| 摘要 |
PROBLEM TO BE SOLVED: To provide a soil improving method for using slag itself as a soil improving material. SOLUTION: In this soil improving method, calcium aluminate slag having hydraulicity is added to a powder deposited layer and is mixed with the powder deposited layer to spread uniformly and water is added to harden it in order to improve the powder deposited layer. In this soil improving method, soil and calcium aluminate slag having hydraulicity are mixed and water is added to harden it in order to improve the soil. The calcium aluminate slag contains Al<SB>2</SB>O<SB>3</SB>of 20 to 40%, CaO of 30 to 60%, and SiO<SB>2</SB>of 3 to 15% by mass%. The calcium aluminate slag contains Al<SB>2</SB>O<SB>3</SB>of 25 to 45%, (CaO+CaF<SB>2</SB>)/Al<SB>2</SB>O<SB>3</SB>of 1.1 to 2.0, and CaF<SB>2</SB>of 2 to 6% by mass%. Soil is improved by using the slag having hydraulicity to solidify powder and reinforce soft ground inexpensively, thereby improving the soil. COPYRIGHT: (C)2007,JPO&INPIT |
