TECHNOLOGY OF MODIFIED CONCRETE BASED ON SECONDARY AGGREGATES OBTAINED FROM SCRAP CONCRETE
Keywords:
specified parameters, technological techniques, plasticizing effectAbstract
The technology of modified concrete consists in the introduction of chemical additives (plasticizers, accelerators / retarders of hardening) and mineral fillers (silica, ash) to improve the properties of the mixture. This increases the strength (up to 80-150 MPa), water resistance, frost resistance and durability of structures, optimizing the structure of cement stone.
Main components and technologies Modifiers: Chemical additives that change the properties of the concrete mix. They include superplasticizers (to increase workability and reduce water consumption), setting accelerators or retarders, as well as complex additives.
References
1. Shatov A.N. High-strength concretes. Available methods of chemical modification / Technologies of concrete No. 9-10, 2012. pp.9-11. http://www.tehnobeton.ru/pdf/2012-9-10/9-11.pdf
2. Yukhnevsky P.I. The influence of the chemical nature of additives on the properties of concrete / P.I. Yukhnevsky. Minsk: BNTU Publ., 2013. 310 p. https://rep.bntu.by/bitstream/handle/data/6475 /Vliyanie_himicheskoj_prirody_dobavok_na_svojstva_betonov.pdf?sequence=3&isAllowed=y
3. Bakhtash K.N. Investigation of the possibility of improving the quality of concrete by introducing modifying additives / K.N. Bakhtash, U.K. Abdrakhmanov. — Text: direct // Young scientist. — 2020. — № 22 (312). — Pp. 91-94. — URL: https://moluch.ru/archive/312/70713/ Yakovleva K.S., Mashtakova K.V., Mokhonko Ya.Yu.
4. Modern additives in concrete for modern construction / Scientific Almanac No. 10-3 (12), 2015. pp. 293-296. http://ucom.ru/doc/na.2015.10.03.293.pdf Botsman L.N., Strokova V.V., Ishchenko A.V., Botsman A.N. Modification of concrete by introducing various types of additives / Bulletin of BSTU named after V.G. Shukhov No. 6, 2016. pp. 90-94.
