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Shear resistance of rubber-ballast composites in simulated water and acid soaked conditions

Ballast is one of the main structures for the railway tracks. It can resist the lateral movement under dynamic loading transferred by the passing trains with repeatedly. Under some circumstances, ballast can suffer degradation or breakdown due to the repeated loading and maintenance. Ballast is easi...

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Main Authors: SM Johan, Siti Farhanah, Chan, Chee Ming
Format: Article
Language:English
Published: 2016
Subjects:
TF200-320 Railway construction
Online Access:http://eprints.uthm.edu.my/4429/1/AJ%202017%20%28166%29%20Shear%20resistance%20of%20rubber-ballast%20composites.pdf
http://eprints.uthm.edu.my/4429/
http://dx.doi.org/10.14716/ijtech.v7i5.3370
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spelling my.uthm.eprints.44292021-12-06T06:10:22Z http://eprints.uthm.edu.my/4429/ Shear resistance of rubber-ballast composites in simulated water and acid soaked conditions SM Johan, Siti Farhanah Chan, Chee Ming TF200-320 Railway construction Ballast is one of the main structures for the railway tracks. It can resist the lateral movement under dynamic loading transferred by the passing trains with repeatedly. Under some circumstances, ballast can suffer degradation or breakdown due to the repeated loading and maintenance. Ballast is easily exposed to the weather because it is laid on the track. Acid rain affects the performance of the railway track near the industrial and urban area. As a result, it starts to foul and the small chips from ballast filled the void, as well as reduce the shear strength of ballast particles. This situation can contribute into the increasing of maintenance frequency and costing. This paper examines the potential of rubber inclusions in increasing the shear resistance of rubber-ballast composites in simulated water and acid soaked conditions with several configuration. This lab-based exploratory work is only static load simulation in conventional shear box setup measuring 60 mm × 60 mm. The aggregates size is 10 times smaller than actual size of ballast. In order to identify the shear resistance deterioration of rubber-aggregates mixture under poor drainage conditions by soaked a batch of aggregates in water and acid solution for 2 weeks to simulate accelerated weathering effects. The shear resistance did not rise dramatically with the rubber reinforcement. This susceptible shear strain plots indicate ductile behaviour on the aggregates-rubber composites. This is evident by the linear rise of shear stress with strain up to approximately 10% for the control samples (CS) until it reaches a constant value. Note that all the specimens including CS are in a loose state during the testing because there were no tamping been applied on the samples. Overall the circular patch (CP) specimen was the most favourable than the other configurations. Both mechanisms contributed to the reduced overall subsistence, accompanied by an increase in the shear resistance. The inclusion of rubber elements apparently prevented the dilation of the granular material when approaching the shear failure and the reducing the settlement. 2016 Article PeerReviewed text en http://eprints.uthm.edu.my/4429/1/AJ%202017%20%28166%29%20Shear%20resistance%20of%20rubber-ballast%20composites.pdf SM Johan, Siti Farhanah and Chan, Chee Ming (2016) Shear resistance of rubber-ballast composites in simulated water and acid soaked conditions. International Journal of Technology, 5. pp. 741-747. ISSN 2086-9614 http://dx.doi.org/10.14716/ijtech.v7i5.3370
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
topic TF200-320 Railway construction
spellingShingle TF200-320 Railway construction
SM Johan, Siti Farhanah
Chan, Chee Ming
Shear resistance of rubber-ballast composites in simulated water and acid soaked conditions
description Ballast is one of the main structures for the railway tracks. It can resist the lateral movement under dynamic loading transferred by the passing trains with repeatedly. Under some circumstances, ballast can suffer degradation or breakdown due to the repeated loading and maintenance. Ballast is easily exposed to the weather because it is laid on the track. Acid rain affects the performance of the railway track near the industrial and urban area. As a result, it starts to foul and the small chips from ballast filled the void, as well as reduce the shear strength of ballast particles. This situation can contribute into the increasing of maintenance frequency and costing. This paper examines the potential of rubber inclusions in increasing the shear resistance of rubber-ballast composites in simulated water and acid soaked conditions with several configuration. This lab-based exploratory work is only static load simulation in conventional shear box setup measuring 60 mm × 60 mm. The aggregates size is 10 times smaller than actual size of ballast. In order to identify the shear resistance deterioration of rubber-aggregates mixture under poor drainage conditions by soaked a batch of aggregates in water and acid solution for 2 weeks to simulate accelerated weathering effects. The shear resistance did not rise dramatically with the rubber reinforcement. This susceptible shear strain plots indicate ductile behaviour on the aggregates-rubber composites. This is evident by the linear rise of shear stress with strain up to approximately 10% for the control samples (CS) until it reaches a constant value. Note that all the specimens including CS are in a loose state during the testing because there were no tamping been applied on the samples. Overall the circular patch (CP) specimen was the most favourable than the other configurations. Both mechanisms contributed to the reduced overall subsistence, accompanied by an increase in the shear resistance. The inclusion of rubber elements apparently prevented the dilation of the granular material when approaching the shear failure and the reducing the settlement.
format Article
author SM Johan, Siti Farhanah
Chan, Chee Ming
author_facet SM Johan, Siti Farhanah
Chan, Chee Ming
author_sort SM Johan, Siti Farhanah
title Shear resistance of rubber-ballast composites in simulated water and acid soaked conditions
title_short Shear resistance of rubber-ballast composites in simulated water and acid soaked conditions
title_full Shear resistance of rubber-ballast composites in simulated water and acid soaked conditions
title_fullStr Shear resistance of rubber-ballast composites in simulated water and acid soaked conditions
title_full_unstemmed Shear resistance of rubber-ballast composites in simulated water and acid soaked conditions
title_sort shear resistance of rubber-ballast composites in simulated water and acid soaked conditions
publishDate 2016
url http://eprints.uthm.edu.my/4429/1/AJ%202017%20%28166%29%20Shear%20resistance%20of%20rubber-ballast%20composites.pdf
http://eprints.uthm.edu.my/4429/
http://dx.doi.org/10.14716/ijtech.v7i5.3370
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score 13.211869

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