Compare the Strength of Fly Ash Based Geopolymer Concrete with Demolition Waste

International Journal of Civil Engineering

© 2018 by SSRG - IJCE Journal

Volume 5 Issue 1

Year of Publication : 2018

Authors : Jeetendra Ahirwar, Maninder Kaur, Ajeet

10.14445/23488352/IJCE-V5I1P104

How to Cite?

Jeetendra Ahirwar, Maninder Kaur, Ajeet, "Compare the Strength of Fly Ash Based Geopolymer Concrete with Demolition Waste," SSRG International Journal of Civil Engineering, vol. 5,  no. 1, pp. 20-24, 2018. Crossref, https://doi.org/10.14445/23488352/IJCE-V5I1P104

Abstract:

About 530 million tonnes of construction and demolition waste are generated every year in India. The disposal of this waste product is a very serious and hazardous problem as not only it requires huge space for its disposal but very little demolished waste is recycled or reused. On the other hand production of 1 ton of Ordinary Portland Cement emits 1 ton of CO2 which being a greenhouse gas induces the global warming. In this study experimental investigations have been carried out to access the effect of Geopolymer Concrete(GPC) which comprises of fly ash, demolition waste and activators i.e. sodium silicate (53% concentration) and sodium hydroxide(96% Purity & Molarity -14) to enhance the binding property with a heat curing at temperature of 80°C. The study was carried out to check the suitability of this Geopolymer concrete in construction by replacing 100% aggregate. Geopolymer concrete mixes of ratios 1:1.75:3.25, 1:1:1.85, 1:1.35:2.85 were prepared. A different characteristic of GPC with demolished waste were studied such as compressive strength, split tensile strength, slump value and compared with that of conventional concrete. It has been shown that the 7 days compressive and split tensile strength of demolition waste and fly ash based Geopolymer concrete is comparatively 6 to 15 % lesser than conventional concrete. The study thus shows that demolition waste can be utilized by replacing aggregate 100% in GPC which simultaneously solves the disposal problem of these waste products.

Keywords:

GPC, alkaline solution, demolition waste, compressive strength, split tensile strength.

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