Impact of fly ash on time-dependent properties of agro-waste lightweight aggregate concrete

The utilization of by-products and waste materials to substitute for the natural or manufactured resources is considered as a practical way to obtain green building materials. In concrete mixtures, amongst the many available options, Fly Ash (FA) as a by-product pozzolan has been used as a partial r...

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Main Authors: Maghfouri, Mehdi, Alimohammadi, Vahid, Azarsa, Pejman, Asadi, Iman, Doroudi, Yashar, Balakrishnan, Balamohan
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Published: MDPI 2021
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Online Access:http://eprints.um.edu.my/34935/
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spelling my.um.eprints.349352022-05-28T01:57:21Z http://eprints.um.edu.my/34935/ Impact of fly ash on time-dependent properties of agro-waste lightweight aggregate concrete Maghfouri, Mehdi Alimohammadi, Vahid Azarsa, Pejman Asadi, Iman Doroudi, Yashar Balakrishnan, Balamohan Q Science (General) TA Engineering (General). Civil engineering (General) The utilization of by-products and waste materials to substitute for the natural or manufactured resources is considered as a practical way to obtain green building materials. In concrete mixtures, amongst the many available options, Fly Ash (FA) as a by-product pozzolan has been used as a partial replacement of cement. As for the aggregates, lightweight agro-waste oil palm shell (OPS) can be used as a replacement to conventional aggregate for the production of lightweight aggregate concrete. The present communication aims to investigate the impact of FA on time-dependent development properties of OPS lightweight aggregate concrete, including density, water absorption, compressive strength up to 120-days, and drying shrinkage up to the age of 365-days under standard moist curing, partially early curing, and non-curing conditions. Additionally, drying shrinkage crack development was investigated. In this study, two series of concrete mixtures with different substitution levels of OPS (0%, 50%, and 100%) and FA were tested. From the obtained results, it was concluded that the incorporation of fly ash in OPS concrete reduces the density and compressive strength values. Dually, the initial and final water absorption values plus the rate of drying shrinkage at early and long-term ages increased. On top of that, a high potential of drying shrinkage crack, especially for mixtures with 100% OPS, was identified. MDPI 2021-06 Article PeerReviewed Maghfouri, Mehdi and Alimohammadi, Vahid and Azarsa, Pejman and Asadi, Iman and Doroudi, Yashar and Balakrishnan, Balamohan (2021) Impact of fly ash on time-dependent properties of agro-waste lightweight aggregate concrete. Journal of Composites Science, 5 (6). ISSN 2504-477X, DOI https://doi.org/10.3390/jcs5060156 <https://doi.org/10.3390/jcs5060156>. 10.3390/jcs5060156
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
topic Q Science (General)
TA Engineering (General). Civil engineering (General)
spellingShingle Q Science (General)
TA Engineering (General). Civil engineering (General)
Maghfouri, Mehdi
Alimohammadi, Vahid
Azarsa, Pejman
Asadi, Iman
Doroudi, Yashar
Balakrishnan, Balamohan
Impact of fly ash on time-dependent properties of agro-waste lightweight aggregate concrete
description The utilization of by-products and waste materials to substitute for the natural or manufactured resources is considered as a practical way to obtain green building materials. In concrete mixtures, amongst the many available options, Fly Ash (FA) as a by-product pozzolan has been used as a partial replacement of cement. As for the aggregates, lightweight agro-waste oil palm shell (OPS) can be used as a replacement to conventional aggregate for the production of lightweight aggregate concrete. The present communication aims to investigate the impact of FA on time-dependent development properties of OPS lightweight aggregate concrete, including density, water absorption, compressive strength up to 120-days, and drying shrinkage up to the age of 365-days under standard moist curing, partially early curing, and non-curing conditions. Additionally, drying shrinkage crack development was investigated. In this study, two series of concrete mixtures with different substitution levels of OPS (0%, 50%, and 100%) and FA were tested. From the obtained results, it was concluded that the incorporation of fly ash in OPS concrete reduces the density and compressive strength values. Dually, the initial and final water absorption values plus the rate of drying shrinkage at early and long-term ages increased. On top of that, a high potential of drying shrinkage crack, especially for mixtures with 100% OPS, was identified.
format Article
author Maghfouri, Mehdi
Alimohammadi, Vahid
Azarsa, Pejman
Asadi, Iman
Doroudi, Yashar
Balakrishnan, Balamohan
author_facet Maghfouri, Mehdi
Alimohammadi, Vahid
Azarsa, Pejman
Asadi, Iman
Doroudi, Yashar
Balakrishnan, Balamohan
author_sort Maghfouri, Mehdi
title Impact of fly ash on time-dependent properties of agro-waste lightweight aggregate concrete
title_short Impact of fly ash on time-dependent properties of agro-waste lightweight aggregate concrete
title_full Impact of fly ash on time-dependent properties of agro-waste lightweight aggregate concrete
title_fullStr Impact of fly ash on time-dependent properties of agro-waste lightweight aggregate concrete
title_full_unstemmed Impact of fly ash on time-dependent properties of agro-waste lightweight aggregate concrete
title_sort impact of fly ash on time-dependent properties of agro-waste lightweight aggregate concrete
publisher MDPI
publishDate 2021
url http://eprints.um.edu.my/34935/
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score 13.209306