Forensic study on rural road pavement failures along Parit Sumarto
Road deformation was occurred so prevalent on rural roads of Batu Pahat vicinity moreover when it's constructed on soft ground. This study presents the results of forensic investigation of a deterioration portion of the Parit Sumarto rural road. This road had been selected as represent of...
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| Format: | Thesis |
| Language: | English English English |
| Published: |
2006
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| Subjects: | |
| Online Access: | http://eprints.uthm.edu.my/8132/1/24p%20JESTIN%20JELANI.pdf http://eprints.uthm.edu.my/8132/2/JESTIN%20JELANI%20COPYRIGHT%20DECLARATION.pdf http://eprints.uthm.edu.my/8132/3/JESTIN%20JELANI%20WATERMARK.pdf |
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| Summary: | Road deformation was occurred so prevalent on rural roads of Batu Pahat
vicinity moreover when it's constructed on soft ground. This study presents the results
of forensic investigation of a deterioration portion of the Parit Sumarto rural road.
This road had been selected as represent of most common types of road deterioration
found in Batu Pahat vicinity through field survey conducted for month in August,
2006. The deformation occurred at the right side of the road which located adjacent to
the open drain. No deformation seen at the opposed side. The deterioration
mechanism hypotheses may due to inadequate layer thicknesses and inappropriate
geometry conditions. Extensive field and laboratory testing was conductect to verify
the hypotheses. Field investigation was initiated by nondestructive testing (NDT) like
ground penetrating radar (GPR) to observe pavement layer thickness and subsurface
condition. Mini falling weight deflectometer (MFWD) measure the modulus of the
unbound layer and lastly density gauge (DG) for density measurement. Subsequently
destructive testing (DT) like dynamic cone penetrometer (DCP) for assessment of
unbound layer and thickness determination was conducted. Also, coring and trenching
to obtain samples for further laboratory tests. Two locations were trench; one at
deteriorated section and one were outside the deteriorated location. MFWD results in
this study revealed unsatisfactory as they are significant low. Layer thickness
determination via GPR, DCP and trenching was at acceptable differences. The data
obtained from NDTs, DTs and laboratory were than used in 2D finite element method
(Plaxis) and multilayer elastic analysis (Kenlayer). By using Plaxis in this study, it is
found that the root cause of the deformation was inappropriate geometrical design
pertaining to road shoulder width. Meanwhile, Kennlayer analysis had shown that
apparent differences in road layer thicknesses seem to be a contribution factor in
deformation. In this study, evaluation of instrumentations used is also discussed to
determine its suitability and effectiveness. |
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