Strength and Microstructural Properties of Fly Ash Based Geopolymer Concrete Containing High-Calcium and Water Absorptive Aggregate

In this research, performance of limestone and oil palm shell (OPS) as the alternative aggregates in fly ash based geopolymer concrete was evaluated based on the fresh and hardened concrete test. Fly ash and oil palm shell were studied due to their abundant availability as industrial and agricultura...

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Main Authors:	Rahimah, Embong, Kusbiantoro, Andri, Nasir, Shaﬁq, Muhd Fadhil, Nuruddin
Format:	Article
Language:	English
Published:	Elsevier 2016
Subjects:	T Technology (General) TA Engineering (General). Civil engineering (General)
Online Access:	http://umpir.ump.edu.my/id/eprint/12367/ http://umpir.ump.edu.my/id/eprint/12367/ http://umpir.ump.edu.my/id/eprint/12367/ http://umpir.ump.edu.my/id/eprint/12367/1/Strength%20and%20microstructural%20properties%20of%20fly%20ash%20based%20geopolymer%20concrete%20containing%20high-calcium%20and%20water-absorptive%20aggregate.pdf

id	ump-12367
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spelling	ump-123672018-02-19T07:20:36Z http://umpir.ump.edu.my/id/eprint/12367/ Strength and Microstructural Properties of Fly Ash Based Geopolymer Concrete Containing High-Calcium and Water Absorptive Aggregate Rahimah, Embong Kusbiantoro, Andri Nasir, Shaﬁq Muhd Fadhil, Nuruddin T Technology (General) TA Engineering (General). Civil engineering (General) In this research, performance of limestone and oil palm shell (OPS) as the alternative aggregates in fly ash based geopolymer concrete was evaluated based on the fresh and hardened concrete test. Fly ash and oil palm shell were studied due to their abundant availability as industrial and agricultural waste. Experimental works were conducted by replacing the portion of coarse and fine aggregate in concrete with limestone and oil palm shell in various percentages. Evaluation of its performance was done based on slump, compressive strength, and porosity test. Microstructure analysis was added via Scanning Electron Microscope (SEM) and Energy Dispersive X-Ray (EDX) test to support the generated hypothesis. From the fresh properties test, the increasing amount of limestone and OPS have shortened the setting time of fresh geopolymer concrete, even though they presented small variations in the slump's height and diameter results. The availability of Calcium Aluminate Silicate Hydrate (C–A–S–H) structure in limestone based specimen and higher polycondensation rate due to optimum water content in OPS based specimens have stimulated the rapid production of geopolymer gel and improved the strength performance of geopolymer concrete in ambient curing condition. Moderate water absorption from OPS fibers and additional dissolution of Al and Si elements due to formation of C–A–S–H gels from limestone inclusion have presented 10% OPS and 25% limestone as the optimum replacement to river sand and coarse granite aggregate, respectively. In ambient curing, 25% limestone presented a 35.23% higher strength while 10% OPS had 11.01% higher strength than control. An escalation to the curing temperature reduced the efficiency of both aggregates, where only 25% limestone was able to produce specimen with 2.34% higher strength than control A supportive analysis from SEM and EDX has also revealed the existence of poly(sialate), poly(sialate-siloxo), poly(sialate-disiloxo) and sialate link in the geopolymer matrix. From this research, the applications of limestone and oil palm shell in geopolymer concrete have presented a nurturing result, particularly as the alternative aggregates in ambient-cured application. Elsevier 2016 Article PeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/12367/1/Strength%20and%20microstructural%20properties%20of%20fly%20ash%20based%20geopolymer%20concrete%20containing%20high-calcium%20and%20water-absorptive%20aggregate.pdf Rahimah, Embong and Kusbiantoro, Andri and Nasir, Shaﬁq and Muhd Fadhil, Nuruddin (2016) Strength and Microstructural Properties of Fly Ash Based Geopolymer Concrete Containing High-Calcium and Water Absorptive Aggregate. Journal of Cleaner Production, 112 (1). pp. 816-822. ISSN 0959-6526 (print), 1879-1786 (online) http://dx.doi.org/10.1016/j.jclepro.2015.06.058 doi:10.1016/j.jclepro.2015.06.058
