Heavy metal ions in soil may lead to the change in soil engineering properties. Their leakage would also harm the surrounding environment. The published literatures show that cement solidification technology can effectively improve the strength characteristics of heavy metal contaminated soils. Considering pollutant type and content

cement content and curing time

a series of experiment programs and theoretical analyses were performed to study the strength characteristics of heavy metal contaminated soils stabilized/solidified by cement. The test results show that the presence of metal contaminants will reduce soil strength; but as the increase of the cement content and the curing time

soil strength will be significantly enhanced. It is noticed that different pollutant types and contents will bring different influences; NaCl can promote the early strength of cement; but the CuCl2 and AlCl3 will hinder the cementation reaction during curing.