Staff View: Effect of Fly Ash characteristics, sodium-based alkaline activators, and process variables on the compressive strength of siliceous Fly Ash geopolymers with microstructural properties: A comprehensive review

Effect of Fly Ash characteristics, sodium-based alkaline activators, and process variables on the compressive strength of siliceous Fly Ash geopolymers with microstructural properties: A comprehensive review

Geopolymer concrete (GPC) exhibits enhanced performance compared to conventional concrete across various dimensions. These include decreased CO2 emissions, elevated mechanical strength, improved thermal insulation, greater fire resistance, the valorization of industrial wastes and increased efficien...

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Main Authors:	Venkatesan G., Alengaram U.J., Ibrahim S., Ibrahim M.S.I.
Other Authors:	59166600700
Format:	Review
Published:	Elsevier Ltd 2025
Subjects:	Alkalinity Compressive strength Concretes Curing Fire resistance Fly ash Geopolymers Inorganic polymers Molar ratio Silicates Silicon Slags Sodium hydroxide Thermal insulation Alkaline activators Class F fly ash Compression strength Curing temperature Fly ash characteristics Geopolymer Geopolymer concrete Molarity Process Variables SiO2/al2O3 ratio Silica
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spelling	my.uniten.dspace-364462025-03-03T15:42:28Z Effect of Fly Ash characteristics, sodium-based alkaline activators, and process variables on the compressive strength of siliceous Fly Ash geopolymers with microstructural properties: A comprehensive review Venkatesan G. Alengaram U.J. Ibrahim S. Ibrahim M.S.I. 59166600700 26533874300 7202480735 57199802346 Alkalinity Compressive strength Concretes Curing Fire resistance Fly ash Geopolymers Inorganic polymers Molar ratio Silicates Silicon Slags Sodium hydroxide Thermal insulation Alkaline activators Class F fly ash Compression strength Curing temperature Fly ash characteristics Geopolymer Geopolymer concrete Molarity Process Variables SiO2/al2O3 ratio Silica Geopolymer concrete (GPC) exhibits enhanced performance compared to conventional concrete across various dimensions. These include decreased CO2 emissions, elevated mechanical strength, improved thermal insulation, greater fire resistance, the valorization of industrial wastes and increased efficiency in energy conservation and production costs. This review focuses on the impact of 11 factors such as class F Fly Ash (FA) characteristics (fineness, SiO2/Al2O3 ratio, and iron content), sodium-based alkaline activators parameters such as molarity of sodium hydroxide (SH), Silicate Modulus (SM) of sodium silicate (SS) solution, ratio of SS/SH solution, alkaline liquid to binder ratio, water to binder (w/b) ratio, H2O/Na2Oequivalent, and process variables such as heat curing temperature and heating duration on the compression strength of low calcium (class F or siliceous) FA-based geopolymers (GP). Existing literature explicitly indicates that the molarity of NaOH solution is the primary strength parameter that significantly affects the compression strength of the GPC, among other factors. The range of alkaline activator parameters and heat curing temperature contingent on the SiO2/Al2O3 ratio of FA moreover accurately the reactive SiO2/Al2O3. Among all factors, one of the crucial parameter is the water content because of its importance in geopolymerization; the additional water released during the chemical reaction has to be considered in the mix design. The aforementioned eleven parameters are analysed and reported in the development of the compressive strength. ? 2024 Elsevier Ltd Final 2025-03-03T07:42:28Z 2025-03-03T07:42:28Z 2024 Review 10.1016/j.conbuildmat.2024.136808 2-s2.0-85195602113 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85195602113&doi=10.1016%2fj.conbuildmat.2024.136808&partnerID=40&md5=e4485be3a42c455d1b1d557bc7d6b174 https://irepository.uniten.edu.my/handle/123456789/36446 437 136808 Elsevier Ltd Scopus
institution	Universiti Tenaga Nasional
building	UNITEN Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Tenaga Nasional
content_source	UNITEN Institutional Repository
url_provider	http://dspace.uniten.edu.my/
