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Acid Resistance and Rapid Chloride Permeability of High Performance Concrete

M. Verapathran and P. Murthi

This paper presents the results of a study conducted to evaluate the effect of steel slag aging on acid resistance and rapid chloride permeability of high performance concrete (HPC). Effect of different aging periods (6, 12, 18, 24, 30, 36 and 42 months) of steel slag aggregates (SSA) on acid resistance and rapid chloride permeability of concrete was studied. Water cement ratio and cement/cementious materials contents are kept constant as 0.32 and 584 Kg/m3, respectively. It was observed that the aging process of SSA improves the acid resistance and rapid chloride permeability of HPC made with SSA. A minimum of 30 to 36 months aging of SSA is required to achieve the acid resistance and rapid chloride permeability of HPC at par with conventional concrete.