FIELD: chemistry.
SUBSTANCE: invention relates to making porous aggregate for concrete. The mixture for making porous aggregate contains the following, wt %: montmorillonite clay 69.0-79.0; coal 5.0-6.0; ground dolomite 15.0-20.0; calcined soda 1.0-5.0.
EFFECT: increased strength of the of the porous aggregate made from the mixture.
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