Method and apparatus for the manufacture of concrete and like pr

Plastic article or earthenware shaping or treating: apparatus – With control means responsive to independently operated timer – For timing period mold is closed or period molding pressure...

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425412, 425437, 425815, 425DIG44, B28B 736

Patent

active

042669219

ABSTRACT:
A method and apparatus is provided for the manufacture of products of concrete or like construction, in which a mixture of calcareous cementitious binder substance, such as cement, an aggregate, a vinyl acetate-dibutyl maleate copolymer, and an amount of water sufficient to make a relatively dry mix is compressed into the desired configuration in a mold, and with the mixture being exposed to carbon dioxide gas in the mold, prior to the compression taking place, such that the carbon dioxide gas reacts with the ingredients to provide a hardened product in an accelerated state of cure having excellent physical properties.

REFERENCES:
patent: 3203069 (1965-08-01), Wogulis
patent: 3242242 (1966-03-01), Bournique
patent: 3594462 (1971-07-01), Vrigma
patent: 3838001 (1974-09-01), Greiner
patent: 3839521 (1974-10-01), Robinson

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