Experimental Study of Fly-Ash Based Geopolymer Lightweight Concrete using Foaming Agent

International Journal of Civil Engineering

© 2020 by SSRG - IJCE Journal

Volume 7 Issue 6

Year of Publication : 2020

Authors : Mahesh Yumnam, Makarand Dande

10.14445/23488352/IJCE-V7I6P111

How to Cite?

Mahesh Yumnam, Makarand Dande, "Experimental Study of Fly-Ash Based Geopolymer Lightweight Concrete using Foaming Agent," SSRG International Journal of Civil Engineering, vol. 7,  no. 6, pp. 88-91, 2020. Crossref, https://doi.org/10.14445/23488352/IJCE-V7I6P111

Abstract:

In this paper, two types of samples are investigated. Sample A, entirely of fly-ash (class-F) and Sample B with partial replacement of fine aggregate (2.36mm) at the ratio fly-ash: fine aggregate 1:1. The geopolymer paste is prepared by mixing alkaline activator (NaOH 12M and Na2SiO3) and fly-ash. The lightweight fly-ash based geopolymer concrete is prepared by foaming method (Air entrainment agent) with foam to geopolymer paste ratio 1.5:1. The mix design was carried out with the target unit weight of 1800 kg/m3. The samples were placed in 10cm mold and oven cured at 60o C for
48 hours and then cured at room temperature. Compressive strength tests, dry density, water absorption, and SEM were carried out for 7, 14, and 28 days.

Keywords:

Foamed concrete, Alkaline Activator, Fly-Ash, Geopolymer, Scanning Electron Microscopy.

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