FIELD: construction.
SUBSTANCE: invention relates to production porous aggregates for concrete. Mixture for making porous filler contains, wt%: montmorillonite clay 94.5-96.0, ground to specific surface area of 2,000-2,500 cm2/g coal 0.5-1.0, not expanded pearlite sand 3.0-4.0, halite 0.3-0.5.
EFFECT: technical result is improvement of porous filler obtained from mixture.
1 cl, 1 tbl
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