Accelerating agents for accelerating hardening of cement

Details Accelerating agents for accelerating hardening of cement Accelerating agents for accelerating hardening of cement

1979-06-26

1981-03-24

Poer, James

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

106 97, 405267, C04B 702

Patent

active

042578140

ABSTRACT:
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.

REFERENCES:
patent: 3759044 (1973-09-01), Caron et al.
patent: 3799787 (1974-03-01), Davis
patent: 3801338 (1974-04-01), Whitaker
patent: 3973978 (1976-08-01), Nakagawa et al.
patent: 4045236 (1977-08-01), Bianchi
patent: 4059963 (1977-11-01), Wayment

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