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World Journal of Engineering
Research and Technology

An International Peer Reviewed Journal for Engineering Research and Technology

ISSN 2454-695X

Impact Factor : 5.218

ICV : 79.45

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Abstract

EXPERIMENTAL STUDY ON THE STRENGTH AND DURABILITY OF FLY ASH COARSE AGGREGATE WITH ADDITION OF SODIUM SILICATE

Roshan Peter*

ABSTRACT

Concrete is a mixture of cement, aggregate and water. In order to conserve the natural resources, an artificial coarse aggregate created by the use of fly ash. In this study, the coarse aggregate is replaced with fly ash coarse aggregate. The strength of concrete was tested by performing compression test on cube, split tensile test on Cylinder, and flexural strength on beam. Sodium Silicate is added to increase the durability of concrete. Adding Sodium Silicate to concrete reduces the calcium hydroxide in the concrete, whereas there is an increase in the calcium silicate hydrate (C–S–H gel). This C–S–H gel partially fill the micro-pores, voids and cracks in the concrete thereby improving the compactness and water permeability of the structure. Various durability test conducted on concrete includes Rapid chloride penetration test, water permeability and Sorptivity. The test finding shows marginal increase in strength and significant improvements in the durability of light weight concrete structures.

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