Process for manufacturing concrete articles of improved initial

Details Process for manufacturing concrete articles of improved initial Process for manufacturing concrete articles of improved initial

1976-04-19

1978-07-25

Pavelko, Thomas P.

Plastic and nonmetallic article shaping or treating: processes

Reactive gas or vapor treatment of work

106104, 264333, 264DIG43, C04B 1512

Patent

active

041029623

ABSTRACT:
A process for manufacturing concrete articles of improved initial strength and long-term strength from a hydraulic cement composition capable of forming predominantly tobermorite group crystalline calcium silicate hydrate is provided. The hydraulic cement composition, having incorporated therein specified amounts of alumina cement and calcium hydroxide and/or oxide, is initially set in a mold and after the concrete so formed is allowed to stand at a temperature of not higher than approximately 40.degree. C for a period of 2 hours to 5 days, the concrete is finally cured at an elevated temperature and pressure.

REFERENCES:
patent: 744431 (1903-11-01), Sutcliffe
patent: 904923 (1908-11-01), Berglund
patent: 3510326 (1970-05-01), Miki
patent: 3664854 (1972-05-01), Kokuta

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