A Review on Ambient Cured Geopolymer Concrete-Sustainable Concrete for the Future

The cement industry is one of the major contributors to global warming due to the release of greenhouse gases. An alternative low emission binding agent is needed to reduce the environmental impact caused by cement production. Geopolymer binder is an ideal material to substitute cement binder. Geopo...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2020-09, Vol.936 (1), p.12037
Main Authors: Nithin, A V, Soman, Mini, Raj, S Deepa
Format: Article
Language:English
Subjects:
Aluminates
Aluminosilicates
Aluminum silicates
Binders (materials)
Chemical composition
Composition effects
Concrete
Curing
Diffraction patterns
Durability
Environmental impact
Geopolymers
Greenhouse effect
Greenhouse gases
Materials substitution
Morphology
Silicates
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Summary:The cement industry is one of the major contributors to global warming due to the release of greenhouse gases. An alternative low emission binding agent is needed to reduce the environmental impact caused by cement production. Geopolymer binder is an ideal material to substitute cement binder. Geopolymer Concrete (GPC) is formed by the polymerisation of aluminates and silicates formed by the reaction of solid aluminosilicates with alkali activators. The source materials studied were waste by-products from industries. This paper reviews the strength and durability characteristics of Geopolymer Concrete under ambient curing conditions. The comparison and study of the morphology of different aluminosilicate source materials through X-ray diffraction (XRD) pattern and Scanning electron microscopy (SEM) analysis under different curing temperatures and the study on the chemical composition and its effect on alkali activators and aggregates helped to understand the nature and type of source materials and activators most desirable to develop GPC in ambient conditions. GPC formed in ambient curing conditions have considerable strength and durability characteristics and can be adopted as a sustainable replacement for conventional concrete.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/936/1/012037