Abstract
Use of environmental friendly materials in concrete to make concrete sustainable is gaining importance, as the growth of the construction sector is rapid and massive in India. Such a sustainable concrete is the geopolymer concrete with scrap steel slag coarse aggregate. The concrete replaces cement and natural coarse aggregate by fly ash and scrap steel slag. Mechanical Strength of the concrete of M20 grade was evaluated and found suitable. Concrete strength has no role without the concrete being durable. Experimental tests were carried out to check the durability of the concrete and the results are presented in this paper. M20 grade geopolymer concrete with scrap steel slag coarse aggregate was tested after ambient curing for 28 days and the results are compared with M20 grade cement concrete with conventional Coarse aggregate. Durability was checked based on Water absorption, Acid resistance, Sulphate resistance and Sorptivity. The experimental results indicate that geopolymer concrete exhibit excellent durability than conventional cement concrete.
Highlights
The degree of durability of concrete required depends mainly upon the environment of their exposure
This experimental work evaluates the short-term durability performance of geopolymer concrete made with class F type flyash and GGBS as binder
This paper presents the short-term durability report on the geopolymer concrete with scrap steel slag coarse aggregate
Summary
The degree of durability of concrete required depends mainly upon the environment of their exposure. Geopolymer concrete conserves the use of natural resources by replacing cement by flyash. This experimental work evaluates the short-term durability performance of geopolymer concrete made with class F type flyash and GGBS as binder. This paper presents the short-term durability report on the geopolymer concrete with scrap steel slag coarse aggregate. First the scrap steel slag was checked for its soundness, pH and Alkali Aggregate Reactivity as a measure of its durability and used in making concrete. Due to time constrains only the short-term durability properties of the concrete was studied and the results was compared with the same grade cement concrete with conventional coarse aggregate.
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