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Experimental Investigation on Corrosion Control in Concrete

S. Nagamani, M. Dhivakar, A. Leema Margret, A. Dhanalakshmi

Abstract


The impact of aluminium oxide on concrete strength and corrosion resistance is discussed in this study. A total of 12 150mm x 150mm x 150mm concrete cubes were cast by weight of cement, simulating the corrosive impact of sea water. The aluminium oxide additive dose was adjusted from 0% to 15% by weight of cement in 5-percent increments. At the ages of 7 days, 14 days, and 28 days, the cubes were evaluated for compressive strength. After compression testing, the concrete samples were crushed to powder, and extracts produced in the normal method were evaluated for alkalinity and free chloride concentration. The test results show that by adding aluminium oxide in the range of 10 to 15% by weight of the cement, the free chloride content can be reduced significantly, while neither the compressive strength nor the ph were adversely affected. In fact, strength was increased by 4 to 20% depending on the curing period.


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References


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