| 摘要 |
FIELD: chemistry.SUBSTANCE: inventions relate to light cementing compositions for making panels and methods for production thereof. The composition for making a cement slab contains a suspension which contains the following, wt %: cementing reactive powder containing portland cement 35-60, expanded and chemically coated waterproof and hydrophobic pearlite filler 2-10, water 20-40, secondary filler 0-25; entrapped air 10-50 vol. % and an optional additive selected from at least one substance from a group consisting of plasticising agents, chemical setting catalysts and chemical setting inhibitors, the suspension having temperature of at least about 40°F (4.4°C), while mixing components to form a composition. In the method of producing said composition, a mixture is formed from said components in conditions which provide initial temperature of the suspension of at least about 40°F (4.4°C). The inventions are developed in subclaims.EFFECT: high strength, adhesiveness, high hydrophobicity, moisture resistance, stability of dimensions, resistance to bacteria, moulds, fungi, frost resistance, incombustibility of the obtained panels.10 cl, 20 tbl |
