CONCRETE COMPOSITION FOR CENTRIFUGAL CASTING AND ITS MANUFACTURING METHOD

• Main Authors: MATSUSHIMA NOBUYUKI, ONISHI TOSHIKATSU, TAMATAKI KOJI
• Format: Patent
• Language: English
• Published: 04.10.2007
• Subjects: ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; LIME, MAGNESIA; METALLURGY; PERFORMING OPERATIONS; REFRACTORIES; SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG, OR MIXTURESCONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER; SLAG; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TRANSPORTING; TREATMENT OF NATURAL STONE; WORKING CEMENT, CLAY, OR STONE

PROBLEM TO BE SOLVED: To provide a concrete composition for centrifugal casting developing high strength in centrifugally casted concrete secondary products such as a pile, a pole, a Hume pipe and the like. SOLUTION: The concrete composition for centrifugal casting developing high strength contains high-early strength portland cement, a high strength admixture, a dispersant, an aggregate and water and is characterized by that the content of hemihydrate gypsum in the high-early strength portland cement is 20-80 mass%, the high strength admixture contains anhydrous gypsum and amorphous silica, the mass ratio of anhydrous gypsum to amorphous silica in the high strength admixture is 15/85-80/20 and the dispersant is a polycarboxylic acid-based dispersant. COPYRIGHT: (C)2008,JPO&INPIT