Publication Date : 01/08/2006

Author(s) :


Volume/Issue :
Volume 1
Issue 1
(08 - 2006)

Abstract :

This paper reports the findings of an investigation into the behaviour of the compressive strength of concrete under the attack of chlorides corrosion. The corrosive action of chlorides on concrete was simulated by immersing concrete grade 30 cubes in 0%, 5%, 10%, 15% and 20% concentrations of hydrochloric acid for a total of 84 days, after previously ascertaining the compressive strength at 28 days of casting and curing. The compressive strength of the concrete after immersion in the acid was assessed at the ends of 28 days, 56 days and 84 days of immersion periods. It was observed during the immersion period that the concrete cubes turned greenish with a weak mortar surround. Except for the zero percentage concentration of the acid, a reduction in the compressive strength of the concrete immersed in the various concentrations of the acid was observed. The extent of compressive strength reduction depends on the concentration of the acid and the duration of immersion period. However, the degree of compressive strength reduction is neither directly proportional to the concentration of the acid nor directly proportional to the duration of immersion period.

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