| 摘要 |
PROBLEM TO BE SOLVED: To provide a solidification material excellent in penetrability to contaminated soil, generating less dust when the contaminated soil is scraped off, and easy to control scraping thickness, and provide a processing method of contaminated soil using the solidification material.SOLUTION: There is provided a solidification material containing magnesium oxide of 50 mass% or more, and having 7 μm or less of a particle diameter dwith a cumulative volume of 20%, 22 μm or less of a particle diameter dwith the cumulative volume of 50%, and 40 μm or less of a particle diameter dwith the cumulative volume of 80%, in the cumulative distribution of a particle size of the solidification material. Also there is provided a processing method of contaminated soil for removing the solidified contaminated soil by adding 1.5 to 3.0 kg of a slurry of the solidification material having a water/solidification material ratio (mass ratio) of 2.5 to 4.5 per 1 mof the contaminated soil in terms of magnesium oxide to solidify the contaminated soil. |
