Strength properties of steel slag stabilized mixes

A new type of low-strength concrete made with steel slag and gravel was investigated in this report. Increasing the amount of cement or steel slag in the mix increased the maximum dry density and optimum moisture content of the concrete. Additionally, the compressive and indirect tensile strength of the concrete increased with curing age. The strength of mixes with low cement contents increased with the slag content, while that of mixes with higher cement contents decreased with slag content. Finally, the average indirect tensile strength for all mixes as a percentage of compressive strength was ∼14%.