| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a simple and low-cost improvement method which effectively utilizes construction sludge generated in various construction sites without using it for reclamation, and an improvement system used for it. <P>SOLUTION: This method improves the construction sludge with a cone index of less than 200 kN/m<SP>2</SP>. Melting furnace slag fine powder which has an average particle diameter of equal to or less than 40μm or of which the specific surface area has been adjusted, blast furnace slag fine powder, and steel slag which contains particles of equal to or more than 10% with an average particle diameter of equal to or less than 150μm, and has a mass ratio of calcium oxide to silicon oxide of 2.0-3.5 are added to the construction sludge so as to satisfy equation (A), equation (B), and equation (C), and they are mixed and agitated, thereby improved soil with a cone index of equal to or more than 200 kN/m<SP>2</SP>is obtained. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
