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SHEAR RESISTANCE IMPROVEMENT OF OIL-CONTAMINATED BALLAST LAYER WITH RUBBER SHRED INCLUSIONS

Railway ballast, which form an integral part of rail tracks, is highly susceptible to subsistence due to both vibration transmitted by the passing trains, as well as the breakage of ballasts with repeated impact. The resulting subsistence necessitates regular monitoring and maintenance, involving co...

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Main Authors: Chan, Chee Ming, Siti Farhanah, SM Johan
Format: Article
Language:English
Published: International Journal of GEOMATE 2016
Subjects:
T Technology (General)
TF Railroad engineering and operation
Online Access:http://ir.unimas.my/id/eprint/45578/1/Geomate2016.pdf
http://ir.unimas.my/id/eprint/45578/
https://geomatejournal.com/geomate/article/view/2762
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spelling my.unimas.ir.455782024-08-12T02:11:30Z http://ir.unimas.my/id/eprint/45578/ SHEAR RESISTANCE IMPROVEMENT OF OIL-CONTAMINATED BALLAST LAYER WITH RUBBER SHRED INCLUSIONS Chan, Chee Ming Siti Farhanah, SM Johan T Technology (General) TF Railroad engineering and operation Railway ballast, which form an integral part of rail tracks, is highly susceptible to subsistence due to both vibration transmitted by the passing trains, as well as the breakage of ballasts with repeated impact. The resulting subsistence necessitates regular monitoring and maintenance, involving cost- and timeconsuming remedial actions, such as stone-blowing and ballast renewal. Measures to minimize the wear and tear effect are therefore desirable to prolong the lifespan of the ballast layer. It is even more critical when the ballast is contaminated with oil and grease from braking wheels and leakages. This paper describes the inclusion of rubber shreds (≤10 mm in length, 1.5 mm thick) derived from the inner tubes of motorcycle tyres in oil-contaminated ballast layer for shear resistance improvement. The tests are mainly carried out in a standard direct shear test setup, i.e. shear box measuring 60 mm x 60 mm. Granitic stones of suitable sizes were sieved and used as representative samples of typical ballast. The samples were soaked in lubricant oil for 14 days to simulate the contamination. The direct shear test results indicated rubber shreds inclusion could effectively improve the shear resistance of ballast and expedient in deformation control with increased ductility of the composites. This could potentially improve absorption of impact, hence reduction of breakages of the ballasts. Clearly both mechanisms contribute to the overall reduced subsistence, accompanied by an increase in the shear resistance. However, further investigations in a dynamic test setup are necessary for verifications prior to field implementation. International Journal of GEOMATE 2016 Article PeerReviewed text en http://ir.unimas.my/id/eprint/45578/1/Geomate2016.pdf Chan, Chee Ming and Siti Farhanah, SM Johan (2016) SHEAR RESISTANCE IMPROVEMENT OF OIL-CONTAMINATED BALLAST LAYER WITH RUBBER SHRED INCLUSIONS. International Journal of GEOMATE, 11 (27). pp. 2723-2729. ISSN 2186-2990 https://geomatejournal.com/geomate/article/view/2762 doi:10.14716/ijtech.v7i5.3370
institution Universiti Malaysia Sarawak
building Centre for Academic Information Services (CAIS)
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Sarawak
content_source UNIMAS Institutional Repository
url_provider http://ir.unimas.my/
language English
topic T Technology (General)
TF Railroad engineering and operation
spellingShingle T Technology (General)
TF Railroad engineering and operation
Chan, Chee Ming
Siti Farhanah, SM Johan
SHEAR RESISTANCE IMPROVEMENT OF OIL-CONTAMINATED BALLAST LAYER WITH RUBBER SHRED INCLUSIONS
description Railway ballast, which form an integral part of rail tracks, is highly susceptible to subsistence due to both vibration transmitted by the passing trains, as well as the breakage of ballasts with repeated impact. The resulting subsistence necessitates regular monitoring and maintenance, involving cost- and timeconsuming remedial actions, such as stone-blowing and ballast renewal. Measures to minimize the wear and tear effect are therefore desirable to prolong the lifespan of the ballast layer. It is even more critical when the ballast is contaminated with oil and grease from braking wheels and leakages. This paper describes the inclusion of rubber shreds (≤10 mm in length, 1.5 mm thick) derived from the inner tubes of motorcycle tyres in oil-contaminated ballast layer for shear resistance improvement. The tests are mainly carried out in a standard direct shear test setup, i.e. shear box measuring 60 mm x 60 mm. Granitic stones of suitable sizes were sieved and used as representative samples of typical ballast. The samples were soaked in lubricant oil for 14 days to simulate the contamination. The direct shear test results indicated rubber shreds inclusion could effectively improve the shear resistance of ballast and expedient in deformation control with increased ductility of the composites. This could potentially improve absorption of impact, hence reduction of breakages of the ballasts. Clearly both mechanisms contribute to the overall reduced subsistence, accompanied by an increase in the shear resistance. However, further investigations in a dynamic test setup are necessary for verifications prior to field implementation.
format Article
author Chan, Chee Ming
Siti Farhanah, SM Johan
author_facet Chan, Chee Ming
Siti Farhanah, SM Johan
author_sort Chan, Chee Ming
title SHEAR RESISTANCE IMPROVEMENT OF OIL-CONTAMINATED BALLAST LAYER WITH RUBBER SHRED INCLUSIONS
title_short SHEAR RESISTANCE IMPROVEMENT OF OIL-CONTAMINATED BALLAST LAYER WITH RUBBER SHRED INCLUSIONS
title_full SHEAR RESISTANCE IMPROVEMENT OF OIL-CONTAMINATED BALLAST LAYER WITH RUBBER SHRED INCLUSIONS
title_fullStr SHEAR RESISTANCE IMPROVEMENT OF OIL-CONTAMINATED BALLAST LAYER WITH RUBBER SHRED INCLUSIONS
title_full_unstemmed SHEAR RESISTANCE IMPROVEMENT OF OIL-CONTAMINATED BALLAST LAYER WITH RUBBER SHRED INCLUSIONS
title_sort shear resistance improvement of oil-contaminated ballast layer with rubber shred inclusions
publisher International Journal of GEOMATE
publishDate 2016
url http://ir.unimas.my/id/eprint/45578/1/Geomate2016.pdf
http://ir.unimas.my/id/eprint/45578/
https://geomatejournal.com/geomate/article/view/2762
_version_ 1808981500197076992
score 13.211869

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