Durability of geopolymer mortars using agro-industrial waste

Geopolymer is a binding material produced from the reaction of silica and alumina (in a source material of geological origin or in by-product material), with alkaline solutions. The use of geopolymer as cement replacement material in concrete might be able to reduce the pollution due to the emission...

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Main Author:	Ariffin, Nur Farhayu
Format:	Thesis
Language:	English
Published:	2012
Subjects:	TA Engineering (General) Civil engineering (General)
Online Access:	http://eprints.utm.my/id/eprint/36983/1/NurFarhayuAriffinMFKA2012.pdf
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id	my-utm-ep.36983
record_format	uketd_dc
spelling	my-utm-ep.369832017-09-25T05:38:10Z Durability of geopolymer mortars using agro-industrial waste 2012-10 Ariffin, Nur Farhayu TA Engineering (General). Civil engineering (General) Geopolymer is a binding material produced from the reaction of silica and alumina (in a source material of geological origin or in by-product material), with alkaline solutions. The use of geopolymer as cement replacement material in concrete might be able to reduce the pollution due to the emission of carbon dioxide to the atmosphere generated from the production of Ordinary Portland Cement (OPC). This thesis presents the results of laboratory investigation on geopolymer mortar cubes in which the durability of specimens was studied. The cement replacement materials used were Palm Oil Fuel Ash (POFA) and Pulverized Fuel Ash (PFA), with a mass ratio of sand to blended ash of 3:1, while the alkaline solution was made of sodium silicate and sodium hydroxide with the mass ratio of 2.5:1 and has concentration of 14 Molar. In order to determine the optimum mix proportion at a specified compressive strength of normal mix using OPC, mortar cubes containing various ratios of POFA to PFA were tested with the target of using as much POFA as possible in the mixture. With the optimum mix proportion, that is 30:70, geopolymer mortar in the forms of 70x70x70 mm cubes were cured at room temperature of 28ºC for 28 days and heat cured at 90ºC for 24 hours, were tested for durability. The performances were measured in terms of water absorption, water permeability coefficient, drying shrinkage, sulphate resistance, acid resistance, chloride ion penetration resistance, dry-wet cyclic resistance and elevated temperature resistance. The evaluations were done through visual observation, measurement of mass change and residual compressive strength. The test result shows that the heat cured geopolymer mortars possess higher degree of durability compared to those using OPC. This suggests that geopolymer with correct proportion may be used as cement replacement material in the production of a more environment-friendly concrete. 2012-10 Thesis http://eprints.utm.my/id/eprint/36983/ http://eprints.utm.my/id/eprint/36983/1/NurFarhayuAriffinMFKA2012.pdf application/pdf en public masters Universiti Teknologi Malaysia, Faculty of Civil Engineering Faculty of Civil Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TA Engineering (General) Civil engineering (General)
spellingShingle	TA Engineering (General) Civil engineering (General) Ariffin, Nur Farhayu Durability of geopolymer mortars using agro-industrial waste
description	Geopolymer is a binding material produced from the reaction of silica and alumina (in a source material of geological origin or in by-product material), with alkaline solutions. The use of geopolymer as cement replacement material in concrete might be able to reduce the pollution due to the emission of carbon dioxide to the atmosphere generated from the production of Ordinary Portland Cement (OPC). This thesis presents the results of laboratory investigation on geopolymer mortar cubes in which the durability of specimens was studied. The cement replacement materials used were Palm Oil Fuel Ash (POFA) and Pulverized Fuel Ash (PFA), with a mass ratio of sand to blended ash of 3:1, while the alkaline solution was made of sodium silicate and sodium hydroxide with the mass ratio of 2.5:1 and has concentration of 14 Molar. In order to determine the optimum mix proportion at a specified compressive strength of normal mix using OPC, mortar cubes containing various ratios of POFA to PFA were tested with the target of using as much POFA as possible in the mixture. With the optimum mix proportion, that is 30:70, geopolymer mortar in the forms of 70x70x70 mm cubes were cured at room temperature of 28ºC for 28 days and heat cured at 90ºC for 24 hours, were tested for durability. The performances were measured in terms of water absorption, water permeability coefficient, drying shrinkage, sulphate resistance, acid resistance, chloride ion penetration resistance, dry-wet cyclic resistance and elevated temperature resistance. The evaluations were done through visual observation, measurement of mass change and residual compressive strength. The test result shows that the heat cured geopolymer mortars possess higher degree of durability compared to those using OPC. This suggests that geopolymer with correct proportion may be used as cement replacement material in the production of a more environment-friendly concrete.
format	Thesis
qualification_level	Master's degree
author	Ariffin, Nur Farhayu
author_facet	Ariffin, Nur Farhayu
author_sort	Ariffin, Nur Farhayu
title	Durability of geopolymer mortars using agro-industrial waste
title_short	Durability of geopolymer mortars using agro-industrial waste
title_full	Durability of geopolymer mortars using agro-industrial waste
title_fullStr	Durability of geopolymer mortars using agro-industrial waste
title_full_unstemmed	Durability of geopolymer mortars using agro-industrial waste
title_sort	durability of geopolymer mortars using agro-industrial waste
granting_institution	Universiti Teknologi Malaysia, Faculty of Civil Engineering
granting_department	Faculty of Civil Engineering
publishDate	2012
url	http://eprints.utm.my/id/eprint/36983/1/NurFarhayuAriffinMFKA2012.pdf
_version_	1747816487572209664

Durability of geopolymer mortars using agro-industrial waste

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