Production of fly ash-based geopolymer bricks through geopolymerization process

Utilization of fly ash as a raw material for geopolymer brick production seems to be a logical solution that allows for the conservation of natural resources, abates further pollution and preserves the environment. Fly ash-based geopolymer have been studied by several researchers worldwide for se...

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Main Author:	Wan Mastura, Wan Ibrahim
Format:	Thesis
Language:	English
Subjects:	Fly ash (FA) Geopolymer Brick Geopolymerization
Online Access:	http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/33150/1/p%201-24.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/33150/2/Full%20text.pdf
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id	my-unimap-33150
record_format	uketd_dc
spelling	my-unimap-331502014-03-27T02:56:41Z Production of fly ash-based geopolymer bricks through geopolymerization process Wan Mastura, Wan Ibrahim Utilization of fly ash as a raw material for geopolymer brick production seems to be a logical solution that allows for the conservation of natural resources, abates further pollution and preserves the environment. Fly ash-based geopolymer have been studied by several researchers worldwide for several decades due to their excellent mechanical properties. Geopolymer is a type of amorphous alumino-silicate material which can be synthesized by polycondensation reaction of geopolymeric materials, and alkali solutions. This study has been conducted to produce fly ash-based geopolymer bricks by means of pressure forming without firing procedure and low energy consumptions. The experiments were conducted on fly ash-based geopolymer bricks by varying the ratio of fly ash-to-sand (1:2 - 1:5, by mass of ratio), curing time (1 - 24 hours) and curing temperature (room temperature - 80°C). Compressive strength, water absorption, dimensional test and density analysis was set as the mechanical properties to be tested on the fly ash-based geopolymer bricks. The compression test and water absorption test were measured at 1, 3, 7, 28 and 60 days. Results of the investigation indicated that there was decrease in compressive strength when the ratio of fly ash-to-sand increase. However, the strength was increased with increase in curing time and curing temperature. Compressive strength up to 20.3 MPa was obtained with curing at 70 °C for a period of 24 hours at 60 days of ageing. The density of geopolymer bricks ranged between 1800 Kg/m3 to 1950 Kg/m3. The microstructural properties of fly ash-based geopolymer bricks were investigated by using XRD and SEM analysis. Universiti Malaysia Perlis (UniMAP) 2013 Thesis en http://dspace.unimap.edu.my:80/dspace/handle/123456789/33150 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/33150/1/p%201-24.pdf b73147a455b7e58151bb1e07ad3a7464 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/33150/2/Full%20text.pdf 760f0a615942436e5b9fa3fac7b06c12 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/33150/3/license.txt 8a4605be74aa9ea9d79846c1fba20a33 Fly ash (FA) Geopolymer Brick Geopolymerization School of Materials Engineering
institution	Universiti Malaysia Perlis
collection	UniMAP Institutional Repository
language	English
topic	Fly ash (FA) Geopolymer Brick Geopolymerization
spellingShingle	Fly ash (FA) Geopolymer Brick Geopolymerization Wan Mastura, Wan Ibrahim Production of fly ash-based geopolymer bricks through geopolymerization process
description	Utilization of fly ash as a raw material for geopolymer brick production seems to be a logical solution that allows for the conservation of natural resources, abates further pollution and preserves the environment. Fly ash-based geopolymer have been studied by several researchers worldwide for several decades due to their excellent mechanical properties. Geopolymer is a type of amorphous alumino-silicate material which can be synthesized by polycondensation reaction of geopolymeric materials, and alkali solutions. This study has been conducted to produce fly ash-based geopolymer bricks by means of pressure forming without firing procedure and low energy consumptions. The experiments were conducted on fly ash-based geopolymer bricks by varying the ratio of fly ash-to-sand (1:2 - 1:5, by mass of ratio), curing time (1 - 24 hours) and curing temperature (room temperature - 80°C). Compressive strength, water absorption, dimensional test and density analysis was set as the mechanical properties to be tested on the fly ash-based geopolymer bricks. The compression test and water absorption test were measured at 1, 3, 7, 28 and 60 days. Results of the investigation indicated that there was decrease in compressive strength when the ratio of fly ash-to-sand increase. However, the strength was increased with increase in curing time and curing temperature. Compressive strength up to 20.3 MPa was obtained with curing at 70 °C for a period of 24 hours at 60 days of ageing. The density of geopolymer bricks ranged between 1800 Kg/m3 to 1950 Kg/m3. The microstructural properties of fly ash-based geopolymer bricks were investigated by using XRD and SEM analysis.
format	Thesis
author	Wan Mastura, Wan Ibrahim
author_facet	Wan Mastura, Wan Ibrahim
author_sort	Wan Mastura, Wan Ibrahim
title	Production of fly ash-based geopolymer bricks through geopolymerization process
title_short	Production of fly ash-based geopolymer bricks through geopolymerization process
title_full	Production of fly ash-based geopolymer bricks through geopolymerization process
title_fullStr	Production of fly ash-based geopolymer bricks through geopolymerization process
title_full_unstemmed	Production of fly ash-based geopolymer bricks through geopolymerization process
title_sort	production of fly ash-based geopolymer bricks through geopolymerization process
granting_institution	Universiti Malaysia Perlis (UniMAP)
granting_department	School of Materials Engineering
url	http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/33150/1/p%201-24.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/33150/2/Full%20text.pdf
_version_	1747836804599382016

Production of fly ash-based geopolymer bricks through geopolymerization process

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