A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
CEMENT COMPOSITION AND METHOD FOR PRODUCING HARDENED CEMENTITIOUS MATERIALS
To provide a cement composition which has high fluidity before curing and can exhibit high compressive strength and bending strength after curing even when the heat drying temperature is low.SOLUTION: A cement composition of this invention comprises portland cement, silica fume having a BET specific surface area of 15-25 m/g, inorganic powder having a 50% accumulated particle diameter of 0.8-5 μm, aggregate A having a maximum particle diameter of 1.2 mm or less, metal fibers having a diameter of 0.01-1.0 mm and a length of 2-30 mm, a high-performance water reducing agent, a defoaming agent, and water, in which the proportion of the belite is 50.0-65.0 mass% and the proportion of the aluminate phase (3CaO, AlO) is 1.0-2.4 mass% in the portland cement. And in the total amount of 100 volume% of Portland cement, silica fume and inorganic powder, the proportion of the portland cement is 55-65 volume%, the proportion of the silica fume is 5-25 volume%, and the proportion of the inorganic powder is 15-35 volume%.SELECTED DRAWING: None
【課題】硬化前には高い流動性を有し、かつ、加熱乾燥温度が低い場合であっても、硬化後には高い圧縮強度及び曲げ強度を発現することができるセメント組成物を提供する。【解決手段】ポルトランドセメント、ＢＥＴ比表面積が１５〜２５ｍ２／ｇのシリカフューム、５０％累積粒径が０．８〜５μｍの無機粉末、最大粒径が１．２ｍｍ以下の骨材Ａ、直径が０．０１〜１．０ｍｍでかつ長さが２〜３０ｍｍの金属繊維、高性能減水剤、消泡剤及び水を含むセメント組成物であって、ポルトランドセメント中、ビーライトの割合が５０．０〜６５．０質量％、アルミネート相（３ＣａＯ・Ａｌ２Ｏ３）の割合が１．０〜２．４質量％であり、ポルトランドセメント、シリカフューム及び無機粉末の合計量１００体積％中、ポルトランドセメントの割合が５５〜６５体積％、シリカフュームの割合が５〜２５体積％、無機粉末の割合が１５〜３５体積％であるセメント組成物。【選択図】なし
CEMENT COMPOSITION AND METHOD FOR PRODUCING HARDENED CEMENTITIOUS MATERIALS
To provide a cement composition which has high fluidity before curing and can exhibit high compressive strength and bending strength after curing even when the heat drying temperature is low.SOLUTION: A cement composition of this invention comprises portland cement, silica fume having a BET specific surface area of 15-25 m/g, inorganic powder having a 50% accumulated particle diameter of 0.8-5 μm, aggregate A having a maximum particle diameter of 1.2 mm or less, metal fibers having a diameter of 0.01-1.0 mm and a length of 2-30 mm, a high-performance water reducing agent, a defoaming agent, and water, in which the proportion of the belite is 50.0-65.0 mass% and the proportion of the aluminate phase (3CaO, AlO) is 1.0-2.4 mass% in the portland cement. And in the total amount of 100 volume% of Portland cement, silica fume and inorganic powder, the proportion of the portland cement is 55-65 volume%, the proportion of the silica fume is 5-25 volume%, and the proportion of the inorganic powder is 15-35 volume%.SELECTED DRAWING: None
【課題】硬化前には高い流動性を有し、かつ、加熱乾燥温度が低い場合であっても、硬化後には高い圧縮強度及び曲げ強度を発現することができるセメント組成物を提供する。【解決手段】ポルトランドセメント、ＢＥＴ比表面積が１５〜２５ｍ２／ｇのシリカフューム、５０％累積粒径が０．８〜５μｍの無機粉末、最大粒径が１．２ｍｍ以下の骨材Ａ、直径が０．０１〜１．０ｍｍでかつ長さが２〜３０ｍｍの金属繊維、高性能減水剤、消泡剤及び水を含むセメント組成物であって、ポルトランドセメント中、ビーライトの割合が５０．０〜６５．０質量％、アルミネート相（３ＣａＯ・Ａｌ２Ｏ３）の割合が１．０〜２．４質量％であり、ポルトランドセメント、シリカフューム及び無機粉末の合計量１００体積％中、ポルトランドセメントの割合が５５〜６５体積％、シリカフュームの割合が５〜２５体積％、無機粉末の割合が１５〜３５体積％であるセメント組成物。【選択図】なし
CEMENT COMPOSITION AND METHOD FOR PRODUCING HARDENED CEMENTITIOUS MATERIALS
セメント組成物、及びセメント質硬化体の製造方法
YASUDA EIKI (author) / KONO KATSUYA (author) / MORI KANAKO (author)
2020-05-07
Patent
Electronic Resource
Japanese
PRODUCING METHOD OF CEMENT OR HARDENED CEMENTITIOUS MATERIAL AND PRODUCING SYSTEM THEREOF
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