| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a fine aggregate for concrete that simultaneously suppresses both of drying shrinkage and bleeding and maintains construction property of the same degree as that of conventional sand. <P>SOLUTION: This copper-slag-containing fine aggregate for concrete is copper-slag fine aggregate (CUS 1.2) that includes copper slag by 15 vol% or more and 45 vol% or less for the whole fine aggregate and where the particle size range of the copper slag is 1.2 mm in JIS A5011-3. Preferably, the content of copper slag in the whole fine aggregate is 35 vol% or more and 45 vol% or less. Thus, the drying shrinkage can be suppressed without using lime sand and construction property of the same degree as that of the conventional sand can be maintained. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
