A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
CEMENT COMPOSITION, AND MANUFACTURING METHOD OF CEMENT HARDENED BODY
To provide a cement composition capable of manufacturing a cement hardened body having high compression strength and high flexure strength, and excellent in impact resistance.SOLUTION: There is provided a cement composition containing cement, silica fume having BET specific surface area of 15 to 25 m/g, an inorganic powder having 50% volume accumulation particle diameter of 0.8 to 5 μm, an aggregate A having maximum particle diameter of 1.2 mm or less, a metal fiber having diameter of 0.01 to 1.0 mm and length of 2 to 30 mm, a high performance water reducing agent, an antifoam agent, and water, with percentage of the cement of 55 to 65 vol.%, percentage of the silica fume of 5 to 25 vol.%, percentage of the inorganic powder of 15 to 35 vol.% in total amount of 100 vol.% of the cement, the silica fume and the inorganic powder, and percentage of the metal fiber in the cement composition of over 3.0 vol.% and 4.5 vol.% or less.SELECTED DRAWING: None
【課題】高い圧縮強度及び高い曲げ強度を有し、かつ、耐衝撃性に優れるセメント質硬化体を製造することができる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％体積累積粒径が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、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、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％であり、セメント組成物中の金属繊維の割合が、３．０体積％を超え、４．５体積％以下であるセメント組成物。【選択図】なし
CEMENT COMPOSITION, AND MANUFACTURING METHOD OF CEMENT HARDENED BODY
To provide a cement composition capable of manufacturing a cement hardened body having high compression strength and high flexure strength, and excellent in impact resistance.SOLUTION: There is provided a cement composition containing cement, silica fume having BET specific surface area of 15 to 25 m/g, an inorganic powder having 50% volume accumulation particle diameter of 0.8 to 5 μm, an aggregate A having maximum particle diameter of 1.2 mm or less, a metal fiber having diameter of 0.01 to 1.0 mm and length of 2 to 30 mm, a high performance water reducing agent, an antifoam agent, and water, with percentage of the cement of 55 to 65 vol.%, percentage of the silica fume of 5 to 25 vol.%, percentage of the inorganic powder of 15 to 35 vol.% in total amount of 100 vol.% of the cement, the silica fume and the inorganic powder, and percentage of the metal fiber in the cement composition of over 3.0 vol.% and 4.5 vol.% or less.SELECTED DRAWING: None
【課題】高い圧縮強度及び高い曲げ強度を有し、かつ、耐衝撃性に優れるセメント質硬化体を製造することができる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％体積累積粒径が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、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、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％であり、セメント組成物中の金属繊維の割合が、３．０体積％を超え、４．５体積％以下であるセメント組成物。【選択図】なし
CEMENT COMPOSITION, AND MANUFACTURING METHOD OF CEMENT HARDENED BODY
セメント組成物及びセメント質硬化体の製造方法
MORI KANAKO (author) / KONO KATSUYA (author) / TADA KATSUHIKO (author)
2019-06-27
Patent
Electronic Resource
Japanese
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