Experimental assessment of soil-cement mechanical bhaviour contaminated with organic pollution

Soil-cement has been used widely as a base material for constructing many projects، such as pavement of highways and lining of channels and reservoirs. This paper presents the effect of an organic contaminant (Glycerol) on the mechanical behavior and properties of soil and soil-cement mixtures. Soil samples were prepared by static compaction at maximum dry density and optimum moisture content for various percentages of cement and Glycerol and various curing durations. Results indicated that contaminated soil with Glycerol (3%، 6% and 9%) show lower compressive strength compare to natural soil. Furthermore the decrease in compressive strength is seen to be a function of Glycerol percentage. In addition the use of cement (3% and 6%) on natural soil will cause increase in compressive strength، furthermore the increase in the compressive strength of different soil-cement samples were seen to be a function of cement percentages and curing duration. In addition soil-cement mixtures contaminated with 3% of Glycerol show greater compressive strength compare to uncontaminated soil-cement mixture، however the use of higher percentages of Glycerol (6% and 9%) resulted in a noticeable decrease in strength compared to uncontaminated soil-cement mixtures.