Usova N.T., Lotov V.A., Lukashevich O.D.
NADEZHDA T. USOVA, PhD, A/Professor,
VASILII A. LOTOV, DSc, Professor,
Tomsk Polytechnic University,
30, Lenin Ave., 634050, Tomsk, Russia
OL'GA D. LUKASHEVICH, DSc, Professor,
Tomsk State University of Architecture and Building,
2, Solyanaya Sq., 634003, Tomsk, Russia
NON-AUTOCLAVED WATERPROOF COMPOSITES BASED ON SAND, LIQUID GLASS COMPOSITIONS, AND SEWAGE SLUDGE
The paper suggests a synthesis of a new cementing agent based on a liquid glass and dry СаО or Са(ОН)2 with formation of low-basic calcium–silicate–hydrate and tough silica gel which possesses high cementing qualities along with calcium–silicate–hydrate. A possibility of using the synthesized cementing agent in manufacturing waterproof and sound sand-based building materials with incorporating therein pigmenting material, namely iron oxide pigment obtained from sewage sludge is described herein. The flow sheet suggested for making these products has a number of practical advantages as compared to the calcium silicate brick technology.
Key words: liquid glass; СаО and Са(ОН)2; waterproof liquid glass composites; calcium–silicate–hydrate; silica gel.
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