Peat modification integrating Geopolymer and fly ash

Peat is known of its high compressibility, low shear strength, natural moisture content and long-term settlement. This indicates that peat is problematic, and it is necessary to improve the soil so that it can be used for supporting foundations. Fly ash is one of the source materials for geopolymer...

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Published in:IOP Conference Series: Materials Science and Engineering
Main Author: Mohamed Jais I.B.; Abdullah N.; Md Ali M.A.; Johar M.A.
Format: Conference paper
Language:English
Published: Institute of Physics Publishing 2019
Online Access:https://www.scopus.com/inward/record.uri?eid=2-s2.0-85067884903&doi=10.1088%2f1757-899X%2f527%2f1%2f012021&partnerID=40&md5=d9b5d4a13b76a2ecfbc48411f3e49b83
id 2-s2.0-85067884903
spelling 2-s2.0-85067884903
Mohamed Jais I.B.; Abdullah N.; Md Ali M.A.; Johar M.A.
Peat modification integrating Geopolymer and fly ash
2019
IOP Conference Series: Materials Science and Engineering
527
1
10.1088/1757-899X/527/1/012021
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85067884903&doi=10.1088%2f1757-899X%2f527%2f1%2f012021&partnerID=40&md5=d9b5d4a13b76a2ecfbc48411f3e49b83
Peat is known of its high compressibility, low shear strength, natural moisture content and long-term settlement. This indicates that peat is problematic, and it is necessary to improve the soil so that it can be used for supporting foundations. Fly ash is one of the source materials for geopolymer binders and available abundantly worldwide. It is considered as eco-friendly when it is used in the construction industry since it is a recycled material. A geopolymer mix known as Geopolymer Flexible Activator (GeoFlexA) and fly ash is used as an alternative solution to solve ground settlement issues related to soft soils. The purpose of this research is to modify peat by binding GeoFlexA and fly ash together. This research is carried out to determine the effect of GeoFlexA admixture and fly ash to the strength of peat. The index property tests include moisture content, organic content, fibre content, specific gravity and pH test only. Compaction test and Unconfined Compressive Test (UCT) is used to prepare samples and to analyse the strength respectively. The UCT was conducted after the samples were prepared in the mould and allowed to cure under 0, 7, 14, 28 and 56 days. Various percentages of fly ash used are 5%, 10%, 15% and 20% while a constant GeoFlexA admixture is used at 40% of the soil weight. The experimental results demonstrated that the compressive strength of the modified peat increases significantly with the fly ash content and curing time. These indicated that the mixture of GeoFlexA and fly ash can promote to an enhanced compressive strength of peat, hence, become a potential admixture for modifying peat. © 2019 IOP Publishing Ltd. All rights reserved.
Institute of Physics Publishing
17578981
English
Conference paper
All Open Access; Gold Open Access
author Mohamed Jais I.B.; Abdullah N.; Md Ali M.A.; Johar M.A.
spellingShingle Mohamed Jais I.B.; Abdullah N.; Md Ali M.A.; Johar M.A.
Peat modification integrating Geopolymer and fly ash
author_facet Mohamed Jais I.B.; Abdullah N.; Md Ali M.A.; Johar M.A.
author_sort Mohamed Jais I.B.; Abdullah N.; Md Ali M.A.; Johar M.A.
title Peat modification integrating Geopolymer and fly ash
title_short Peat modification integrating Geopolymer and fly ash
title_full Peat modification integrating Geopolymer and fly ash
title_fullStr Peat modification integrating Geopolymer and fly ash
title_full_unstemmed Peat modification integrating Geopolymer and fly ash
title_sort Peat modification integrating Geopolymer and fly ash
publishDate 2019
container_title IOP Conference Series: Materials Science and Engineering
container_volume 527
container_issue 1
doi_str_mv 10.1088/1757-899X/527/1/012021
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-85067884903&doi=10.1088%2f1757-899X%2f527%2f1%2f012021&partnerID=40&md5=d9b5d4a13b76a2ecfbc48411f3e49b83
description Peat is known of its high compressibility, low shear strength, natural moisture content and long-term settlement. This indicates that peat is problematic, and it is necessary to improve the soil so that it can be used for supporting foundations. Fly ash is one of the source materials for geopolymer binders and available abundantly worldwide. It is considered as eco-friendly when it is used in the construction industry since it is a recycled material. A geopolymer mix known as Geopolymer Flexible Activator (GeoFlexA) and fly ash is used as an alternative solution to solve ground settlement issues related to soft soils. The purpose of this research is to modify peat by binding GeoFlexA and fly ash together. This research is carried out to determine the effect of GeoFlexA admixture and fly ash to the strength of peat. The index property tests include moisture content, organic content, fibre content, specific gravity and pH test only. Compaction test and Unconfined Compressive Test (UCT) is used to prepare samples and to analyse the strength respectively. The UCT was conducted after the samples were prepared in the mould and allowed to cure under 0, 7, 14, 28 and 56 days. Various percentages of fly ash used are 5%, 10%, 15% and 20% while a constant GeoFlexA admixture is used at 40% of the soil weight. The experimental results demonstrated that the compressive strength of the modified peat increases significantly with the fly ash content and curing time. These indicated that the mixture of GeoFlexA and fly ash can promote to an enhanced compressive strength of peat, hence, become a potential admixture for modifying peat. © 2019 IOP Publishing Ltd. All rights reserved.
publisher Institute of Physics Publishing
issn 17578981
language English
format Conference paper
accesstype All Open Access; Gold Open Access
record_format scopus
collection Scopus
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