Investigation of Cement Compositions Modification with Organosilicon Compounds

[摘要] The authors conducted the research to identify a mechanism for polyphenylsiloxane inclusion into a cement composition and proposed an easier way to introduce an organosilicon modifier into cement clinker. In particular, the authors found out that polyphenylsiloxane reacts with portland clinker minerals during mechanochemical activation. The interreaction products were identified and studied. The authors synthesized the polymetallorganosiloxane compounds similar to the products obtained due to the reaction between polyphenylsiloxane and cement clinker at mechanochemical activation. It was demonstrated that polyphenylsiloxane reacting with calcium oxide and calcium carbonate results in polycalciumphenylsiloxane obtaining. Further, the article presents the comparative study of the physical and chemical and resistance characteristics of the cement compositions modified with polyphenylsiloxane and polycalciumphenylsiloxane. It was demonstrated that polycalciumphenylsiloxane improves cement composition freeze resistance as well as bending and compression resistance better than polyphenylsiloxane.

[发布机构] School of Natural Science, Far Eastern Federal University, Sukhanova, 8, Vladivostok; 690950, Russia^1;Far Eastern Research, Design and Technology Institute of Construction, Borodinskaya Str., 14, Vladivostok; 690033, Russia^2

[学科分类] 土木及结构工程学

[关键词] Cement compositions;Comparative studies;Compression resistance;Mechano-chemical activation;Organosilicon compounds;Organosilicones;Portland clinkers;Resistance characteristics