Effect Of Crumb Rubber Incorporation On The Behaviour Of Concrete Beam Subjected To Impact Load

Effect Of Crumb Rubber Incorporation On The Behaviour Of Concrete Beam Subjected To Impact Load

It is well known that concrete containing crumb rubber would enhance the elastic properties of concrete as well as ability to absorb energy. However, the actual flexural energy under impact load is still questionable and debatable. Moreover, the behavior of hybrid (rubberized top-plain bottom) concr...

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Main Author: Altayeb, Mustafa M. M.
Format: Thesis
Language:English
Published: 2013
Subjects:
TA1-2040 Engineering (General)
Civil engineering (General)
Online Access:http://eprints.usm.my/43846/1/Mustafa%20M.%20M.%20Altayeb24.pdf
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spelling my-usm-ep.438462019-04-12T05:26:18Z Effect Of Crumb Rubber Incorporation On The Behaviour Of Concrete Beam Subjected To Impact Load 2013 Altayeb, Mustafa M. M. TA1-2040 Engineering (General). Civil engineering (General) It is well known that concrete containing crumb rubber would enhance the elastic properties of concrete as well as ability to absorb energy. However, the actual flexural energy under impact load is still questionable and debatable. Moreover, the behavior of hybrid (rubberized top-plain bottom) concrete structures under impact or static load conditions are yet to be investigated. In this study, experimental and nonlinear dynamic analysis of rubberized concrete under impact load was investigated. Rubberized concrete samples were prepared by partial substitution (5%, 10% and 20 % replacements by volume) of sand or cement by two size of crumb or powder rubber respectively, and tested under impact three-point bending load, as well as static load. Three types of specimens namely, plain concrete, rubberized concrete, and double layer concrete were loaded to failure in a drop-weight impact machine by subjecting to 20N weight from a height of 300mm, and another three similar specimens were used for the static load test. In both tests, the load-deflection and fracture energy of each specimen were investigated. Finite-element simulations were also performed to study the dynamic behaviours of the samples, by using LUSAS V.14 software. The concrete beam was modeled to be built with eight node hexahedron elements and elasto-plastic material was used to model both plain and rubberized concrete structures. Explicit nonlinear dynamic scheme was used to determine the deflection increments for each time step.In general the result was noticed that, the impact loads increased with the increase in the percentage of rubber. 2013 Thesis http://eprints.usm.my/43846/ http://eprints.usm.my/43846/1/Mustafa%20M.%20M.%20Altayeb24.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 TA1-2040 Engineering (General)
Civil engineering (General)
spellingShingle TA1-2040 Engineering (General)
Civil engineering (General)
Altayeb, Mustafa M. M.
Effect Of Crumb Rubber Incorporation On The Behaviour Of Concrete Beam Subjected To Impact Load
description It is well known that concrete containing crumb rubber would enhance the elastic properties of concrete as well as ability to absorb energy. However, the actual flexural energy under impact load is still questionable and debatable. Moreover, the behavior of hybrid (rubberized top-plain bottom) concrete structures under impact or static load conditions are yet to be investigated. In this study, experimental and nonlinear dynamic analysis of rubberized concrete under impact load was investigated. Rubberized concrete samples were prepared by partial substitution (5%, 10% and 20 % replacements by volume) of sand or cement by two size of crumb or powder rubber respectively, and tested under impact three-point bending load, as well as static load. Three types of specimens namely, plain concrete, rubberized concrete, and double layer concrete were loaded to failure in a drop-weight impact machine by subjecting to 20N weight from a height of 300mm, and another three similar specimens were used for the static load test. In both tests, the load-deflection and fracture energy of each specimen were investigated. Finite-element simulations were also performed to study the dynamic behaviours of the samples, by using LUSAS V.14 software. The concrete beam was modeled to be built with eight node hexahedron elements and elasto-plastic material was used to model both plain and rubberized concrete structures. Explicit nonlinear dynamic scheme was used to determine the deflection increments for each time step.In general the result was noticed that, the impact loads increased with the increase in the percentage of rubber.
format Thesis
qualification_name Doctor of Philosophy (PhD.)
qualification_level Doctorate
author Altayeb, Mustafa M. M.
author_facet Altayeb, Mustafa M. M.
author_sort Altayeb, Mustafa M. M.
title Effect Of Crumb Rubber Incorporation On The Behaviour Of Concrete Beam Subjected To Impact Load
title_short Effect Of Crumb Rubber Incorporation On The Behaviour Of Concrete Beam Subjected To Impact Load
title_full Effect Of Crumb Rubber Incorporation On The Behaviour Of Concrete Beam Subjected To Impact Load
title_fullStr Effect Of Crumb Rubber Incorporation On The Behaviour Of Concrete Beam Subjected To Impact Load
title_full_unstemmed Effect Of Crumb Rubber Incorporation On The Behaviour Of Concrete Beam Subjected To Impact Load
title_sort effect of crumb rubber incorporation on the behaviour of concrete beam subjected to impact load
granting_institution Universiti Sains Malaysia
granting_department Pusat Pengajian Kejuruteraan Awam
publishDate 2013
url http://eprints.usm.my/43846/1/Mustafa%20M.%20M.%20Altayeb24.pdf
_version_ 1747821289810165760

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