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ACCELERATING EQUIPMENT TO ACCELERATE THE CURING OF CEMENT AND METHODS AND MATERIALS FOR FILLING CAVITY IN UNDERGROUND CONSTRUCTION
ACCELERATING EQUIPMENT TO ACCELERATE THE CURING OF CEMENT AND METHODS AND MATERIALS FOR FILLING CAVITY IN UNDERGROUND CONSTRUCTION
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机译:加速设备,加快地下建筑施工中水泥的浇注方法和材料
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摘要
An agent for accelerating hardening of cement for use in an underground mining installation employing concrete-like packs including run-of-mine coal. The agent comprises by weight one and a half parts triethanolamine, five parts sodium carbonate and one part potassium carbonate. Too rapid setting of quick setting cement is avoided by the agent because a slurry of cement in water is mixed with a slurry of agent and run-of-mine coal in bentonite in a mixer immediately before being added to a pack so that setting cement does not occur in pipes leading to the mixer.
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