CEMENT COMPOSITION

PURPOSE: To obtain a cement composition excellent in fluidity, kneadability and strength developability, and suppressed in temperature rise during cure with suppressed heat generation during hydration. CONSTITUTION: This cement composition comprises a total of 100 pts.wt. of 50-92 pts.wt. of high-be...

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Bibliographische Detailangaben
Hauptverfasser:	NARUSE HIROYASU, YOSHIDA HISATSUGU, INOUE TOSHIKATSU
Format:	Patent
Sprache:	eng
Schlagworte:	ARTIFICIAL STONE CEMENTS CERAMICS CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS 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:	PURPOSE: To obtain a cement composition excellent in fluidity, kneadability and strength developability, and suppressed in temperature rise during cure with suppressed heat generation during hydration. CONSTITUTION: This cement composition comprises a total of 100 pts.wt. of 50-92 pts.wt. of high-belite-based Portland clement, 5-25 pts.wt. of silica fume and 3-25 pts.wt. of limestone fine powder. The high-belite-based Portland cement stands reduced to a minimum in the amounts of both alite and aluminate constituting clinker mineral composition in the cement in order to reduce the heat of hydration to a minimum so as to prevent the temperature rise of the resultant concrete structural body and also stands sufficiently increased in the amount of belite excellent in long-term strength developability. Owing to using the high-belite-based Portland cement, heat generation due to cement hydration can be suppressed to low levels; therefore, in the resultant thick-walled high- strength concrete structural body, temperature rise is small, crack development prevented, and strength developability improved.