| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method for improving/solidifying soil, which is effective when taking measures to deal with soil contamination, soft ground and elution of a toxic substance from concrete. <P>SOLUTION: A liquid hardening agent is prepared by blending sodium salt based on sodium carbonate and sodium chloride, ammonium salt based on ammonium chloride principal component and a cobalt compound in a liquid of≥70 wt% so that the chlorine ion content and the sodium ion content are respectively 1-10 wt%, the cobalt content is 0.01-0.1 wt%, the evaporation residue is 10-20 wt% and the calcium ion content is≤0.1 wt%. A soil solidifying material is obtained by mixing the prepared liquid hardening agent in cement. Soil is improved/solidified by forcibly sending the obtained soil solidifying material into soil and agitating them. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
