Effect of paste aggregate ratio and curing methods on the performance of one-part alkali-activated concrete

This paper is aimed to investigate the engineering properties of high calcium fly ash-based one-part geopolymer concrete using different paste aggregate ratio (0.57, 0.45 and 0.35) and curing conditions (ambient curing, solar curing, and water curing). High calcium fly ash was activated with anhydro...

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Main Authors: Haruna, S., Mohammed, B.S., Wahab, M.M.A., Liew, M.S.
Format: Article
Published: Elsevier Ltd 2020
Online Access:http://scholars.utp.edu.my/id/eprint/23160/
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85087197898&doi=10.1016%2fj.conbuildmat.2020.120024&partnerID=40&md5=1e7289765f91104214d7deddc4d63b46
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spelling oai:scholars.utp.edu.my:231602023-02-03T12:42:28Z http://scholars.utp.edu.my/id/eprint/23160/ Effect of paste aggregate ratio and curing methods on the performance of one-part alkali-activated concrete Haruna, S. Mohammed, B.S. Wahab, M.M.A. Liew, M.S. This paper is aimed to investigate the engineering properties of high calcium fly ash-based one-part geopolymer concrete using different paste aggregate ratio (0.57, 0.45 and 0.35) and curing conditions (ambient curing, solar curing, and water curing). High calcium fly ash was activated with anhydrous sodium metasilicate powder at 12 of the total precursor materials and cured at three different curing conditions. Workability, compressive strength, splitting tensile strength, flexural strength, modulus of elasticity, Poisson's ratio, water absorption, and porosity have been investigated. The experimental results showed that the mechanical strength of one-part alkali-activated concrete (OPAAC) increases with the decrease in paste aggregate ratio across all the curing methods considered. The strength growth for ambient and water cured specimens is gradual and almost comparable to the solar cured specimens. Compressive strength of almost 70 MPa was obtained for ambient and water cured OPAAC and 90 MPa for solar-cured OPAAC. The paste aggregate ratio has little effect on the porosity of the OPAAC. Regardless of the curing methods, the developed one-part alkali-activated concrete exhibits excellent deformation and durability properties. © 2020 Elsevier Ltd Elsevier Ltd 2020 Article NonPeerReviewed Haruna, S. and Mohammed, B.S. and Wahab, M.M.A. and Liew, M.S. (2020) Effect of paste aggregate ratio and curing methods on the performance of one-part alkali-activated concrete. Construction and Building Materials, 261. https://www.scopus.com/inward/record.uri?eid=2-s2.0-85087197898&doi=10.1016%2fj.conbuildmat.2020.120024&partnerID=40&md5=1e7289765f91104214d7deddc4d63b46
institution Universiti Teknologi Petronas
building UTP Resource Centre
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Petronas
content_source UTP Institutional Repository
url_provider http://eprints.utp.edu.my/
description This paper is aimed to investigate the engineering properties of high calcium fly ash-based one-part geopolymer concrete using different paste aggregate ratio (0.57, 0.45 and 0.35) and curing conditions (ambient curing, solar curing, and water curing). High calcium fly ash was activated with anhydrous sodium metasilicate powder at 12 of the total precursor materials and cured at three different curing conditions. Workability, compressive strength, splitting tensile strength, flexural strength, modulus of elasticity, Poisson's ratio, water absorption, and porosity have been investigated. The experimental results showed that the mechanical strength of one-part alkali-activated concrete (OPAAC) increases with the decrease in paste aggregate ratio across all the curing methods considered. The strength growth for ambient and water cured specimens is gradual and almost comparable to the solar cured specimens. Compressive strength of almost 70 MPa was obtained for ambient and water cured OPAAC and 90 MPa for solar-cured OPAAC. The paste aggregate ratio has little effect on the porosity of the OPAAC. Regardless of the curing methods, the developed one-part alkali-activated concrete exhibits excellent deformation and durability properties. © 2020 Elsevier Ltd
format Article
author Haruna, S.
Mohammed, B.S.
Wahab, M.M.A.
Liew, M.S.
spellingShingle Haruna, S.
Mohammed, B.S.
Wahab, M.M.A.
Liew, M.S.
Effect of paste aggregate ratio and curing methods on the performance of one-part alkali-activated concrete
author_facet Haruna, S.
Mohammed, B.S.
Wahab, M.M.A.
Liew, M.S.
author_sort Haruna, S.
title Effect of paste aggregate ratio and curing methods on the performance of one-part alkali-activated concrete
title_short Effect of paste aggregate ratio and curing methods on the performance of one-part alkali-activated concrete
title_full Effect of paste aggregate ratio and curing methods on the performance of one-part alkali-activated concrete
title_fullStr Effect of paste aggregate ratio and curing methods on the performance of one-part alkali-activated concrete
title_full_unstemmed Effect of paste aggregate ratio and curing methods on the performance of one-part alkali-activated concrete
title_sort effect of paste aggregate ratio and curing methods on the performance of one-part alkali-activated concrete
publisher Elsevier Ltd
publishDate 2020
url http://scholars.utp.edu.my/id/eprint/23160/
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85087197898&doi=10.1016%2fj.conbuildmat.2020.120024&partnerID=40&md5=1e7289765f91104214d7deddc4d63b46
_version_ 1758580609747255296
score 13.214268