METHOD FOR MANUFACTURING CONCRETE TUBE

PROBLEM TO BE SOLVED: To provide a method for manufacturing a concrete tube having high productivity even without using a centrifugal molding machine or a vibrating pressure molding machine and without bringing about insufficient packing. SOLUTION: The method for manufacturing the concrete tube comp...

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Bibliographische Detailangaben
Hauptverfasser:	NAGAOKA SEIICHI, KOBAYASHI TETSUO
Format:	Patent
Sprache:	eng
Schlagworte:	ARTIFICIAL STONE CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE LIME, MAGNESIA METALLURGY PERFORMING OPERATIONS REFRACTORIES SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG, OR MIXTURESCONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER SLAG TRANSPORTING TREATMENT OF NATURAL STONE WORKING CEMENT, CLAY, OR STONE
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a method for manufacturing a concrete tube having high productivity even without using a centrifugal molding machine or a vibrating pressure molding machine and without bringing about insufficient packing. SOLUTION: The method for manufacturing the concrete tube comprises the steps of preparing a highly flowing concrete mixed with an accelerator of an amount in which a solidification starting time becomes 1 to 3 hours, casting the concrete in a form, and molding the concrete tube.