Abstract
Some cement treated soils can leach hexavalent chromium, Cr (VI). Leaching tests of samples of previously executed cement treated soils and their surrounding soils have been performed. The results indicate that there is no Cr (VI) detected, even in the soil surrounding cement treated soil in which Cr (VI) is detected. This shows that Cr (VI) is adsorbed or reduced in the surrounding soil. A culum experiment and a batch experiment were done to confirm these effects. The experiments demonstrate that the capacity and strength of adsorption varies with the soil, that the strength of adsorption grows as time passes, and that the emergence of the redox action increases the quantity of Cr (VI) that is captured.
