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Mechanical, durability and damping properties for optimum rubberised concrete performance

Waste tyres pose significant health and environmental concerns if there are not recycled or appropriately discarded. Partial replacement of natural aggregate with waste tyres in the concrete mixture has been proven to be more economical and sustainable. Many researchers have study on mechanical and...

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Main Author: Senin, Mohamad Syamir
Format: Thesis
Language:English
English
English
Published: 2022
Subjects:
TJ Mechanical engineering and machinery
Online Access:http://eprints.uthm.edu.my/8436/1/24p%20MOHAMAD%20SYAMIR%20SENIN.pdf
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http://eprints.uthm.edu.my/8436/3/MOHAMAD%20SYAMIR%20SENIN%20WATERMARK.pdf
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spelling my.uthm.eprints.84362023-02-26T07:28:20Z http://eprints.uthm.edu.my/8436/ Mechanical, durability and damping properties for optimum rubberised concrete performance Senin, Mohamad Syamir TJ Mechanical engineering and machinery Waste tyres pose significant health and environmental concerns if there are not recycled or appropriately discarded. Partial replacement of natural aggregate with waste tyres in the concrete mixture has been proven to be more economical and sustainable. Many researchers have study on mechanical and durability properties of rubberised concrete. However, there are lack of study on damping properties of rubberised concrete. Previous study has shown that incorporating rubber in concrete mix caused significant reduction on mechanical and durability properties of rubberised concrete and thus discourage its commercialisation. Large rubber particle and high percentage of rubber replacement causes substantial reduction on mechanical and durability properties of rubberised concrete. The goal of this research is to investigate the mechanical, durability and damping properties by using small rubber particles, namely rubber ash and rubber crumb, to partially replace sand in concrete at low percentage namely 3%, 5%, 7% and 9%. The material properties of sand, rubber ash and rubber crumb, namely: (1) bulk density; (2) specific gravity; (3) particle size distribution; (4) morphology; and (5) chemical composition, are determined by using five different tests. Further eight tests were conducted to determine the engineering properties of the concrete mix with rubber ash or rubber crumb, namely: (1) workability; (2) bulk density; (3) compressive strength; (4) flexural strength; (5) splitting tensile strength; (6) modulus of elasticity; (7) water absorption; and (8) water permeability. Damping properties of the concrete mix with rubber ash or rubber crumb, namely: (1) frequency; (2) mode shape; and (3) damping ratios, are determined by using impact hammer test. The mechanical, durability and damping properties of rubber ash concrete and rubber crumb concrete are compared with the control concrete. The results show that the rubber ash and rubber crumb are suitable to partially replace sand in the concrete mix. Both the mechanical, durability and damping properties have improved by up to 15%. This study found that the optimum content for rubber ash to replace sand in concrete mix is found to be at 5%, whilst the rubber crumb is at 3% for achieving improved engineering properties. The optimised rubber ash or rubber crumb to replace sand in concrete mix are 3% and 9%, respectively, for achieving improved damping properties. The experimental results of damping properties for rubber ash concrete and rubber crumb concrete are validated by computational modelling, and thus the damping properties of any rubberised concrete structure within the range of this study can be determine by computational modelling. The results of this study indicate the huge potential of the waste rubber to be recycled and used to partially replace sand in concrete mix, and hence reduce dumped tyre waste as well as reduce the use of natural resources (sand). 2022-02 Thesis NonPeerReviewed text en http://eprints.uthm.edu.my/8436/1/24p%20MOHAMAD%20SYAMIR%20SENIN.pdf text en http://eprints.uthm.edu.my/8436/2/MOHAMAD%20SYAMIR%20SENIN%20COPYRIGHT%20DECLARATION.pdf text en http://eprints.uthm.edu.my/8436/3/MOHAMAD%20SYAMIR%20SENIN%20WATERMARK.pdf Senin, Mohamad Syamir (2022) Mechanical, durability and damping properties for optimum rubberised concrete performance. Doctoral thesis, Universiti Tun Hussein Onn Malaysia.
