FIELD: chemistry.
SUBSTANCE: invention relates to the industry of construction materials and can be used for making sulphur concrete. The composition for making sulphur concrete contains quartz sand, 70% of which is ground, and a composition prepared at 140°C, containing elementary sulphur and a sulphur modifier - polyorganic polysulphide with unsaturated carbon-carbon bonds in an organic radical, which corresponds to the formula 
or 
with the following ratio of components, wt %: quartz sand - 71.2, elementary sulphur - 26.21 to 28.66, sulphur modifier - 0.14 to 2.59.
EFFECT: increased compression strength of concrete with retention of water absorption and hardening time.
1 tbl
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