Clay-cement mortars and to the product made with said mortars

Details Clay-cement mortars and to the product made with said mortars Clay-cement mortars and to the product made with said mortars

1979-10-23

1982-01-05

Kight, III, John

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 294UA, 260 296PS, 106 76, 106 90, 106 94, C08L 6120, C08L 6128, C04B 702, C04B 3130

Patent

active

043093256

ABSTRACT:
The invention provides a clay/cement mortar which sets without cracking to a product having good mechanical properties, the mortar containing cement, clay in an amount by weight greater than that of the cement, gauging water, and an additive chosen from urea-formaldehyde and melamine-formaldehyde resins and derivatives of ammonia such as formamide, the dry weight of additive being between 1 and 20% of the total dry weight of the clay and cement. The clay is preferably basic or rendered so by addition of silicates or sodium aluminates, and absorbed water is preferably removed therefrom before mixing with the cement by adding a flocculant or water repellent. Adjuvants which may be incorporated in the mortar include paraffin, aluminium powder, glass and the like, and acrylic, A.B.S. and the like polymer emulsions. The mortar, after being formed to desired shape, is preferably kept for several hours in an atmosphere saturated with water vapor before being dried slowly to cause setting with curing of the additive.

REFERENCES:
patent: 2990382 (1961-06-01), Wagner et al.
patent: 3663287 (1972-05-01), Mizunuma et al.
patent: 3788869 (1974-01-01), Batdorf et al.
patent: 3824107 (1974-07-01), Weiant
patent: 3847632 (1974-11-01), Blengsli
patent: 4046583 (1977-09-01), Collepardi
patent: 4128258 (1980-08-01), Rothberg
patent: 4172056 (1979-10-01), Marra
Chem. Absts., vol. 74:115421h, "Colored Mortar-Concrete-Melamine Resins", Aignesberger et al.
Belgian-856,767 Abstract-(Jan. 13, 1978), Soc. Metallurg Breta, "Clay Cement Mortar-Resins-Products.
Chem. Absts., vol. 85:98519d, "-Concrete-Mortars-with Improved Properties"-Institut Francais.
Chem. Abst., vol. 66:40515r, "Hydraulic Cement Mortar", Esso Research and Eng. Co.
Chem. Absts. vol. 83:120203d, "Cement Additive", Inoue.
Chem. Absts., vol. 81:67830m, Bleeding-Cement-Clays, Bruere.

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