Influence of ureolytic bacteria (UB) on the engineering properties and microstructure behavior of interlocking compressed earth bricks (ICEB)

Interlocking Compressed Earth Brick (ICEB) are cement stabilized soil bricks that allow for dry stacked construction. This characteristic resulted to the quick process of building walls at the same time, it requires less skilled labour as the bricks are laid dry and can easily be locked into its pla...

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Main Author:	Migat Omer, Megat Mohamad Zamer
Format:	Thesis
Language:	English English English
Published:	2017
Subjects:	TA715-787 Earthwork Foundations
Online Access:	http://eprints.uthm.edu.my/794/1/24p%20MEGAT%20MOHAMAD%20ZAMER%20MIGAT%20OMER.pdf http://eprints.uthm.edu.my/794/2/MEGAT%20MOHAMAD%20ZAMER%20MIGAT%20OMER%20COPYRIGHT%20DECLARATION.pdf http://eprints.uthm.edu.my/794/3/MEGAT%20MOHAMAD%20ZAMER%20MIGAT%20OMER%20WATERMARK.pdf
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id	my-uthm-ep.794
record_format	uketd_dc
spelling	my-uthm-ep.7942021-08-30T08:04:43Z Influence of ureolytic bacteria (UB) on the engineering properties and microstructure behavior of interlocking compressed earth bricks (ICEB) 2017-12 Migat Omer, Megat Mohamad Zamer TA715-787 Earthwork. Foundations Interlocking Compressed Earth Brick (ICEB) are cement stabilized soil bricks that allow for dry stacked construction. This characteristic resulted to the quick process of building walls at the same time, it requires less skilled labour as the bricks are laid dry and can easily be locked into its place. However, there are still rooms for improving the interlocking bricks by increasing its durability. Many studies had been conducted in order to improve the durability of bricks using environmental friendly method. One of the methods is by adding a certain amount of bacteria into the bricks during its production. Bacteria in brick induced calcite precipitation (calcite crystals) to cover the voids continuously. Ureolytic Bacteria (UB) is used in this study as a partially replacement of limestone water by varying the percentage at 1% UB, 3% UB and 5% UB. Enrichment process is done at soil condition to ensure the survivability of UB in ICEB environment. This research also evaluates the effect of UB in improving the engineering properties of ICEB and analyze the microstructure and morphology of UB in ICEB. Dimensional, compressive strength, water absorption and carbonation tests are performed for engineering properties, whereas X-ray fluorescence (XRF), Scanning electron microscopy (SEM) and X-ray diffraction (XRD) are analyzed for microstructure testing. The production of ICEB is carried out at Iryas Inc. (M) Sdn Bhd Industry at Sedenak, Johor and all test are conducted at Universiti Tun Hussein Onn Malaysia (UTHM) laboratory. The results for the engineering properties and microstructure analysis are compared with the control sample. It had been shown that the addition of 5% UB in ICEB indicated positive results in improving the ICEB properties by 15.25% increment in strength, 14.72% reduction in initial water absorption, 14.68% reduction in water absorption and 15.89% reduction of carbonation depth as compared with the control sample. Precipitation of calcium carbonate (CaCO3) in form of calcite can be distinguished clearly in microstructure analysis. As a conclusion, addition of 5% UB in ICEB promoted the highest increment in compressive strength and the lowest reduction in water absorption as compared with the other UB percentages. 2017-12 Thesis http://eprints.uthm.edu.my/794/ http://eprints.uthm.edu.my/794/1/24p%20MEGAT%20MOHAMAD%20ZAMER%20MIGAT%20OMER.pdf text en public http://eprints.uthm.edu.my/794/2/MEGAT%20MOHAMAD%20ZAMER%20MIGAT%20OMER%20COPYRIGHT%20DECLARATION.pdf text en staffonly http://eprints.uthm.edu.my/794/3/MEGAT%20MOHAMAD%20ZAMER%20MIGAT%20OMER%20WATERMARK.pdf text en validuser mphil masters Universiti Tun Hussein Onn Malaysia Fakulti Kejuruteraan Awam dan Alam Bina
institution	Universiti Tun Hussein Onn Malaysia
collection	UTHM Institutional Repository
language	English English English
topic	TA715-787 Earthwork Foundations
