| 摘要 |
PROBLEM TO BE SOLVED: To provide a concrete composition for centrifugal molding which can reduce sludge generation, sludge solid portion and sludge solid ratio without deteriorating the moldability in the molding or the performance of a concrete product and enabling the optimum formulation to be determined and a method of producing the concrete product using the composition by centrifugal molding. SOLUTION: The method of producing the concrete product uses the concrete composition for centrifugal molding which contains a polycarboxylic acid based water reducing agent having polyoxyalkylene group (where, the number of carbons is 2-4) at the side chain in such a quantity that the solid portion of the water reducing agent is 0.03-0.20 wt.% based on the quantity of a binder and≥30 wt.% water is contained. In the method of producing the concrete product, the concrete product is obtained by applying a centrifugal molding process to the composition. COPYRIGHT: (C)2009,JPO&INPIT |
