Plastic and nonmetallic article shaping or treating: processes – Reactive gas or vapor treatment of work
Patent
1976-10-26
1978-06-06
Pavelko, Thomas P.
Plastic and nonmetallic article shaping or treating: processes
Reactive gas or vapor treatment of work
264 83, 264162, 264DIG43, C04B 1514
Patent
active
040936902
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 mixture is initially compressed into the desired configuration. This compressed shaped article is then subjected to an accelerated curing process in a chamber that is charged with carbon dioxide gas to provide a hardened product in an accelerated cure state having excellent physical properties, although the apparatus may be used, if desired, to provide only a desired amount of curing, as the circumstances may dictate. The method and apparatus of this invention is especially useful in the manufacture of panels, such as of terrazzo and terrazzo-like types and building panel elements of both load-bearing and non load-bearing types, concrete blocks, ceramic products, cinder blocks, bricks, adobe constructions, concrete pipe, drainage tile, silo block or staves, pre-cast tile, filler base, load bearing structures, non-load bearing or curtain wall structures, and pre-stressed products, among others.
REFERENCES:
patent: 3305506 (1967-02-01), Murray
patent: 3468993 (1969-09-01), Bierlich
patent: 3492385 (1970-01-01), Simunic
Pavelko Thomas P.
U.S. Terrazzo Panels, Inc.
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