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Experimental Investigations on Optimal Strength Parameters of Fly Ash Based Geopolymer Concrete

Kumar S. 1, Pradeepa J. 2, Ravindra P. M.3
1. Department of Civil Engineering, Jyothy Institute of Technology, Bangalore. Karnataka, India.
2. Structural Engineer, Structural Department, Design tree consultant Pvt. Ltd., Bangalore, Karnataka, India.
3. Department of Civil Engineering, Bangalore Institute of Technology, Bangalore, Karnataka, India.

Abstract—The present experimental program is aimed for optimal values of compressive strength, flexural strength and split tensile strength of Geopolymer concrete by varying the fly ash content and also intended to study the general properties of fresh Geopolymer concrete. As we know that compressive strength of concrete is important parameter for design aspect of structural member. IS: 456-2000 Code of practice specifies that the flexural strength of concrete (fcr )can be correlated with compressive strength (frk) by the equation,   , which is experimentally validated with conventional concrete. Here the flexural strength of Geopolymer concrete is experimentally investigated and check the validation as specified for conventional concrete. The split tensile strength of the Geopolymer concrete was conducted in relevance with IS: 5816 the results which varies from 8 to 10% of the compressive strength of Geopolymer concrete. Present experimental results of hard state Geopolymer concrete are almost in similar with conventional concrete.

Index Terms—Geopolymer concrete, Fly ash concrete, Geopolymer binders, GPC, Polymers.

Cite: Kumar S., Pradeepa J. and Ravindra P. M., "Experimental Investigations on Optimal Strength Parameters of Fly Ash Based Geopolymer Concrete," International Journal of Structural and Civil Engineering Research, Vol. 2, No. 2, pp. 143-152, May 2013.