公开(公告)号：EP3196179A4

公开(公告)日：2018-04-18

申请号：EP15836362

申请日：2015-08-25

申请人： TAIHEIYO CEMENT CORP

发明人： NAKAYAMA RISA ,  KONO KATSUYA ,  TADA KATSUHIKO ,  MORI HIROAKI ,  SUGIYAMA SHINGO ,  MAEHORI SHINPEI

IPC分类号： C04B28/04 ,  C04B7/02 ,  C04B14/38 ,  C04B14/48 ,  C04B16/06 ,  C04B18/14 ,  C04B22/06 ,  C04B24/26 ,  C04B28/02 ,  C04B40/02

CPC分类号： C04B28/04 ,  B28B1/14 ,  B28B11/245 ,  C04B7/02 ,  C04B14/04 ,  C04B14/38 ,  C04B14/48 ,  C04B16/06 ,  C04B18/02 ,  C04B18/14 ,  C04B18/146 ,  C04B22/06 ,  C04B24/04 ,  C04B24/26 ,  C04B28/02 ,  C04B40/02 ,  C04B40/0263 ,  C04B2103/302 ,  C04B2103/50 ,  C04B2201/52 ,  Y02W30/94 ,  C04B14/06 ,  C04B14/068 ,  C04B18/08 ,  C04B20/0076 ,  C04B20/008 ,  C04B2103/30 ,  C04B2103/32

摘要： Provided is a cement composition that has high fluidity (for example, a 0-drop flow value of 200 mm or more) before curing and exhibits high compressive strength (for example, 320 N/mm 2 or more) after curing. The cement composition includes a cement, a silica fume having a BET specific surface area of from 10 m 2 /g to 25 m 2 /g, an inorganic powder having a 50% cumulative particle size of from 0.8 µm to 5 µm, a fine aggregate having a maximum particle size of 1.2 mm or less, a water reducing agent, an antifoaming agent, and water. The ratio of the cement is from 55 vol% to 65 vol%, the ratio of the silica fume is from 5 vol% to 25 vol%, and the ratio of the inorganic powder is from 15 vol% to 35 vol% in the total amount of 100 vol% of the cement, the silica fume, and the inorganic powder.