Fine-grained concrete for repair and restoration based on complex modifiers
DOI:
https://doi.org/10.54355/tbus/3.2.2023.0038Keywords:
microsilica, concrete, repair, restoration, composition, defects, damageAbstract
Nowadays ensuring normal operation of buildings made of monolithic reinforced concrete is of great relevance. Bearing building structures in the process of operation or erection can have defects and damages of various origins. There is a need to develop repair compositions to ensure the durability and reliability of monolithic reinforced concrete buildings. In this paper we have conducted research and developed a repair composition of fine-grained concrete (FGC) on the basis of modification and improvement of its structure. In the composition of complex modifier on the basis of analysis were chosen: microsilica MCU-95 as a highly active pozzolanic mineral admixture; superplasticizer C-3, hydrophobizing component – soapstock. Cements of Novo-Karaganda, Ust-Kamenogorsk, Shymkent cement plants M400 were chosen as binders. In order to study the influence of modifiers on the setting time of cement dough and concrete structure, several concrete compositions were developed. The performance of the developed FGC was improved in terms of basic physical and mechanical parameters. Cement consumption was reduced by 15% (from 450 kg to 382.5 kg). The influence of the main factors and dependence of performance indicators on physical and mechanical properties of cement stone and the studied FGC has been established. Production waste and local construction materials were used to save binder.
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Assessment of technical condition of bearing monolithic beams of the building «Tauelsizdik Saraiy» / A.K. Kozhas, B. Ayapbergenova, S. Kalacheva, M. Beketova // University’s Works. — 2019. — Vol. 74, No. 1. — P. 94–99.
Innovative methods of monitoring defects and damages of building structures and laboratory tests / A.D. Mekhtiyev, A.K. Kozhas, Ye. Neshina, R. Kiknadze, A.T. Mukhamejanova // University’s Works. — 2020. — Vol. 80, No. 3. — P. 96–101. https://doi.org/10.52209/1609-1825_2020_3_88
Monitoring reinforced concrete building structure technical conditions based on the use of quasi-distributed fiber-optic sensors / A. Mekhtiyev // International Journal of GEOMATE. — 2022. — Vol. 23, No. 97. https://doi.org/10.21660/2022.97.3392 DOI: https://doi.org/10.21660/2022.97.3392
Ways to improve the quality of monolithic reinforced concrete structures / A. Khuzin, A. Sharavina // IOP Conference Series: Materials Science and Engineering. — 2020. — Vol. 890, No. 1. — P. 012127. https://doi.org/10.1088/1757-899X/890/1/012127 DOI: https://doi.org/10.1088/1757-899X/890/1/012127
The bond between geopolymer repair mortars and OPC concrete substrate: Strength and microscopic interactions / Y.-S. Wang, K.-D. Peng, Y. Alrefaei, J.-G. Dai // Cement and Concrete Composites. — 2021. — Vol. 119. — P. 103991. https://doi.org/10.1016/j.cemconcomp.2021.103991 DOI: https://doi.org/10.1016/j.cemconcomp.2021.103991
Studying Specific Features of the Monolithic Construction Technology Based on Systemic Analysis / D. Topchiy, A. Bolotova // IOP Conference Series: Materials Science and Engineering. — 2019. — Vol. 603, No. 5. — P. 052004. https://doi.org/10.1088/1757-899X/603/5/052004 DOI: https://doi.org/10.1088/1757-899X/603/5/052004
Repair cost estimation techniques for reinforced concrete structures located at the seashore: Considering various probabilistic service life functions and actual mix proportions / K.-H. Yang, H.-S. Lim, S.-J. Kwon, J.-H. Kim // Construction and Building Materials. — 2020. — Vol. 256. — P. 119469. https://doi.org/10.1016/j.conbuildmat.2020.119469 DOI: https://doi.org/10.1016/j.conbuildmat.2020.119469
Modification of fine-grained polymer concrete with microsilica / V. Balabanov, K. Putsenko // MATEC Web of Conferences. — 2018. — Vol. 212. — P. 01010. https://doi.org/10.1051/matecconf/201821201010 DOI: https://doi.org/10.1051/matecconf/201821201010
Optimum recycled concrete aggregate and micro-silica content in self-compacting concrete: Rheological, mechanical and microstructural properties / N. Bahrami, M. Zohrabi, S.A. Mahmoudy, M. Akbari // Journal of Building Engineering. — 2020. — Vol. 31. — P. 101361. https://doi.org/10.1016/j.jobe.2020.101361 DOI: https://doi.org/10.1016/j.jobe.2020.101361
GOST 310.1-76 Cements. Test methods. General — 1976.
GOST 310.4-86 Cements. Methods of bending and compression strength determination — 1986.
GOST 10178-85 Portland cement and portland blastfurnace slag cement. Specifications — 2021.
GOST 23732-2011 Water for concrete and mortars. Specifications — 2011.
GOST 8735-88 Sand for construction work. Testing methods — 1988.
GOST 10268-80 Aggregates for concrete. Technical requirements — 1980.
High-strength concrete based on superplasticizers / Y.M. Bazhenov, S.T. Babayev, A.I. Gruz, N.N. Dolgopolov, G.S. Ivanov // Construction Materials. — Vol. 18, No. 9. — P. 12.
Monolithic concrete / Y.G. Khayutin. — Moscow: Stroyizdat, 1981. — 447 p.
ТS-18 UaSSR 38-79 Cottonseed oil soapstock — 1979.
Uplyu tiosiarcranu socluna process hydratacyi alita / E. Lielinska // Cement wapho Cripl. — 1999. — Vol. 10. — P. 314–317. DOI: https://doi.org/10.1080/07407709908571308
Aktivirovannoe tverdenie cementov / Svatovskaya, M.M. Sychev. — L: Stroyizdat, 1983. — 150 p.
Elementy nanotehnologii v proizvodstve betonov na osnove mineralnyh vyazhushih veshestv. Part 1 / Y.D. Chistov // Stroitelnye materialy, oborudovanie, tehnologii XXI veka. — 2007. — Vol. 6. — P. 14–16.
Formirovanie struktury betonov s modificirovannymi dobavkami / A.A. Kulibayev, V.I. Solovyov, K.A. Nurbaturov, I.M. De // Vestnik of NIISTROMPROJECT. — 2009. — P. 3–5.
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