Study on the maximum dry density of sea mud modified clay as the anti-seepage layer material in petrochemical field

Abstract

As the pollution of the ground water and soil in the petrochemical field area is becoming more and more serious, the anti-seepage layer is an effective way to eliminate the pollution of the ground water and soil, and has received extensive attention. As the natural anti-seepage material resources which can meet the specification requirements are limited, it is imperative to study artificial modification of natural anti-seepage materials. Compaction degree is the main factor affecting the permeability of materials. It’s quite necessary to determine the compactness parameters of materials before the study of permeability. In this paper, the maximum dry density and the best water content of the mixture are measured by mixing local clay and sea mud in a variety of proportions, and the maximum dry density of the mixture is analyzed, and the optimum mass ratio of the material used as the material of the anti-seepage layer is determined. The test shows that when the mass ratio of clay to clay is 1:4 and the water content is 16%, the maximum dry density is close to the maximum and the compaction characteristic is the best and the maximum dry density reaches 1.78g×cm−3. The results provide sufficient data support for the follow-up study.