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	T Technology (General) TA Engineering (General). Civil engineering (General)
spellingShingle	T Technology (General) TA Engineering (General). Civil engineering (General) Rahimah, Embong Kusbiantoro, Andri Nasir, Shaﬁq Muhd Fadhil, Nuruddin Strength and Microstructural Properties of Fly Ash Based Geopolymer Concrete Containing High-Calcium and Water Absorptive Aggregate
description	In this research, performance of limestone and oil palm shell (OPS) as the alternative aggregates in fly ash based geopolymer concrete was evaluated based on the fresh and hardened concrete test. Fly ash and oil palm shell were studied due to their abundant availability as industrial and agricultural waste. Experimental works were conducted by replacing the portion of coarse and fine aggregate in concrete with limestone and oil palm shell in various percentages. Evaluation of its performance was done based on slump, compressive strength, and porosity test. Microstructure analysis was added via Scanning Electron Microscope (SEM) and Energy Dispersive X-Ray (EDX) test to support the generated hypothesis. From the fresh properties test, the increasing amount of limestone and OPS have shortened the setting time of fresh geopolymer concrete, even though they presented small variations in the slump's height and diameter results. The availability of Calcium Aluminate Silicate Hydrate (C–A–S–H) structure in limestone based specimen and higher polycondensation rate due to optimum water content in OPS based specimens have stimulated the rapid production of geopolymer gel and improved the strength performance of geopolymer concrete in ambient curing condition. Moderate water absorption from OPS fibers and additional dissolution of Al and Si elements due to formation of C–A–S–H gels from limestone inclusion have presented 10% OPS and 25% limestone as the optimum replacement to river sand and coarse granite aggregate, respectively. In ambient curing, 25% limestone presented a 35.23% higher strength while 10% OPS had 11.01% higher strength than control. An escalation to the curing temperature reduced the efficiency of both aggregates, where only 25% limestone was able to produce specimen with 2.34% higher strength than control A supportive analysis from SEM and EDX has also revealed the existence of poly(sialate), poly(sialate-siloxo), poly(sialate-disiloxo) and sialate link in the geopolymer matrix. From this research, the applications of limestone and oil palm shell in geopolymer concrete have presented a nurturing result, particularly as the alternative aggregates in ambient-cured application.
format	Article
author	Rahimah, Embong Kusbiantoro, Andri Nasir, Shaﬁq Muhd Fadhil, Nuruddin
author_facet	Rahimah, Embong Kusbiantoro, Andri Nasir, Shaﬁq Muhd Fadhil, Nuruddin
author_sort	Rahimah, Embong
title	Strength and Microstructural Properties of Fly Ash Based Geopolymer Concrete Containing High-Calcium and Water Absorptive Aggregate
title_short	Strength and Microstructural Properties of Fly Ash Based Geopolymer Concrete Containing High-Calcium and Water Absorptive Aggregate
title_full	Strength and Microstructural Properties of Fly Ash Based Geopolymer Concrete Containing High-Calcium and Water Absorptive Aggregate
title_fullStr	Strength and Microstructural Properties of Fly Ash Based Geopolymer Concrete Containing High-Calcium and Water Absorptive Aggregate
title_full_unstemmed	Strength and Microstructural Properties of Fly Ash Based Geopolymer Concrete Containing High-Calcium and Water Absorptive Aggregate
title_sort	strength and microstructural properties of fly ash based geopolymer concrete containing high-calcium and water absorptive aggregate
publisher	Elsevier
publishDate	2016
url	http://umpir.ump.edu.my/id/eprint/12367/ http://umpir.ump.edu.my/id/eprint/12367/ http://umpir.ump.edu.my/id/eprint/12367/ http://umpir.ump.edu.my/id/eprint/12367/1/Strength%20and%20microstructural%20properties%20of%20fly%20ash%20based%20geopolymer%20concrete%20containing%20high-calcium%20and%20water-absorptive%20aggregate.pdf
first_indexed	2023-09-18T22:13:57Z
last_indexed	2023-09-18T22:13:57Z
_version_	1777415212522012672

Strength and Microstructural Properties of Fly Ash Based Geopolymer Concrete Containing High-Calcium and Water Absorptive Aggregate

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