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Mechanical Performance of Fly Ash Based Geopolymer (FAG) as Road Base Stabilizer

This study examines the strength development of fly ash-based geopolymer (FAG) as a stabilizer for road base material for pavement construction. In the last decade, there has been a rapid development of conventionally treated bases, such as cement-treated bases. However, a major problem with this ki...

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Autores principales: Sofri, Liyana Ahmad, Abdullah, Mohd Mustafa Al Bakri, Sandu, Andrei Victor, Imjai, Thanongsak, Vizureanu, Petrica, Hasan, Mohd Rosli Mohd, Almadani, Mohammad, Aziz, Ikmal Hakem Ab, Rahman, Farahiyah Abdul
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9607395/
https://www.ncbi.nlm.nih.gov/pubmed/36295305
http://dx.doi.org/10.3390/ma15207242
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author Sofri, Liyana Ahmad
Abdullah, Mohd Mustafa Al Bakri
Sandu, Andrei Victor
Imjai, Thanongsak
Vizureanu, Petrica
Hasan, Mohd Rosli Mohd
Almadani, Mohammad
Aziz, Ikmal Hakem Ab
Rahman, Farahiyah Abdul
author_facet Sofri, Liyana Ahmad
Abdullah, Mohd Mustafa Al Bakri
Sandu, Andrei Victor
Imjai, Thanongsak
Vizureanu, Petrica
Hasan, Mohd Rosli Mohd
Almadani, Mohammad
Aziz, Ikmal Hakem Ab
Rahman, Farahiyah Abdul
author_sort Sofri, Liyana Ahmad
collection PubMed
description This study examines the strength development of fly ash-based geopolymer (FAG) as a stabilizer for road base material for pavement construction. In the last decade, there has been a rapid development of conventionally treated bases, such as cement-treated bases. However, a major problem with this kind of application is the shrinkage cracking in cement-treated bases that may result in the reflection cracks on the asphalt pavement surface. This study explores the effects of FAG on base layer properties using mechanistic laboratory evaluation and its practicability in pavement base layers. The investigated properties are flexural strength (FS), unconfined compressive strength (UCS), shrinkage, and resilient modulus (RM), as well as indirect tensile strength (ITS). The findings showed that the mechanical properties of the mixture enhanced when FAG was added to 80–85% of crushed aggregate, with the UCS being shown to be a crucial quality parameter. The effectiveness of FAG base material can have an impact on the flexible pavements’ overall performance since the base course stiffness directly depends on the base material properties. As a stabilizing agent for flexible pavement applications, the FAG-stabilized base appeared promising, predicated on test outcomes.
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spelling pubmed-96073952022-10-28 Mechanical Performance of Fly Ash Based Geopolymer (FAG) as Road Base Stabilizer Sofri, Liyana Ahmad Abdullah, Mohd Mustafa Al Bakri Sandu, Andrei Victor Imjai, Thanongsak Vizureanu, Petrica Hasan, Mohd Rosli Mohd Almadani, Mohammad Aziz, Ikmal Hakem Ab Rahman, Farahiyah Abdul Materials (Basel) Article This study examines the strength development of fly ash-based geopolymer (FAG) as a stabilizer for road base material for pavement construction. In the last decade, there has been a rapid development of conventionally treated bases, such as cement-treated bases. However, a major problem with this kind of application is the shrinkage cracking in cement-treated bases that may result in the reflection cracks on the asphalt pavement surface. This study explores the effects of FAG on base layer properties using mechanistic laboratory evaluation and its practicability in pavement base layers. The investigated properties are flexural strength (FS), unconfined compressive strength (UCS), shrinkage, and resilient modulus (RM), as well as indirect tensile strength (ITS). The findings showed that the mechanical properties of the mixture enhanced when FAG was added to 80–85% of crushed aggregate, with the UCS being shown to be a crucial quality parameter. The effectiveness of FAG base material can have an impact on the flexible pavements’ overall performance since the base course stiffness directly depends on the base material properties. As a stabilizing agent for flexible pavement applications, the FAG-stabilized base appeared promising, predicated on test outcomes. MDPI 2022-10-17 /pmc/articles/PMC9607395/ /pubmed/36295305 http://dx.doi.org/10.3390/ma15207242 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Sofri, Liyana Ahmad
Abdullah, Mohd Mustafa Al Bakri
Sandu, Andrei Victor
Imjai, Thanongsak
Vizureanu, Petrica
Hasan, Mohd Rosli Mohd
Almadani, Mohammad
Aziz, Ikmal Hakem Ab
Rahman, Farahiyah Abdul
Mechanical Performance of Fly Ash Based Geopolymer (FAG) as Road Base Stabilizer
title Mechanical Performance of Fly Ash Based Geopolymer (FAG) as Road Base Stabilizer
title_full Mechanical Performance of Fly Ash Based Geopolymer (FAG) as Road Base Stabilizer
title_fullStr Mechanical Performance of Fly Ash Based Geopolymer (FAG) as Road Base Stabilizer
title_full_unstemmed Mechanical Performance of Fly Ash Based Geopolymer (FAG) as Road Base Stabilizer
title_short Mechanical Performance of Fly Ash Based Geopolymer (FAG) as Road Base Stabilizer
title_sort mechanical performance of fly ash based geopolymer (fag) as road base stabilizer
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9607395/
https://www.ncbi.nlm.nih.gov/pubmed/36295305
http://dx.doi.org/10.3390/ma15207242
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