Method for controlling contraction in setting cementitious syste

Details Method for controlling contraction in setting cementitious syste Method for controlling contraction in setting cementitious syste

1983-10-12

1987-03-31

Dixon, Jr., William R.

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

106 90, 106 86, 106315, 106 88, C04B 700, C04B 900, C04B 702

Patent

active

046540849

ABSTRACT:
The contractions of aqueous hydraulic cement mixtures in the plastic state is controlled by the addition of a gas generating agent capable of generating gas in the mixture without the addition of activators or other agents, and which does not generate disagreeable or noxious ammonia fumes. The gas generation may be controlled over an extended period of time so that even slow setting cementitious mixtures may have their shrinkage or contraction inhibited while in the plastic state during setting or hardening without the generation of ammonia fumes.

REFERENCES:
patent: 3287145 (1966-11-01), Fischer
patent: 3663287 (1972-05-01), Mizunuma et al.
patent: 3776746 (1973-12-01), Abe
patent: 4131578 (1978-12-01), Crinkelmeyer et al.
patent: 4209335 (1980-06-01), Katayama et al.
patent: 4333764 (1982-06-01), Richardson

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