| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a high strength concrete composition which can reduce the viscosity of a concrete and can be effectively used in a centrifugal molding and to provide a high strength concrete molded body by using the high strength concrete composition without discharging sludge water. <P>SOLUTION: The concrete composition includes a cement, a coarse aggregate, a fine aggregate, a granule silica fume having a bulk density of 0.55-0.70 g/cm<SP>3</SP>, calcium sulfate and a naphthalenesulfonic acid based high performance water reducing agent, and the granule silica fume is contained at 5-15 mass% to the cement and the calcium sulfate is contained at 5-15 mass% to the amount of cement. The high strength concrete molded body is provided without generating sludge water by subjecting the composition to centrifugal molding. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
