HIGH-STRENGTH CONCRETE COMPOSITION FOR CENTRIFUGAL FORCE MOLDING AND ITS MANUFACTURING METHOD,申请号JP20070244664-传众专利搜索

HIGH-STRENGTH CONCRETE COMPOSITION FOR CENTRIFUGAL FORCE MOLDING AND ITS MANUFACTURING METHOD

申请公布号：JP2009073697(A)

申请号：JP20070244664

申请日期：2007.09.21

申请公布日期：2009.04.09

申请人：

UBE IND LTD

发明人：MATSUSHIMA NOBUYUKI;MOCHINAGA SHINJI

分类号：C04B28/04;B28B1/34;B28B21/80;C04B7/02;C04B22/06;C04B22/14;C04B24/22

主分类号：C04B28/04

摘要：PROBLEM TO BE SOLVED: To provide a concrete composition for centrifugal force molding exerting high strength in regard to centrifugally molded concrete secondary products such as a pile, a pole or a Hume pipe and the like. SOLUTION: In the high-strength concrete composition for centrifugal force molding containing ordinary portland cement, a high-strength additive, a dispersant, an aggregate and water, the containing ratio of gypsum hemihydrate in gypsum is 20-95 mass%, the containing rate of a gap phase is 17-23 mass% and the unit quantity of cement is 510-680 kg/m<SP>3</SP>in the ordinary portland cement, the high-strength additive contains anhydrous gypsum and noncrystalline silica wherein the mass ratio of anhydrous gypsum/noncrystalline silica is 15/85-90/10 and the dispersant is a naphthalene-based dispersant. COPYRIGHT: (C)2009,JPO&INPIT