Investigation on Behaviour of Fly Ash Based Geopolymer Concrete in Acidic Environment
Journal Title: International Journal of Modern Engineering Research (IJMER) - Year 2013, Vol 3, Issue 1
Abstract
Abstract: Geopolymer concrete results from the reaction of a source material that is rich in silica and alumina with alkaline liquid. The term geopolymer was introduced by Davidovits; geopolymers are members of the family of inorganic polymers. Geopolymer binders have been reported as being acid resistant and thus are promising and alternative binders for sewer pipe manufacture. This paper presents experimental data on the Behavior of fly ash based geopolymer concrete exposed to 5% acid solutions for up to 4 weeks. A class F fly ash based geopolymer concrete was initially cured for 24 hours at 60°C. And also the obtained results were compared with the conventional concrete exposed to 5% acid solutions for up to 4 weeks. The compressive strength of geopolymer concrete and conventional concrete of 150-mm cubes at an age of 28 days were 32MPa and 48.5MPa, respectively. Initially concrete cubes were cured for a period of 28 days and later cubes were immersed in acid solutions, After immersion in a 5 % acid solutions, samples were tested at 7, 14 and 28 days. The mass loss, compressive strength reductions were determined. In this experimental work 3 type of acid solutions are used, i.e., HCl, H2SO4 and MgSO4.The results confirmed that Geopolymer concrete is highly resistant to acid in terms of a very low mass loss and compressive strength loss when compared to conventional concrete.
Authors and Affiliations
Mr. K. Madhan Gopal
Keywords
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