FIELD: chemistry.
SUBSTANCE: invention relates to compositions of putty for levelling surfaces of concrete articles. The putty contains the following in wt %: portland cement 28.0-32.0, water 20.0-22.0, calcium hydrosilicate 0.1-0.15, quartz sand ground to specific surface area of 4500-5000 cm2/g 45.4-51.3, neutralised air-entraining resin SNV 0.1-0.15, superplasticiser S-3 0.3-0.5.
EFFECT: high strength of adhesion with concrete surface.
1 tbl
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