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

Mahesh Yumnam

doi:https://doi.org/10.14445/23488352/IJCE-V7I6P111

Research Article | Open Access

Volume 7 | Issue 6 | Year 2020 | Article Id. IJCE-V7I6P111 | DOI : https://doi.org/10.14445/23488352/IJCE-V7I6P111

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

Mahesh Yumnam, Makarand Dande

Citation :

Mahesh Yumnam, Makarand Dande, "Experimental Study of Fly-Ash Based Geopolymer Lightweight Concrete using Foaming Agent," 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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