now, in this difficult for the construction industry , when there is a general decline in production, gypsum floor fillers remain popular and relevant material

N.A. GALTSEVA, Engineer (nady_19@mail.ru), A.F. BURIANOV, Doctor of Sciences (Engineering) (rga-service@mail.ru) National Research Moscow State University of Civil Engineering (26, Yaroslavskoye Hwy, 129337, Moscow, Russian Federation)

Stowing Mixtures on the Basis of Synthetic Anhydrite from Industrial Waste Results of the study for the preparation of compositions of stowing mixtures of ASC (anhydrite-slag-cement) with maximal reducing the proportion of furnace slag and cement suitable for stowing of a worked-out space of mines are presented. Optimal compositions of the stowing mixtures on the basis of the modified anhydrite binder with Portland cement in the amount of 2.5–5% and potassium sulfate in the amount of 0.5–2% of raw material mass grinded until the specific surface of 4500 sm2/g have been determined; they meet all the requirements for stowing mixtures concerning their technological and physical-mechanical properties. The study results obtained show the possibility and perspectivity of using the modified synthetic potassium sulfate in compositions of stowing mixtures.

Keywords: synthetic anhydrite, stowing mixture, additives, industrial waste.

References
1. Fedorchuk Yu.M. Tekhnogennyi angidrit, ego svoistva, primenenie [Technogenic anhydrite, its properties, application]. Tomsk: TGTU. 2003. 108 p.
2. Garkavi M.S., Garkavi S.Z., Dolzhenkov A.N., Makarova O.A. Anhydrite Floors for Civil Construction. In 14. Internationale Baustofftagung “Ibausil”. Tagungsbericht- Band 2. Weimar. 2000, pp. 0865–0870.
3. Naftal’ M.N., Ilyukhin I.V., Shestakova R.D., Kozlov A.N. Technogenic anhydrite, its properties, application. Tsvetnye metally. 2009. No. 8, pp. 41–47. (In Russian).
4. Gal’tseva N.A., Bur’yanov A.F., Buldyzhova E.N., Solov’ev V.G. The Use of Synthetic Calcium Sulfate Anhydrite for Production of Filling Mixtures. Stroitel’nye Materialy [Construction Materials]. 2015. No. 6, pp. 76–77. (In Russian).
5. Gal’tseva N.A., Bur’yanov A.F., Buldyzhova E.N. Research of properties and prospect of the application knitting on the basis of synthetic anhydrite. Nauchnoe obozrenie. 2015. No. 22, pp. 157–161. (In Russian).
6. Patent RF 2445267. Sposob polucheniya sul’fata kal’tsiya [Way of receiving sulfate of calcium]. Grinevich A.V., Kiselev A.A., Bur’yanov A.F., Kuznetsov E.M., Moshkova V.G. Declared 23.07.2010. Published 20.03.2012. Bulletin No. 8. (In Russian).
7. Grinevich A.V., Kiselev A.A., Bur’yanov A.F., Kuznetsov E.M. Production of Synthetic Anhydrite Calcium Sulfate from Concentrated Sulfuric Acid and Flour Limestone. Stroitel’nye Materialy [Construction Materials]. 2013. No. 11, pp. 16–19. (In Russian).
8. Buldyzhova E.N., Gal’tseva N.A., Bur’yanov A.F. Modification of structure the anhydrous and the plaster knitting substances. Collection of works XVI of the International scientific and practical conference «Construction — Formation of the Environment of Activity». Moscow: MGSU. 2013, pp. 468–470. (In Russian).

L.M. KOLCHEDANTSEV1, Doctor of Sciences (Engineering), O.G. STUPAKOVA1, Engineer (olgan_70@mail.ru); R.R. MUSTAFIN2, Candidate of Sciences
1 St. Petersburg State University of Architecture and Civil Engineering (4 2nd Krasnoarmeiskaya Street, 190005, St. Petersburg, Russian Federation)
2 ZAO «SU-326» (P.O.B. 30, 34 Finliandskaya Street, Kolpino, 196650, St. Petersburg, Russian Federation)

Joint Effect of High Temperatures and Superplasticizers on Placeability of Concrete Mixes Prospects of the electric pre-heating of concrete mixes are shown. One of the disadvantages that hinders the wide spreading of this method is the rapid loss of mobility of the heated concrete mix. The results of experimental studies that prove the possibility to increase the ability to maintain the mobility of concrete mix within the technologically required time interval are presented.

