CEMENT ADMIXTURE, FIBER REINFORCED CEMENT MATERIAL, FIBER REINFORCED CEMENT MEMBER, AND METHOD FOR MANUFACTURING FIBER REINFORCED CEMENT MEMBER

PROBLEM TO BE SOLVED: To provide a cement member having strength sufficient for practicable use and has durability by using casting waste sand as a mixing raw material. SOLUTION: The cement admixture contains casting sand of 95 to 100wt% in particles below a grain size 150 μm, ≤50 μm in 50% volume c...

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Bibliographische Detailangaben
Hauptverfasser:	KITANO YOSHITADA, SOMEYA KOBO
Format:	Patent
Sprache:	eng
Schlagworte:	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 REFRACTORIES SLAG TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TREATMENT OF NATURAL STONE
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a cement member having strength sufficient for practicable use and has durability by using casting waste sand as a mixing raw material. SOLUTION: The cement admixture contains casting sand of 95 to 100wt% in particles below a grain size 150 μm, ≤50 μm in 50% volume cumulative particle diameter, ≥60wt% in the ratio of siliceous component in terms of SiO2, and ≤5.5wt% ignition loss. The fiber reinforced cement material containing (a) 3 to 30wt% cement admixture, (b) 20 to 40wt% cement, (c) 20 to 45wt% siliceous raw material, (d) 0 to 45wt% filler, and (e) 3 to 15wt% fibrous material. The method for manufacturing the fiber reinforced cement member includes a process of obtaining (1) the hydraulic composition by kneading the fiber reinforced cement material, the cement material, and water, (2) a process of forming a molding by molding the hydraulic composition, and (3) a process of hydrothermally curing the molding. COPYRIGHT: (C)2006,JPO&NCIPI