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The degradation of concrete by acid attack has been a major problem which needs to be addressed with the utmost concern. This acid attack is primarily in the form of acid rain in low concentrations. This attack not only depends upon the type of the acid, but also on the concentration of the acid and the vulnerability of concrete. Portland cement concrete has high alkaline content and may be prone to acid attack by acidic media. The emergence of new alternative materials needs to address this issue by resisting acid attack to a large extent. Geopolymer materials are polymer minerals which are based on alumina and silica compounds and are a family of zeolites. The mechanism of corrosion of geopolymer concrete is tougher compared to that of conventional concrete. An experimental study was conducted to analyze the acid attack resistance of geopolymer concrete and Portland cement concrete. Durability of the concrete specimens were analyzed by immersing them in ph 1, ph 3 and ph 5 solutions for a period of 5 weeks and evaluating their resistance in terms of change of mass and compressive strength at regular intervals of one week each. Results indicated that Geopolymer concrete was highly resistant to sulphuric acid. Keywords-Geopolymer Concrete, Alumina, Silica, Sulphuric Acid.

An Experimental Investigation on the behaviour of Portland Cement Concrete and Geopolymer Concrete in acidic environment