Properties of Сement Сomposition with Addition of Crushed Clay Brick and Microsilica

The study focuses on the issues related to the use of crushed brick as a feedstock for producing construction materials. Crushed brick-based compositions with addition of microsilica have been investigated. Methods of DSC analysis, X-ray phase analysis and IR spectroscopy has shown that complex additive which includes brick dust and microsilica enters into reac- tion with the calcium hydroxide forming during hydration of Portland cement. This results in formation increase the strength of the compositions under study. The analysis of microstructure with the use of the electronic focused-beam microscope has demonstrated that contributes to more homogeneous compact structure, adding of microsilica with crushed clay brick into the investigated slag-alkaline composition is accompanied by formation of additional low-basic calcium hydrosilicates

K.A. KISLYAKOV, master,
G.I. YAKOVLEV, Doctor of Sciences (Engineering),
G.N. PERVUSHIN, Doctor of Sciences (Engineering)

Kalashnikov Izhevsk State Technical University (7, Studencheskaya Street, Izhevsk, 426069, Russian Federation)

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