Method and apparatus for the manufacture of concrete and like products
AssigneeU.S. Terrazzo Panels, Inc.
InventorJohn A. Murray
Life of this patent
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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.
Claims19
A method of rapidly manufacturing concrete or like products having an advanced state of cure, comprising the steps of blending together of calcareous cementitious binder, aggregate, vinyl acetate-dibutyl maleate copolymer and water in effective quantities, depositing the starting mix into a mold cavity having inner surface portions that are substantially non-metallic, delivering carbon dioxide gas to the mold cavity in sufficient amounts to create a substantial essentially complete carbon dioxide environment in the cavity, molding the mixture to have a predetermined shape determined by the cavity configuration by compressing the carbon dioxide gas and the mixture in the mold cavity under the pressure exerted upon compacting the mix by bringing a press and mold together to seal the gas with the mix before the mix undergoes a temperature rise of about 20.degree. F., and continuing the pressure in the mold cavity until there is a further exothermic temperature rise in the shape and until the shape has reached a self-sustaining configuration in an advanced state of cure, and removing the shape from the mold.
A method of rapidly manufacturing concrete or like products having an advanced state of cure comprising the steps of blending together a calcareous cementitious binder, an aggregate, vinyl acetate-dibutyl maleate copolymer and water to form a mix, depositing the starting mix into a mold cavity having inner surfaces that are substantially non-metallic, delivering carbon dioxide gas to the mold cavity in sufficient amounts to create a carbon dioxide environment in the cavity, molding the mixture to a predetermined shape determined by the cavity configuration, whereby the temperature of the mix rises, sealing the gas within the mix before the mix undergoes a temperature rise of about 20.degree. F., continuing the pressure in the mold cavity until there is a further exothermic temperature rise in the shape and until the shape has reached a self-sustaining configuration in an advanced state of cure, and removing the shape from the mold.
Dependencies are inferred from the claim text.