Keywords: electric pre-heating, superplasticizer, heated concrete mix, mobility.

References
1. Molodin V. V., Usinsk E.K. Zimny concreting of building constructions of residential and civil buildings in monolithic execution. Izvestiya vysshikh uchebnykh zavedenii. Stroitel’stvo. 2007. No. 6 (582), pp. 51–60. (In Russian).
2. Kolchedantsev L.M., Stupakova O.G., Mustafin R.R. Use of the warmed concrete mixes for increase of durability of a joint of combined and monolithic buildings. Stroitel’nye Materialy [Construction materials]. 2012. No. 4, pp. 17–19. (In Russian).
3. Fedosov S.V., Ibragimov A.M., Redkina A.S., Nesterov S.A. Control of the thermal processes happening in a body of a monolithic reinforced concrete design at winter concreting. Stroitel’nye Materialy [Construction materials]. 2010. No. 3, pp. 40–43. (In Russian).
4. Popov Yu.A., Molodin V. V., Lunev YU.V., Sukhanov A.S. The energy saving and sparing technology of winter concreting of building constructions. Izvestiya vysshikh uchebnykh zavedenii. Stroitel’stvo. 2012. No. 2, pp. 122. (In Russian).
5. Tolkynbayev T.A., Golovnev S.G., Torpishchev Sh.K. An additive for winter concreting of monolithic constructions. Vestnik Yuzhno-Ural’skogo gosudarstvennogo universiteta. Seriya: Stroitel’stvo i arkhitektura. 2013. T. 13. No. 2, pp. 34–37. (In Russian).
6. Minakov Yu.A., Kononova O.V., Anisimov S.N., Gryazina M.V. Management of kinetics of curing of concrete at negative temperatures. Fundamental’nye issledovaniya. 2013. No. 4–2, pp. 307–311. (In Russian).
7. Mustafin R.R. Use of the warmed mixes at a zamonolichivaniye of joints of combined and monolithic buildings and concreting of designs in a fixed timbering. Cand. Dis. (Engineering). Saint Petersburg. 2013, pp. 72–81. (In Russian).

V.S. SEMENOV, Candidate of Sciences (Engineering), T.A. ROZOVSKAYA, Candidate of Sciences (Engineering) (tamara.roz@yandex.ru), A.Yu. GUBSKIY, Engineer, R.R. GAREEVA, Engineer National Research Moscow State University of Civil Engineering (26, Yaroslavskoe Highway, Moscow, 129337, Russian Federation)

Effective Disperse Reinforcement Dry Masonry Mix The article is devoted to the development of dry mixes with hollow ceramic microspheres and reinforcing fibers for the efficient light-weight masonry mortars with improved properties. Previously developed by the authors dry mixes with ceramic microspheres and light-weight masonry mortars based on them have a low average density, low thermal conductivity, high compressive strength, high specific strength, but insufficient crack resistance, frost resistance and durability of the mortar. One way of improvement of the properties of such mortars is the introduction of dispersed reinforcing fibers into their structure. In this study, the following types of fibers were used: basalt ones, glass ones, and two types of polymer fibers – polyacrylic and polypropylene ones. The research has been carried out according to standard methods. The basic properties of mortar mixtures and mortar have been determined; the dependences of the influence of consumption of various fiber types on the basic properties of mortars have been established, primarily, on the average density, compressive strength and tensile bending. The optimum composition of the dry masonry mixes with the hollow ceramic microspheres and the fiber were obtained, the results of microstructural analysis of samples are given. The dry masonry mix with hollow ceramic microspheres and polypropylene fibers having the compressive strength value of 14.5 MPa, the tensile strength in bending of 3.4 MPa and the average density of the dry mortar not more than 800 kg/m3 was developed.

Keywords: dry mixes, light-weight masonry mortar, reinforced mortar, hollow ceramic microspheres, reinforcing fibers.