topic	Alkalinity Compressive strength Concretes Curing Fire resistance Fly ash Geopolymers Inorganic polymers Molar ratio Silicates Silicon Slags Sodium hydroxide Thermal insulation Alkaline activators Class F fly ash Compression strength Curing temperature Fly ash characteristics Geopolymer Geopolymer concrete Molarity Process Variables SiO2/al2O3 ratio Silica
spellingShingle	Alkalinity Compressive strength Concretes Curing Fire resistance Fly ash Geopolymers Inorganic polymers Molar ratio Silicates Silicon Slags Sodium hydroxide Thermal insulation Alkaline activators Class F fly ash Compression strength Curing temperature Fly ash characteristics Geopolymer Geopolymer concrete Molarity Process Variables SiO2/al2O3 ratio Silica Venkatesan G. Alengaram U.J. Ibrahim S. Ibrahim M.S.I. Effect of Fly Ash characteristics, sodium-based alkaline activators, and process variables on the compressive strength of siliceous Fly Ash geopolymers with microstructural properties: A comprehensive review
description	Geopolymer concrete (GPC) exhibits enhanced performance compared to conventional concrete across various dimensions. These include decreased CO2 emissions, elevated mechanical strength, improved thermal insulation, greater fire resistance, the valorization of industrial wastes and increased efficiency in energy conservation and production costs. This review focuses on the impact of 11 factors such as class F Fly Ash (FA) characteristics (fineness, SiO2/Al2O3 ratio, and iron content), sodium-based alkaline activators parameters such as molarity of sodium hydroxide (SH), Silicate Modulus (SM) of sodium silicate (SS) solution, ratio of SS/SH solution, alkaline liquid to binder ratio, water to binder (w/b) ratio, H2O/Na2Oequivalent, and process variables such as heat curing temperature and heating duration on the compression strength of low calcium (class F or siliceous) FA-based geopolymers (GP). Existing literature explicitly indicates that the molarity of NaOH solution is the primary strength parameter that significantly affects the compression strength of the GPC, among other factors. The range of alkaline activator parameters and heat curing temperature contingent on the SiO2/Al2O3 ratio of FA moreover accurately the reactive SiO2/Al2O3. Among all factors, one of the crucial parameter is the water content because of its importance in geopolymerization; the additional water released during the chemical reaction has to be considered in the mix design. The aforementioned eleven parameters are analysed and reported in the development of the compressive strength. ? 2024 Elsevier Ltd
author2	59166600700
author_facet	59166600700 Venkatesan G. Alengaram U.J. Ibrahim S. Ibrahim M.S.I.
format	Review
author	Venkatesan G. Alengaram U.J. Ibrahim S. Ibrahim M.S.I.
author_sort	Venkatesan G.
title	Effect of Fly Ash characteristics, sodium-based alkaline activators, and process variables on the compressive strength of siliceous Fly Ash geopolymers with microstructural properties: A comprehensive review
title_short	Effect of Fly Ash characteristics, sodium-based alkaline activators, and process variables on the compressive strength of siliceous Fly Ash geopolymers with microstructural properties: A comprehensive review
title_full	Effect of Fly Ash characteristics, sodium-based alkaline activators, and process variables on the compressive strength of siliceous Fly Ash geopolymers with microstructural properties: A comprehensive review
title_fullStr	Effect of Fly Ash characteristics, sodium-based alkaline activators, and process variables on the compressive strength of siliceous Fly Ash geopolymers with microstructural properties: A comprehensive review
title_full_unstemmed	Effect of Fly Ash characteristics, sodium-based alkaline activators, and process variables on the compressive strength of siliceous Fly Ash geopolymers with microstructural properties: A comprehensive review
title_sort	effect of fly ash characteristics, sodium-based alkaline activators, and process variables on the compressive strength of siliceous fly ash geopolymers with microstructural properties: a comprehensive review
publisher	Elsevier Ltd
publishDate	2025
_version_	1825816062935957504
score	13.244413

Effect of Fly Ash characteristics, sodium-based alkaline activators, and process variables on the compressive strength of siliceous Fly Ash geopolymers with microstructural properties: A comprehensive review

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