| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a concrete formed body production method by which the blacking of an exposed surface or the surface roughening of the formed body produced from fresh concrete obtained by using pozzolan is satisfactorily prevented and the concrete formed body obtained by the production method. <P>SOLUTION: The concrete formed body production method is passed through a first step, a second step and a third step. The first step is a step for mixing cement, the pozzolan, fine aggregate, coarse aggregate, water and a high performance air entraining (AE) water reducing agent to prepare fresh concrete, the second step is a step for mixing a separately prepared liquid foam body with the fresh concrete prepared in the first step to prepare fresh concrete mixed with the liquid foam and the third step is a step for placing the fresh concrete mixed with the liquid foam body prepared in the second step in a forming frame on which a releasing agent is preapplied and steam-curing the placed concrete to obtain the concrete formed body. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
