| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a cement-based solidification material which is used for soil improvement and ensures high strength for ground subjected to solidification treatment therewith and a small amount of hexavalent chromium eluted from the ground. <P>SOLUTION: The solidification material is based on cement clinker powder, contains gypsum powder, blast furnace slag powder and limestone powder, and is obtained by mixing cement clinker and gypsum together with at least one of blast furnace slag and limestone and pulverizing the mixture. It is preferable that the solidification material has a Blaine specific surface area of 3,500-5,000 cm<SP POS="POST">2</SP>/g and contains ≥50 wt.% of the cement clinker powder, wherein the total amount of the cement clinker powder and the gypsum powder is 60-80 wt.%, while the total amount of the blast furnace slag powder and the limestone powder is 20-40 wt.%, and a content ratio between the blast furnace slag powder and the limestone powder is 100:1 to 1:1. <P>COPYRIGHT: (C)2012,JPO&INPIT |
