| 摘要 |
FIELD: building materials production. SUBSTANCE: binder comprises, mas. %; portland cement, 95.5-98.7; ferrum (III) sulfate, 0.3-1.5; calcium oxide, 1-3. Strength of binder affected by heat treatment and humid treatment is increased by 1.6 times, strength of binder affected normal hardening being increased by 17.3 %. EFFECT: improved quality of desired product.
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