References
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13. Klochkov A.V., Pavlenko N.V., Strokova V.V., Belentsov Yu.A. On the question about the use of glass hollow microspheres for thermal-structural masonry mortars. Vestnik Belgorodskogo gosudarstvennogo tekhnologicheskogo universiteta im. V.G. Shukhova. 2012. No. 3, pp. 64–66. (In Russian).
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15. Danilin L.D., Drozhzhin V.S., Kuvaev M.D., Kulikov S.A., Maksimova N.V., Malinov V.I., Pikulin I.V., Redyushev S.A., Khovrin A.N. Hollow microspheres of fly ash – a multifunctional filler for composite materials. Tsement i ego primenenie. 2012. No. 4, pp. 100–105. (In Russian).
16. Zhukov A.D., Bessonov I.V., Sapelin A.N., Naumova N.V. Increasing energy efficiency of wall materials with the help of cenospheres. Vestnik MGSU. 2014. No. 7, pp. 93–100. (In Russian).
17. Gubskiy A.Yu., Volchenko K.S. Investigation of the properties lightweight mortars with aluminosilicate microspheres. Construction is formation of the activity environment: proceedings of XVII International interuniversity scientific-and-practical conference of students, undergraduates, postgraduate students and young scientists. Moscow: MGSU. 2014, pp. 925–930. (In Russian).
18. Semenov V.S., Rozovskaya T.A. Properties of modified dry masonry mixtures for effective masonry units. IOP Conference Series: Materials Science and Engineering. 71 (2015) 012042.
19. Derevyanko V.N., Salamakha L.V., Smogliy A.G., Shchudro E.S., Timchenko Ya. The influence of the low modulus fibers on the properties of mortars. Vіsnik Pridnіprovs’koi derzhavnoi akademіi budіvnitstva ta arkhіtekturi. 2011. No. 10 (163), pp. 8–11. (In Russian).
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22. Luiz A. Pereira-de-Oliveira, João P. Castro-Gomes, Miguel C.S. Nepomuceno. Effect of acrylic fibres geometry on physical, mechanical and durability properties of cement mortars. Construction and Building Materials. 2012. Vol. 27. Iss. 1, pp. 189–196.
23. Talantova K.V., Mikheev N.M. Research of influence of the properties of steel fibers on the performance of steel reinforced concrete structures. Polzunovskiy vestnik. 2011. No. 1, pp. 194–199. (In Russian).
24. Orlov A.A., Chernykh T.N., Sashina A.V., Bogusevich D.V. Research of influence of basalt fiber parameters on the properties of fiber-reinforced. Prospective materials in construction and technique: proceedings of the conference. 2014, pp. 115–121. (In Russian).
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I.M. TERESHCHENKO, Candidate of Sciences (Engineering) (terechtchenko@belstu.by), B.P. ZHIKH, Master of Sciences (Engineering) (zhih.bp1992@gmail.com), A.P. KRAVCHUK, Candidate of Sciences (Engineering) Belarusian State Technological University (13a, Sverdlova Street, Minsk, 220006, Belarus)

Production of Efficient Heat-Insulating Materials on the Basis of Silica Gel The resource and energy saving process of producing the heat-insulating material “Siver” on the basis of waste of fluorides production, silica gel, has been developed. The production technology includes main stages: mechanoactivation of silica gel, components mixing, synthesis of sodium polysilicates, crushing and classification, foaming. The central element of the developed technological process is the stage of hydrothermal synthesis of poly-silicates based on suspensions of silica gel and NaOH, which is carried out in four stages: reaction of depolymerization of silica, coagulation, dispersion and poly-condensation. A particularly important point, providing the final product with a density of less than 150 kg/m3, is the separation in time of the first two stages. The obtained granulated foamed material “Siver” has a complx of properties similar to the traditional foam glass, by the price/quality ratio it surpasses known analogs at the market of building materials of inorganic origin and is comparable to the foam plastics. A significant advantage of the material is its wide range of applications that is provided by the possibility to obtain a fine-grained and narrow fractional product, for example, fractions of 0.5–2 mm, which is urgently demanded at the market.

Keywords: foam glass, heat-insulating material, silica gel, sodium poly-silicates.

