The Effect Of Crumb Rubber Fine Aggregate Replacements On The Flexural Performance Of Fibre Reinforced Concrete Beams

It is well known that crumb rubber when incorporated in concrete has shown an improvement in elastic properties which actually enhance the energy absorption. However, the static responses of fibre at different aspect ratios incorporated with crumb rubber aggregate in a double layer are yet to be inv...

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Main Author:	Alasmari, Hasan
Format:	Thesis
Language:	English
Published:	2019
Subjects:	T Technology
Online Access:	http://eprints.usm.my/48544/1/The%20Effect%20Of%20Crumb%20Rubber%20Fine%20Aggregate%20Replacements%20On%20The%20Flexural%20Performance%20Of%20Fibre%20Reinforced%20Concrete%20Beams.pdf
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id	my-usm-ep.48544
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spelling	my-usm-ep.485442021-11-17T03:42:10Z The Effect Of Crumb Rubber Fine Aggregate Replacements On The Flexural Performance Of Fibre Reinforced Concrete Beams 2019-11-01 Alasmari, Hasan T Technology TA1-2040 Engineering (General). Civil engineering (General) It is well known that crumb rubber when incorporated in concrete has shown an improvement in elastic properties which actually enhance the energy absorption. However, the static responses of fibre at different aspect ratios incorporated with crumb rubber aggregate in a double layer are yet to be investigated. This study investigates the effect of crumb rubber aggregates with and without steel fibres on the flexural behaviour of layered and non-layered reinforcement concrete beams on a full scale. Rubberized concrete of layered and non-layered specimens were prepared by partial replacement of 10%, 12.5%, and 15% of sand aggregate volumes. Fibrous concrete were prepared from different types of aspect ratios of steel fibres (80 and 60) with different lengths for hooked-end and micro copper coated steel fibres at a 0.5% of the volume fractions. The layered specimens were constructed by placing rubberized concrete at the top and both layers, whilst the bottoms were dedicated to fibrous concrete. The non-layered specimens were prepared using a combination of rubberized and fibrous concrete subjected to their aspect ratios. The static responses were evaluated in terms of their fresh properties and beam characteristics’ behaviour. The findings revealed that the layering enhanced the mechanical properties’ performances compared to the non-layered samples. Increasing the aspect ratios of the steel fibres with inclusion of the crumb rubber aggregate led to increase in flexural strength and stiffness of the beams, whilst the lower aspect increases the toughness, ultimate deflection, ductility index and strain. Furthermore, the newly developed layered beams helped for further cracking control and enhanced the failure patterns. Overall, the results have shown promising performance in the layered form whether in beams or standard specimens. 2019-11 Thesis http://eprints.usm.my/48544/ http://eprints.usm.my/48544/1/The%20Effect%20Of%20Crumb%20Rubber%20Fine%20Aggregate%20Replacements%20On%20The%20Flexural%20Performance%20Of%20Fibre%20Reinforced%20Concrete%20Beams.pdf application/pdf en public phd doctoral Universiti Sains Malaysia Pusat Pengajian Kejuruteraan Awam
institution	Universiti Sains Malaysia
collection	USM Institutional Repository
language	English
topic	T Technology T Technology
spellingShingle	T Technology T Technology Alasmari, Hasan The Effect Of Crumb Rubber Fine Aggregate Replacements On The Flexural Performance Of Fibre Reinforced Concrete Beams
description	It is well known that crumb rubber when incorporated in concrete has shown an improvement in elastic properties which actually enhance the energy absorption. However, the static responses of fibre at different aspect ratios incorporated with crumb rubber aggregate in a double layer are yet to be investigated. This study investigates the effect of crumb rubber aggregates with and without steel fibres on the flexural behaviour of layered and non-layered reinforcement concrete beams on a full scale. Rubberized concrete of layered and non-layered specimens were prepared by partial replacement of 10%, 12.5%, and 15% of sand aggregate volumes. Fibrous concrete were prepared from different types of aspect ratios of steel fibres (80 and 60) with different lengths for hooked-end and micro copper coated steel fibres at a 0.5% of the volume fractions. The layered specimens were constructed by placing rubberized concrete at the top and both layers, whilst the bottoms were dedicated to fibrous concrete. The non-layered specimens were prepared using a combination of rubberized and fibrous concrete subjected to their aspect ratios. The static responses were evaluated in terms of their fresh properties and beam characteristics’ behaviour. The findings revealed that the layering enhanced the mechanical properties’ performances compared to the non-layered samples. Increasing the aspect ratios of the steel fibres with inclusion of the crumb rubber aggregate led to increase in flexural strength and stiffness of the beams, whilst the lower aspect increases the toughness, ultimate deflection, ductility index and strain. Furthermore, the newly developed layered beams helped for further cracking control and enhanced the failure patterns. Overall, the results have shown promising performance in the layered form whether in beams or standard specimens.
format	Thesis
qualification_name	Doctor of Philosophy (PhD.)
qualification_level	Doctorate
author	Alasmari, Hasan
author_facet	Alasmari, Hasan
author_sort	Alasmari, Hasan
title	The Effect Of Crumb Rubber Fine Aggregate Replacements On The Flexural Performance Of Fibre Reinforced Concrete Beams
title_short	The Effect Of Crumb Rubber Fine Aggregate Replacements On The Flexural Performance Of Fibre Reinforced Concrete Beams
title_full	The Effect Of Crumb Rubber Fine Aggregate Replacements On The Flexural Performance Of Fibre Reinforced Concrete Beams
title_fullStr	The Effect Of Crumb Rubber Fine Aggregate Replacements On The Flexural Performance Of Fibre Reinforced Concrete Beams
title_full_unstemmed	The Effect Of Crumb Rubber Fine Aggregate Replacements On The Flexural Performance Of Fibre Reinforced Concrete Beams
title_sort	effect of crumb rubber fine aggregate replacements on the flexural performance of fibre reinforced concrete beams
granting_institution	Universiti Sains Malaysia
granting_department	Pusat Pengajian Kejuruteraan Awam
publishDate	2019
url	http://eprints.usm.my/48544/1/The%20Effect%20Of%20Crumb%20Rubber%20Fine%20Aggregate%20Replacements%20On%20The%20Flexural%20Performance%20Of%20Fibre%20Reinforced%20Concrete%20Beams.pdf
_version_	1747821943795482624

The Effect Of Crumb Rubber Fine Aggregate Replacements On The Flexural Performance Of Fibre Reinforced Concrete Beams

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