Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
CEMENT COMPOSITION AND METHOD FOR PRODUCING CEMENT HARDENING BODY
To provide a cement composition excellent in flowability and strength development even though the temperature of heating and drying after curing is low.SOLUTION: The cement composition includes: cement; silica fume having a BET specific surface area of 15 to 25 m/g; an inorganic powder having a 50% cumulative particle size of 0.8 to 5 μm; an aggregate A having a maximum particle size of 1.2 mm or less; an organic fiber having a diameter of 0.005 to 1.0 mm and a length of 2 to 30 mm comprising a polyparaphenylene benzobisoxazole fiber, a polyethylene fiber, a polyvinyl alcohol fiber or a polypropylene fiber; a high-performance water reducing agent; an antifoaming agent; and water in which the ratio of belite is 50.0 to 65.0 mass%; the ratio of aluminate phase is 1.0 to 2.4 mass%; and the ratio of cement is 55 to 65 vol%, the ratio of the silica fume is 5 to 25 vol% and the ratio of the inorganic powder is 15 to 35 vol% each in 100 vol% of the total amount of cement, the silica fume and the inorganic powder.SELECTED DRAWING: None
【課題】養生後の加熱乾燥の温度が低くても、流動性及び強度発現性に優れたセメント組成物を提供する。【解決手段】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０．００５〜１．０ｍｍでかつ長さが２〜３０ｍｍの、ポリパラフェニレンベンゾビスオキサゾール繊維、ポリエチレン繊維、ポリビニルアルコール繊維、またはポリプロピレン繊維からなる有機繊維、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、ビーライトの割合が５０．０〜６５．０質量％、アルミネート相の割合が１．０〜２．４質量％であり、セメント、上記シリカフューム及び上記無機粉末の合計量１００体積％中、セメントの割合が５５〜６５体積％、上記シリカフュームの割合が５〜２５体積％、上記無機粉末の割合が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 CEMENT HARDENING BODY
To provide a cement composition excellent in flowability and strength development even though the temperature of heating and drying after curing is low.SOLUTION: The cement composition includes: cement; silica fume having a BET specific surface area of 15 to 25 m/g; an inorganic powder having a 50% cumulative particle size of 0.8 to 5 μm; an aggregate A having a maximum particle size of 1.2 mm or less; an organic fiber having a diameter of 0.005 to 1.0 mm and a length of 2 to 30 mm comprising a polyparaphenylene benzobisoxazole fiber, a polyethylene fiber, a polyvinyl alcohol fiber or a polypropylene fiber; a high-performance water reducing agent; an antifoaming agent; and water in which the ratio of belite is 50.0 to 65.0 mass%; the ratio of aluminate phase is 1.0 to 2.4 mass%; and the ratio of cement is 55 to 65 vol%, the ratio of the silica fume is 5 to 25 vol% and the ratio of the inorganic powder is 15 to 35 vol% each in 100 vol% of the total amount of cement, the silica fume and the inorganic powder.SELECTED DRAWING: None
【課題】養生後の加熱乾燥の温度が低くても、流動性及び強度発現性に優れたセメント組成物を提供する。【解決手段】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０．００５〜１．０ｍｍでかつ長さが２〜３０ｍｍの、ポリパラフェニレンベンゾビスオキサゾール繊維、ポリエチレン繊維、ポリビニルアルコール繊維、またはポリプロピレン繊維からなる有機繊維、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、ビーライトの割合が５０．０〜６５．０質量％、アルミネート相の割合が１．０〜２．４質量％であり、セメント、上記シリカフューム及び上記無機粉末の合計量１００体積％中、セメントの割合が５５〜６５体積％、上記シリカフュームの割合が５〜２５体積％、上記無機粉末の割合が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 CEMENT HARDENING BODY
セメント組成物、及びセメント質硬化体の製造方法
YASUDA EIKI (Autor:in) / KONO KATSUYA (Autor:in) / MORI KANAKO (Autor:in)
31.08.2020
Patent
Elektronische Ressource
Japanisch
IPC:
C04B
Kalk
,
LIME
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