Pollution Research Paper

Vol 38, Issue 3, 2019; Page No.(832-838 )

POTENTIAL APPLICATION OF NANO PARTICLES IN GREEN CONCRETE FOR SUSTAINABLE BUILT ENVIRONMENT

J. REVATHY, P. GAJALAKSHMI AND N. NIRAIMATHI

Abstract

Owing to the need of overcoming the depletion of natural resources and to eliminate the emission of greenhouse gases during manufacturing of the most common construction material cement, an alternate material, eco friendly green concrete was suggested. Green concrete is cement-less geopolymer concrete activated by alkali solutions. This study presented the potential application of nano silica to overcome the need of heat activation of geopolymer and to enhance the strength and durability properties of green geopolymer concrete. Nano silica was added in three different dosages. Green concrete was tested for the compressive strength at various ages of curing. The durability properties were conducted through water absorption test, sorptivity test, acid attack test and sea water resistance test. Also, microstructural analysis was carried out to study the minute characteristics of green concrete. The test results of the experimental investigation showed that the addition of nano silica played a vital role in elimination of heat activation. On the other hand, 0.5% addition of nano silica modified green concrete improved its durability properties comparatively than the other mixes. It also observed that the nano silica modified green concrete enhanced its morphological structure and thus boosted the process of polymerization.

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