| 摘要 |
<P>PROBLEM TO BE SOLVED: To suppress increase of an environmental load or cost increase, in a method for producing a hydraulic material by using a crushed material such as reproduced fine powder acquired by crushing concrete, or the like. <P>SOLUTION: This method for producing a hydraulic material by using a crushed material acquired by crushing concrete includes: a determination step for determining whether or not a material age of the concrete is within a prescribed fixed year, or whether or not the electric conductivity of suspension of the crushed material is a prescribed value or higher; and a mixing step for mixing blast furnace slag with the crushed material, when acquiring such a determination result that the material age is within the prescribed fixed year, or that the electric conductivity is the prescribed value or higher. <P>COPYRIGHT: (C)2012,JPO&INPIT |