References
1. Kuleznev V.N. Shershnev V.A. Fizika i himiнa polimerov [The physics and chemistry of polymers]. Moscow: KolosS. 2007. 367 p.
2. Matthew R. Hall Materials for energy efficiency and thermal comfort in buildings. Woodhead Publishing Limited New York. 2010. 734 p.
3. Demidovich B.K. Penosteklo [Foamglass]. Minsk: Nauka i tehnika. 1975. 248 p.
4. Patent RF WO2008143549 A1. Stroitel’nyj material i sposob ego poluchenija [Building material and method for its preparation]. Gomenjuk V.M., Lavrenin D.V., Merkin N.A., Pisarev B.V. Declared 13.05.2008. Published 27.11.2008. (In Russian).
5. Patent RF 2188180. Sposob izgotovlenija teploizoljacionnogo materiala [A method of manufacturing a heatinsulating material]. Furman R.Ja., Furman V.V. Declared 10.08.1999. Published 27.02.2002. (In Russian).
6. Patent RF 2124475. Sposob poluchenija polisilikatov natrija (varianty) [The process for producing sodium polysilicates (variants)] Pesternikov G.N., Maksjutin A.S., Puchkov S.P., Obuhova V.B. Declared 05.06.1997. Published 10.01.1999. (In Russian).
7. Patent RF 2170213. Sposob poluchenija polisilikatov kalija [The method for producing potassium polysilicates] Shabanova N.A., Gorohov S.N. Declared 09.11.2000. Published 10.07.2001. (In Russian).
8. Melkonjan R.G. Complex processing of amorphous rocks on the glass raw material “Canazei” and a number of silicate products. EPNI «Vestnik Mezhdunarodnoi akademii nauk. Russkaya sektsiya» (Electronic resource). 2013. No. 1, pp. 49–54. (Date of access 14.03.2016 http:// www.heraldrsias.ru/online/2013/1/271/). (In Russian).

E.G. LUKIN1, Engineer, D.V. RYGAEV1, Engineer, T.V. METELITSA1, Engineer; S.M. NEYMAN2, Candidate of Sciences (Engineering), L.V. SOBOLEV3, Engineer
1 OOO «NPO «Chemical Technologies» (112, bldg 1, structure 3, Volokolamscoe Hwy, 125371, Moscow, Russian Federation)
2 Chrysotile Association (35, Usacheva Street, 119048, Moscow, Russian Federation)
3 OOO «PARTNER-HOLDING» (6, 2nd Zavodskaya Street, Voskresensk, 140200, Moscow Oblast, Russian Federation)

Silicate Paint for Chrysotile Cement Products Made of Domestic Raw Materials Chrysotile (asbestos-cement, slate) products have more than a century history. To provide today priorities in Russia with this durable, stable in different media and maximally cheap materials it is necessary to improve their esthetic properties. For this purpose, our enterprises have to use reliable and cheap domestic paints. Under laboratory conditions the silicate paint of OOO “NPO “Chemical Technologies” manufactured on the basis of the liquid potassium glass of own production and from domestic raw materials has been tested on the surface of chrysotile-cement samples. The coating stable in water and when tested for frost resistance has been obtained.

Keywords: chrysotile cement, slate, liquid potassium glass, silicate paint

References
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2. Lobkovskiy V.P., Averkina A.I., Sobolev L.V., Kalinin Yu.N. The painted slate — roofing material with new opportunities. Stroitel’nye Materialy [Construction Materials]. 1997. No. 12, pp. 20–21. (In Russian).
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9. Patent RF 2538830. Sposob i ustroistvo dlya polucheniya vysokomodul’nogo zhidkogo stekla, kak svyazuyushchego tsinksilikatnykh sostavov [Way and the device for receiving high-modular liquid glass, as binding the tsinksilikatnykh of structures]. Lukin E.G. Declared 22.03.2013. Published 10.01.2015. Bulletin No. 1. (In Russian).