institution Universiti Tun Hussein Onn Malaysia
building UTHM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Tun Hussein Onn Malaysia
content_source UTHM Institutional Repository
url_provider http://eprints.uthm.edu.my/
language English
English
English
topic TJ Mechanical engineering and machinery
spellingShingle TJ Mechanical engineering and machinery
Senin, Mohamad Syamir
Mechanical, durability and damping properties for optimum rubberised concrete performance
description Waste tyres pose significant health and environmental concerns if there are not recycled or appropriately discarded. Partial replacement of natural aggregate with waste tyres in the concrete mixture has been proven to be more economical and sustainable. Many researchers have study on mechanical and durability properties of rubberised concrete. However, there are lack of study on damping properties of rubberised concrete. Previous study has shown that incorporating rubber in concrete mix caused significant reduction on mechanical and durability properties of rubberised concrete and thus discourage its commercialisation. Large rubber particle and high percentage of rubber replacement causes substantial reduction on mechanical and durability properties of rubberised concrete. The goal of this research is to investigate the mechanical, durability and damping properties by using small rubber particles, namely rubber ash and rubber crumb, to partially replace sand in concrete at low percentage namely 3%, 5%, 7% and 9%. The material properties of sand, rubber ash and rubber crumb, namely: (1) bulk density; (2) specific gravity; (3) particle size distribution; (4) morphology; and (5) chemical composition, are determined by using five different tests. Further eight tests were conducted to determine the engineering properties of the concrete mix with rubber ash or rubber crumb, namely: (1) workability; (2) bulk density; (3) compressive strength; (4) flexural strength; (5) splitting tensile strength; (6) modulus of elasticity; (7) water absorption; and (8) water permeability. Damping properties of the concrete mix with rubber ash or rubber crumb, namely: (1) frequency; (2) mode shape; and (3) damping ratios, are determined by using impact hammer test. The mechanical, durability and damping properties of rubber ash concrete and rubber crumb concrete are compared with the control concrete. The results show that the rubber ash and rubber crumb are suitable to partially replace sand in the concrete mix. Both the mechanical, durability and damping properties have improved by up to 15%. This study found that the optimum content for rubber ash to replace sand in concrete mix is found to be at 5%, whilst the rubber crumb is at 3% for achieving improved engineering properties. The optimised rubber ash or rubber crumb to replace sand in concrete mix are 3% and 9%, respectively, for achieving improved damping properties. The experimental results of damping properties for rubber ash concrete and rubber crumb concrete are validated by computational modelling, and thus the damping properties of any rubberised concrete structure within the range of this study can be determine by computational modelling. The results of this study indicate the huge potential of the waste rubber to be recycled and used to partially replace sand in concrete mix, and hence reduce dumped tyre waste as well as reduce the use of natural resources (sand).
format Thesis
author Senin, Mohamad Syamir
author_facet Senin, Mohamad Syamir
author_sort Senin, Mohamad Syamir
title Mechanical, durability and damping properties for optimum rubberised concrete performance
title_short Mechanical, durability and damping properties for optimum rubberised concrete performance
title_full Mechanical, durability and damping properties for optimum rubberised concrete performance
title_fullStr Mechanical, durability and damping properties for optimum rubberised concrete performance
title_full_unstemmed Mechanical, durability and damping properties for optimum rubberised concrete performance
title_sort mechanical, durability and damping properties for optimum rubberised concrete performance
publishDate 2022
url http://eprints.uthm.edu.my/8436/1/24p%20MOHAMAD%20SYAMIR%20SENIN.pdf
http://eprints.uthm.edu.my/8436/2/MOHAMAD%20SYAMIR%20SENIN%20COPYRIGHT%20DECLARATION.pdf
http://eprints.uthm.edu.my/8436/3/MOHAMAD%20SYAMIR%20SENIN%20WATERMARK.pdf
http://eprints.uthm.edu.my/8436/
_version_ 1758952407782391808
score 13.211869

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