Calcium sulphate anhydrite mortar

Details Calcium sulphate anhydrite mortar Calcium sulphate anhydrite mortar

1974-09-13

1976-05-04

Douglas, Winston A.

Compositions: coating or plastic

Coating or plastic compositions

Proteinaceous material containing

423555, C04B 1100, C01F 1146

Patent

active

039544923

ABSTRACT:
Particulate anhydrite, of whose particles from about 2 to 6% by weight have a particle size greater than about 5 mm, from about 13 to 23% by weight have a particle size of from about 5 to 3.15 mm, from about 33 to 40% by weight have a particle size of from about 3.15 to 1 mm, from about 17 to 23% by weight have a particle size of from about 1 to 0.2 mm, and from about 17 to 33% by weight have a particle size less than about 0.2 mm, will provide a mortar developing high early strength without requiring an excessive amount of water. If the particles having a size less than about 0.2 mm are activatingly ground to increase their energy content to above the minimum possible under ambient pressure and temperature conditions, a particularly speedy initial rise in strength takes place.

REFERENCES:
patent: 3650689 (1972-03-01), Cafferata
patent: 3872204 (1975-03-01), Yano et al.

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