A.I. ESHCHENKO1, Candidate of Sciences (Engineering), B.G. PECHENY1, Doctor of Sciences (Engineering) (bpavtor@yandex.ru), V.L. KURBATOV1, Doctor of Sciences (Economics), B.S. ASELDEROV1, Engineer; A. HYMAN2, Candidate of Sciences (Chemistry)
1 North-Caucasian Branch of Belgorod State Technological University named after V.G. Shukhov (24, Zheleznodorozhnaya Street, Mineralnye Vody, 357202, Russian Federation)
2 Corporation «CORASFALTOS» (843761 Km.2. Via al Refugio Sede Uis Cuatiguara Piedecuesta-Santander. Bucaramanga, Colombia)

Thermoplastics for Asphalt and Cement Concrete Roads Marking The service life of thermoplastic road marking materials is very limited. This affects the highway traffic safety and capacity of road ways, with cement concrete pavement especially. Higher crack resistance rates of thermoplastics containing the gap composition of aggregates were established. Surfactants, added into the thermoplastic, provide increased crack resistance indicators of coatings applied to the concrete surface. Dilatometer characteristics and crack resistance research gave an opportunity to develop colored thermoplastic compositions for road marking. These compositions have much higher characteristics (technological, physical, mechanical and durability) than the known thermoplastics, including foreign ones.

Keywords: road markings, thermoplastics, compositions, properties.

References
1. Kostova M.Z., Yumashev V.M. Marking of roads in Russia. Information on roads. Highways and bridges. Moscow: Federal State Unitary Enterprise «Information Center on the roads». 2005. Iss. 4. 26 р. (In Russian).
2. AASHTO: M 249-12. Standard Specificacion for White and Yellow Reflective Thermoplastic String Material (Solid Form). STANDARD by American Association of State and Highway Transportation Officials, 2012.
3. Norma Tecnica Colombiana NTC 5867. Materiales Para De-marcacio’n De Pavimentos Termoplastico Retroreflectivo. Blanco y Amarillo (forma solida). (In Spain).
4. Metodicheskie rekomendatsii po naneseniyu dorozhnoy razmetki na tsementobetonnye pokrytiya [Guidelines on the roads marking applying to cement concrete pavement]. Moscow: Rosavtodor. 2004. 12 р.
5. Danil’yan E.A., Aselderov B.Sh., Pecheny B.G. Optimization of quality of asphalt concrete with discontinuous granulometry of fillers. Stroitel’nye Materialy [Construction Materials]. 2012. No. 1, pp. 54–57. (In Russian).
6. Shakurov M.I., Harisov I.I., Garipov R.I. Study of aggregates affect on the properties of the thermoplastic road marking. Trudy Kazanskogo tekhnologicheskogo universiteta. 2010. No. 9, pp. 385–389.
7. Vozny S.I., Yevteyeva S.M., Kochetkov B.V., Talalay A.V. Use of aggregates in road marking on polymer-based materials. Plasticheskie massy. 2014. No. 5–6, pp. 37–40. (In Russian).
8. Ivanova I.S., Grigorieva A.I. Aggregate gradation influence on the road marking thermoplastic fluidity. Dostizheniya vuzovskoy nauki. 2015. No. 19, pp. 131–136. (In Russian).
9. Pecheny B.G. Methods for evaluation of crack resistance. Avtomobilnye dorogi. 2015. No. 6, pp. 70–73. (In Russian).

L.Yu. MATVEEVA1, Doctor of Sciences (Engineering) (lar.ma211@yandex.ru), A.G. SINAYSKIY1 Candidate of Sciences, E.E. ANDREEVA1, Engineer, A.V. RUMYANTSEVA2, Engineer; P.B. KUKSA2, Candidate of Sciences (Engineering)
1 Institute of Synthetic Rubber (1, Gapsalskaya Stret, 198035, Saint-Petersburg, Russian Federation)
2 Saint-Petersburg State University of Architecture and Civil Engineering (4, 2nd Krasnoarmeiskaya Street, 190005, Saint-Petersburg, Russian Federation) Damping Waterproofing Material of “Hydrofor” Series on the Basis of Polyisocyanateurethane Compositions and main characteristics of promising materials on the basis of elastomeric polyurethanes for waterproofing and arrangement of damping seams and coverings in construction have been developed and determined. Polyisocyanateurethane sealants of “Hydrofor” series represent the compositions of a polyurethane elastomer with chemically grafted isocyanate functional groups, which ensure the good adhesion to concrete and steel, with various fillers. Thanks to the combination of adhesion, strength, and damping properties, these materials are recommended for using in vibration-resistant structures.

