| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide concrete capable of using a waste material or a material originated from the waste material in a large quantity. <P>SOLUTION: The concrete is obtained by using a hydraulic composition containing (A) a crashed material of a fired material A having a hydraulic modulus of 1.8 to 2.3, a silica modulus of 1.3 to 2.3, and an iron modulus of 1.3 to 2.8, (B) a pulverized material of a fired material B which includes 10 to 100 parts by mass of 2CaO-Al<SB>2</SB>O<SB>3</SB>-SiO<SB>2</SB>to 100 parts by mass of 2CaO-SiO<SB>2</SB>, and in which the amount of 3CaO-Al<SB>2</SB>O<SB>3</SB>is≤20 parts by mass, and (C) gypsum. In the concrete, a portion or whole of the aggregate consists of a waste material. The fired material is preferably prepared by using at least one kind selected from industrial waste materials, general waste materials, and soil from construction sites as a raw material. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
