Plastic and nonmetallic article shaping or treating: processes – Pore forming in situ – Composite article making
Patent
1974-09-11
1977-03-01
Anderson, Philip
Plastic and nonmetallic article shaping or treating: processes
Pore forming in situ
Composite article making
5230912, 52609, 264333, 264DIG57, 428310, B29D 2704
Patent
active
040102327
ABSTRACT:
A construction panel and a method of making the same wherein a layer of concrete is bound to a layer of urethane or polyurethane through a blanket of dry cement mixture and the in situ setting into a mold of a wet cement mixture and an unset foaming plastic composition. The latter includes urethane or polyurethane, a catalyst, and a blowing agent, the dry cement mixture includes white cement, silica, a coloring agent, and an aggregate, and the concrete is formed from the same dry cement mixture with water.
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patent: 3013996 (1961-12-01), Pollard et al.
patent: 3270113 (1966-08-01), Longinotti
patent: 3419454 (1968-12-01), Hoffman
patent: 3439076 (1969-04-01), Loois
patent: 3555131 (1971-12-01), Weismann
patent: 3629384 (1971-12-01), Elgenstierna
Bender; Rene J., "Handbook of Foamed Plastics", Libertyville, Ill., Lake Publishing Corp., c. 1965, pp. 125-141.
"Design and Control of Concrete Mixtures" Eighth Edition, Chicago, Ill. Portland Cement Association, [N 1945].
Lea; F. M. "The Chemistry of Cement and Concrete" Third Edition, Glasgow, Scotland, Edward Arnold, c. 1970, pp. 531-532.
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