Keywords: polyurethanes, polyisocyanateurethane, properties of sealants, adhesion, water absorption

References
1. Mikheev V.V. Neizotsianatnye poliuretany [Non- Isocyanate polyurethanes.]. Kazan: KNITU (KGTU). 2011. 292 p.
2. Ovchinnikov I.G., Makarov V.N., Ovsyannikov S.V. Antikorrozionnaya zashchita mostovykh sooruzhenii [Corrosion protection of bridge structures]. Saratov: «Nauka». 2007. 192 p.
3. Bolton U. Konstruktsionnye materialy: metally, splavy, polimery, keramika, kompozity. Karmannyi spravochnik [Structural materials: metals, alloys, polymers, ceramics and composites. Pocket Guide]. Moscow: «Dodeka- XXI», 2004. 315 p.
4. Rait P., Kamming A. Poliuretanovye elastomery / Per. s angl. pod red. N.P. Apukhtinoi [Polyurethane elastomers / Trans. from English. ed. N.P. Apukhtina]. Leningrad- Moscow: Khimiya. 1973. 304 p.
5. Lipatov Yu.S., Kercha Yu.Yu., Sergeeva L.M. Struktura i svoistva poliuretanov [The structure and properties of polyurethanes]. Kiev: Naukova dumka. 1970. 280 p.
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8. Bock M., et al. Globalisierung der Fahrzeugindustrie – eine Herausforderung bei der Lackrohstoffentwicklung. Farbe und Lack, 1996. Vol. 102 (9), pp. 132–140.
9. Bock M., Meiss H.U. Meier-Westhues. Globalisierung aus Sicht eines Lackrohstoffproduzenten. DFO-Automobiltagung. September 1998. Weimar, Berichtsband.
10. The polyurethanes book. Ed. by Randall D., Lee S. Wiley. 2003. 477р.

A.A. KRYLOV1, Engineer; T.N. VAKHNINA2, Candidate of Sciences (Engineering) (t_vachnina@mail.ru)
1 OJSC Kostroma Ship Mechanical Plant (45 Beregovaya Street, 156002, Kostroma, Russian Federation)
2 Kostroma State Technological University (17 Dzerzhinskogo Street, 156005, Kostroma, Russian Federation)

Development of a Wood-Polymeric Composite of Construction Appointment with Addition of Secondary Polyethyleneterephthalate The issue of development of composite wood-polymeric slabby materials of construction appointment with addition of household waste of polymeric container is considered. On the basis of experimental studies, technological recommendations for production of a composite from wood component, crushed waste of polyethyleneterephthalate and a polymeric binder are substantiated.

Keywords: wood shavings, binder, polyethyleneterephthalate, pressing, strength, swelling, mathematic model

References
1. Vahnina T.N. Formation of properties of wood slabby materials for use in construction designs. Zhilischnoe stroitelstvo [Housing construction], 2009, No. 6. pp. 10–12. (In Russian).
2. Titunin A. A., Vahnina T.N., Karavaykov V. M. Problems of use of wood materials in construction. Zhilischnoe stroitelstvo [Housing construction]. 2009. No. 7, pp. 10– 12. (In Russian).
3. Govariker R.V., Visvanatkhan N.V., Shridkhar Dzh. Polymeryi [Polymers]. Moscow.: Nauka, 1990. 396 p. (In Russian).
4. La Mantia F., Vtorichnaya pererabotka plastmass [Secondary processing of plastic]. St. Petersburg.: Professiya, 2006. 400 p. (In Russian).
5. Berlin A.A., Wolfson S.A., Enikolopov N.S. Printsipyi sozdaniya polimernyih compozitionnyih materialov [Principles of creation of polymeric composite materials]. Moscow.: Chimiya, 1993. 240 p. (In Russian).
6. Marrel Dzh., Ketl S., Tedder Dzh. Himicheskaya svyaz [Chemical bond]. Moscow.: Mir, 1980. 384 p. (In Russian).
7. Kyznetchov V.P., Baumgarten M. I., Nevzorov B.P., Fadeyev of Yu.A. Adgeziya in composite materials: terms and physical essence. Vestnik Kemerovskogo gosudarstvennogo universiteta. 2014. No. 2, pp. 173–177. (In Russian).

