| 摘要 |
<p>PROBLEM TO BE SOLVED: To prepare a form mixed soil having enhanced flowability with insolubilization of pollution substances, relating to sand containing pollution substances such as heavy metals.SOLUTION: A material for preparing foam mixed soil contains an insolubilizer for insolubilization of pollution substances contained in polluted soil, and a foaming agent and an additive agent which become a base of foams mixed with the polluted soil. The insolubilizer contains polyvalent metal salts and the foaming agent is an anionic surfactant. Further the additive agent contains one or more kinds of compounds represented by the following general formulae, R3-O-(AO)p-R4 and HO-(AO)q-H (where R3 is a hydrocarbon group having 1 to 4 carbon atoms, R4 is a hydrogen atom or a hydrocarbon group having 1 to 4 carbon atoms, AO is a mixture of one or more kinds of oxyalkylene groups having 2 to 4 carbon atoms, p is an average addition mole number of AO and the number of 1 to 5, and q is the average addition mole number of AO and the number of 2 to 40).</p> |
