Physical and mechanical properties of geopolymer mortar using alternative cementitious materials

Thatikonda Naresh; Mallik Mainak; Sarala Venkateswara Rao; Madduru Sri Ram Chand

doi:10.22712/susb.20240007

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2024 Vol.15, Issue 1 Preview Page Next Page

General Article

Physical and mechanical properties of geopolymer mortar using alternative cementitious materials

31 March 2024. pp. 82-96

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Abstract

This paper presents the most recent development aimed at addressing the environmental concerns associated with Ordinary Portland Cement (OPC) through geopolymer concrete (GPC). The study aims to assess the viability and potential of GPC using readily available constituent materials like ground granulated blast furnace slag, fly ash and rice husk ash as binding materials. Combinations of sodium silicate and sodium hydroxide are typically employed as alkaline activator solutions (AAS). The study investigates variables including NaOH molarities of 8M, 12M, and 16M to evaluate consistency, setting time, and compressive strength of GPC. NaOH and Na2SiO3 are combined in ratios of 1.5 and 2.0. Tests are conducted on mixtures containing various proportions of FA, GGBS, and rice husk ash (RHA). The findings indicate that consistency remains unaffected by NaOH concentration, while final setting time and compressive strength increase with higher NaOH concentration in AAS. This experimental study reveals insights into the effects of varying sodium hydroxide molarities (8M, 12M, and 16M) in the alkaline activator, as well as binder content variations, on the properties of GPC. These findings underscore the significance of sodium hydroxide molarity, binder composition, and curing conditions in shaping the performance of GPC for practical construction applications.

Keywords

geopolymer

sodium hydroxide

ground granulated blast furnace slag

rice husk ash

fly ash

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Information

Publisher :Sustainable Building Research Center (ERC) Innovative Durable Building and Infrastructure Research Center
Publisher(Ko) :건설구조물 내구성혁신 연구센터
Journal Title :International Journal of Sustainable Building Technology and Urban Development
Volume : 15
No :1
Pages :82-96
Received Date : 2023-12-18
Accepted Date : 2024-02-13
DOI :https://doi.org/10.22712/susb.20240007

International Journal of Sustainable Building Technology and Urban Development ISSN:2093-761X(Print) 2093-7628(Online)

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