Geopolymer concrete for curing at normal temperature

Recent studies have shown that the properties of emerging low-emission geopolymer binders are similar or superior to those of the OPC binder traditionally used for concrete. Most of the previous studies in literature used heat curing to demonstrate the properties of geopolymer mixtures. Though heat...

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Bibliographic Details
Main Authors: Sarker, Prabir, Nath, Pradip
Other Authors: Anjan K Chatterjee
Format: Conference Paper
Published: Coal Ash Institute of India 2014
Subjects:
Online Access:http://hdl.handle.net/20.500.11937/20755
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author Sarker, Prabir
Nath, Pradip
author2 Anjan K Chatterjee
author_facet Anjan K Chatterjee
Sarker, Prabir
Nath, Pradip
author_sort Sarker, Prabir
building Curtin Institutional Repository
collection Online Access
description Recent studies have shown that the properties of emerging low-emission geopolymer binders are similar or superior to those of the OPC binder traditionally used for concrete. Most of the previous studies in literature used heat curing to demonstrate the properties of geopolymer mixtures. Though heat curing is a common practice for making precast concrete products, it is an energy consuming process and can be viewed as a limitation for cast-in-situ applications of concrete. This paper presents an investigation on the behaviour of geopolymer concrete cured at relatively low temperature without any additional heat for the curing process. Small proportions of ground granulated blast furnace slag (GGBFS) were added with fly ash in order to improve the early age properties of geopolymer concrete. Test samples were cured at a temperature of 20-23oC. Results show that inclusion of slag helped achieve setting time and compressive strength comparable to those of OPC concrete at the early ages. Fracture properties were similar to those of conventional OPC concrete. Drying shrinkage of geopolymer concrete reduced when slag was included in the binder. Permeability properties and sulphate resistance of slag blended fly ash geopolymer are found to be better than those of OPC concrete.
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spelling curtin-20.500.11937-207552017-01-30T12:21:00Z Geopolymer concrete for curing at normal temperature Sarker, Prabir Nath, Pradip Anjan K Chatterjee fly ash Geopolymer concrete ambient temperature Recent studies have shown that the properties of emerging low-emission geopolymer binders are similar or superior to those of the OPC binder traditionally used for concrete. Most of the previous studies in literature used heat curing to demonstrate the properties of geopolymer mixtures. Though heat curing is a common practice for making precast concrete products, it is an energy consuming process and can be viewed as a limitation for cast-in-situ applications of concrete. This paper presents an investigation on the behaviour of geopolymer concrete cured at relatively low temperature without any additional heat for the curing process. Small proportions of ground granulated blast furnace slag (GGBFS) were added with fly ash in order to improve the early age properties of geopolymer concrete. Test samples were cured at a temperature of 20-23oC. Results show that inclusion of slag helped achieve setting time and compressive strength comparable to those of OPC concrete at the early ages. Fracture properties were similar to those of conventional OPC concrete. Drying shrinkage of geopolymer concrete reduced when slag was included in the binder. Permeability properties and sulphate resistance of slag blended fly ash geopolymer are found to be better than those of OPC concrete. 2014 Conference Paper http://hdl.handle.net/20.500.11937/20755 Coal Ash Institute of India restricted
spellingShingle fly ash
Geopolymer concrete
ambient temperature
Sarker, Prabir
Nath, Pradip
Geopolymer concrete for curing at normal temperature
title Geopolymer concrete for curing at normal temperature
title_full Geopolymer concrete for curing at normal temperature
title_fullStr Geopolymer concrete for curing at normal temperature
title_full_unstemmed Geopolymer concrete for curing at normal temperature
title_short Geopolymer concrete for curing at normal temperature
title_sort geopolymer concrete for curing at normal temperature
topic fly ash
Geopolymer concrete
ambient temperature
url http://hdl.handle.net/20.500.11937/20755