Process of continuous manufacture of light-weight foamed concrete
AssigneesShowa Denko K.K., Misawa Homes Institute of Research and Development
InventorsAkihiro Hashimoto, Shigeo Hayashi, Sadao Yamamoto, Hitoshi Chujo
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Abstract
Light-weight foamed concrete articles are advantageously manufactured in a continuous manner from a rapid setting hydraulic cement composition. The cement composition in the form of a dry powder and an aqueous foamed liquid containing a foaming agent and a setting retarder are separately and continuously introduced into a continuously stirred vessel where they are mixed into an aqueous foamed cement slurry within a short period of time. The foamed cement slurry is cast into the desired shape and, if desired, cured.
Claims8
A process for manufacturing light-weight foamed concrete articles which comprises the steps of:
- separately introducing two materials in a continuous manner at stated flow rates into a continuously stirred vessel, one of the two materials being a rapid setting hydraulic cement composition in the form of a finely divided dry powder and the other being an aqueous foamed liquid containing a foaming agent and a setting retarder;
- continuously withdrawing the foamed cement slurry, so prepared, from the vessel before the foamed cement slurry begins to set, and;
- then,
- placing the foamed slurry in a mold thereby to be cast therein.
Dependencies are inferred from the claim text.