V.E. TSVETKOV, Doctor of Sciences (Engineering) (natali-26.05@mail.ru), A.S. PAS’KO, Engineer, A.A. TESOVSKY, Engineer, O.P. MACHNEVA, Candidate of Sciences (Engineering), Yu.A. SEMOCHKIN, Candidate of Sciences (Engineering) Moscow State Forest University (1, 1st Institutskaya street, 141005, Mytischi, Moscow region)

Peculiarities of Producing Decorative Paper-Laminated Plastics on the Basis of Melamine-Formaldehyde Resins The article considers the issues of producing decorative paper-laminated plastics on the basis of melamine-formaldehyde impregnating resins of SP-200, SP-300 brands, which are synthesized in the laboratory with different proportions of the catalyst. The technological stages of receiving melamine-formaldehyde impregnating resins and decorative paper-laminated plastics based on their basis are presented. Properties of the decorative paper-layered plastics derived from seventeen layers of impregnated Kraft paper and two outer layers of decorative paper-resin film have been experimentally evaluated. The analysis of results obtained shows that decorative paper-laminated plastics on the basis of melamine-formaldehyde resins have improved physical and mechanical properties, their manufacture is cost-effective and safer for the environment. Characteristics of the plastic produced correspond to normative and technical requirements; at present, the work on the serial development of this product is carried out.

Keywords: decorative paper-laminated plastic, melamine-formaldehyde resin, catalyst, modification, production technology.

References
1. Barash L.I. Sloistye plastiki, dekorativnye poverkhnosti [Laminates, decorative surfaces]. SPb.: Khimizdat, 2007. 256 p. (In Russian).
2. Barash L.I. Sovremennoe proizvodstvo dekorativnykh sloistykh plastikov [Modern production of decorative laminated plastics]. SPb.: Khimizdat, 2004. 200 p. (In Russian).
3. Ishchenko T. L., Lublinskaya O. V., Pokhilenko V. M. Study of the wettability of the surface of the decorative laminate. Aktual’nye napravleniya nauchnykh issledovanii XXI veka: teoriya i praktika. 2014. Vol. 2. No. 2-1. pp. 136–142. (In Russian).
4. Plotkin L.G. Tekhnologiya i oborudovanie propitki bumagi polimerami [Technology and equipment for impregnation of paper with polymers]. M.: Lesnaya promyshlennost’, 1975. 144 p. (In Russian).
5. Azarov V.I., Tsvetkov V.E. Tekhnologiya svyazuyushchikh i polimernykh materialov [Technology binders and polymeric materials]. M.: Lesnaya promyshlennost’. 1985. 216 p. (In Russian).
6. Plotkin L.G., Shalun G.B. Dekorativnye bumazhnosloistye plastiki [Decorative laminates]. M.: Lesnaya promyshlennost’, 1978. 328 p. (In Russian).
7. Tsvetkov V.E., Pas’ko Yu.V., Kremnev K.V., Machneva O.P. Polimery v proizvodstve drevesnykh materialov [Polymers in the production of wood-based materials]. M.: MGUL, 2007. 55 p. (In Russian).

S.A. UGRYUMOV, Doctor of Sciences (Engineering) (ugr-s@yandex.ru), A.V. OSETROV, Engineer Kostroma State Technological University (17, Dzerzhinskogo Street, 156005, Kostroma, Russian Federation)

Wood Chipboards on the Basis of Modified Phenol-Formaldehyde Binders Thermodynamic properties of adhesive compounds on the basis of phenol-formaldehyde resin modified with the furfural-acetone monomer FA at the stage of mixing of the components have been determined. Physical-mechanical properties of wood chipboards on the basis of the modified adhesive compound and technological features of production are presented. It is established that the best physical-mechanical properties of wood chipboards are achieved with the introduction of 2–4 weight fractions of furfural-acetone monomer FA into the phenolformaldehyde resin with significant increase in strength, reduction in swelling, water absorption and the mass loss of plates during combustion. Physical-mechanical characteristics of wood boards on the basis of modified phenol-formaldehyde resin meet the requirements of GOST 10632–2014 “Wood Chipboards. Technical Specifications”; these boards surpass analogues on the basis of phenol-formaldehyde resins. At low expenditures for modification of the adhesive compound and insignificant changes in the technological process, the competitiveness of these boards improves.

Keywords: wood chipboard, physical and mechanical properties, phenol formaldehyde resin, furfural-acetone monomer FA, modification.

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