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A platform for research: civil engineering, architecture and urbanism
CEMENT COMPOSITION, AND MANUFACTURING METHOD CEMENT HARDENED BODY
To provide a cement composition that is difficult to cause stiffness and can maintain excellent fluidity before the hardening, irrespective of not using plaster or using a small amount of the plaster, and is difficult to cause DEF after the hardening.SOLUTION: A cement composition comprising cement clinker powder, limestone powder with a blaine specific surface area of 7000 cm2/g or larger, and at least any one of a high performance water reducing agent and a high performance AE water reducing agent, in which a ratio of the limestone in a total amount of the cement clinker powder and limestone powder is 1 to 6 mass%, an amount of at least any one of the high performance water reducing agent and the high performance AE water reducing agent to 100 pts.mass of a total of the cement clinker powder and the limestone powder is, in solid content conversion, 0.1 to 1.5 pts.mass, and a ration of a sulfur compound in the cement composition is, in SO3 conversion, 0.1 to 1.0 mass%.SELECTED DRAWING: None
【課題】せっこうを用いない、又は、せっこうの量が少ないにもかかわらず、硬化前には、こわばりが生じにくく、良好な流動性を維持することができ、また、硬化後には、ＤＥＦが起こりにくいセメント組成物を提供する。【解決手段】セメントクリンカ粉末と、ブレーン比表面積が７，０００ｃｍ２／ｇ以上の石灰石粉末と、高性能減水剤及び高性能ＡＥ減水剤の少なくともいずれか一方を含むセメント組成物であって、セメントクリンカ粉末と石灰石粉末の合計量中の石灰石粉末の割合が１〜６質量％であり、セメントクリンカ粉末と石灰石粉末の合計１００質量部に対する高性能減水剤及び高性能ＡＥ減水剤の少なくともいずれか一方の量が、固形分換算値で０．１〜１．５質量部であり、セメント組成物中の硫黄化合物の割合がＳＯ３換算値で０．１〜１．０質量％であるセメント組成物。【選択図】なし
CEMENT COMPOSITION, AND MANUFACTURING METHOD CEMENT HARDENED BODY
To provide a cement composition that is difficult to cause stiffness and can maintain excellent fluidity before the hardening, irrespective of not using plaster or using a small amount of the plaster, and is difficult to cause DEF after the hardening.SOLUTION: A cement composition comprising cement clinker powder, limestone powder with a blaine specific surface area of 7000 cm2/g or larger, and at least any one of a high performance water reducing agent and a high performance AE water reducing agent, in which a ratio of the limestone in a total amount of the cement clinker powder and limestone powder is 1 to 6 mass%, an amount of at least any one of the high performance water reducing agent and the high performance AE water reducing agent to 100 pts.mass of a total of the cement clinker powder and the limestone powder is, in solid content conversion, 0.1 to 1.5 pts.mass, and a ration of a sulfur compound in the cement composition is, in SO3 conversion, 0.1 to 1.0 mass%.SELECTED DRAWING: None
【課題】せっこうを用いない、又は、せっこうの量が少ないにもかかわらず、硬化前には、こわばりが生じにくく、良好な流動性を維持することができ、また、硬化後には、ＤＥＦが起こりにくいセメント組成物を提供する。【解決手段】セメントクリンカ粉末と、ブレーン比表面積が７，０００ｃｍ２／ｇ以上の石灰石粉末と、高性能減水剤及び高性能ＡＥ減水剤の少なくともいずれか一方を含むセメント組成物であって、セメントクリンカ粉末と石灰石粉末の合計量中の石灰石粉末の割合が１〜６質量％であり、セメントクリンカ粉末と石灰石粉末の合計１００質量部に対する高性能減水剤及び高性能ＡＥ減水剤の少なくともいずれか一方の量が、固形分換算値で０．１〜１．５質量部であり、セメント組成物中の硫黄化合物の割合がＳＯ３換算値で０．１〜１．０質量％であるセメント組成物。【選択図】なし
CEMENT COMPOSITION, AND MANUFACTURING METHOD 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 HIROAKI (author) / SHIMAKAGE RYOJI (author) / KURONO JOTARO (author) / SHIBAGAKI MASANORI (author)
2021-10-07
Patent
Electronic Resource
Japanese
IPC:
C04B
Kalk
,
LIME
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