spellingShingle	TA715-787 Earthwork Foundations Migat Omer, Megat Mohamad Zamer Influence of ureolytic bacteria (UB) on the engineering properties and microstructure behavior of interlocking compressed earth bricks (ICEB)
description	Interlocking Compressed Earth Brick (ICEB) are cement stabilized soil bricks that allow for dry stacked construction. This characteristic resulted to the quick process of building walls at the same time, it requires less skilled labour as the bricks are laid dry and can easily be locked into its place. However, there are still rooms for improving the interlocking bricks by increasing its durability. Many studies had been conducted in order to improve the durability of bricks using environmental friendly method. One of the methods is by adding a certain amount of bacteria into the bricks during its production. Bacteria in brick induced calcite precipitation (calcite crystals) to cover the voids continuously. Ureolytic Bacteria (UB) is used in this study as a partially replacement of limestone water by varying the percentage at 1% UB, 3% UB and 5% UB. Enrichment process is done at soil condition to ensure the survivability of UB in ICEB environment. This research also evaluates the effect of UB in improving the engineering properties of ICEB and analyze the microstructure and morphology of UB in ICEB. Dimensional, compressive strength, water absorption and carbonation tests are performed for engineering properties, whereas X-ray fluorescence (XRF), Scanning electron microscopy (SEM) and X-ray diffraction (XRD) are analyzed for microstructure testing. The production of ICEB is carried out at Iryas Inc. (M) Sdn Bhd Industry at Sedenak, Johor and all test are conducted at Universiti Tun Hussein Onn Malaysia (UTHM) laboratory. The results for the engineering properties and microstructure analysis are compared with the control sample. It had been shown that the addition of 5% UB in ICEB indicated positive results in improving the ICEB properties by 15.25% increment in strength, 14.72% reduction in initial water absorption, 14.68% reduction in water absorption and 15.89% reduction of carbonation depth as compared with the control sample. Precipitation of calcium carbonate (CaCO3) in form of calcite can be distinguished clearly in microstructure analysis. As a conclusion, addition of 5% UB in ICEB promoted the highest increment in compressive strength and the lowest reduction in water absorption as compared with the other UB percentages.
format	Thesis
qualification_name	Master of Philosophy (M.Phil.)
qualification_level	Master's degree
author	Migat Omer, Megat Mohamad Zamer
author_facet	Migat Omer, Megat Mohamad Zamer
author_sort	Migat Omer, Megat Mohamad Zamer
title	Influence of ureolytic bacteria (UB) on the engineering properties and microstructure behavior of interlocking compressed earth bricks (ICEB)
title_short	Influence of ureolytic bacteria (UB) on the engineering properties and microstructure behavior of interlocking compressed earth bricks (ICEB)
title_full	Influence of ureolytic bacteria (UB) on the engineering properties and microstructure behavior of interlocking compressed earth bricks (ICEB)
title_fullStr	Influence of ureolytic bacteria (UB) on the engineering properties and microstructure behavior of interlocking compressed earth bricks (ICEB)
title_full_unstemmed	Influence of ureolytic bacteria (UB) on the engineering properties and microstructure behavior of interlocking compressed earth bricks (ICEB)
title_sort	influence of ureolytic bacteria (ub) on the engineering properties and microstructure behavior of interlocking compressed earth bricks (iceb)
granting_institution	Universiti Tun Hussein Onn Malaysia
granting_department	Fakulti Kejuruteraan Awam dan Alam Bina
publishDate	2017
url	http://eprints.uthm.edu.my/794/1/24p%20MEGAT%20MOHAMAD%20ZAMER%20MIGAT%20OMER.pdf http://eprints.uthm.edu.my/794/2/MEGAT%20MOHAMAD%20ZAMER%20MIGAT%20OMER%20COPYRIGHT%20DECLARATION.pdf http://eprints.uthm.edu.my/794/3/MEGAT%20MOHAMAD%20ZAMER%20MIGAT%20OMER%20WATERMARK.pdf
_version_	1747830682917273600

Influence of ureolytic bacteria (UB) on the engineering properties and microstructure behavior of interlocking compressed earth bricks (ICEB)

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