Wahono, Endro Prasetyo and zaenudin, ahmad and Arifaini, Nur Preliminary Study of Lab-Scale Railway Ballast Monitoring Using Ground Penetration Radar (GPR). IOP Conference Series. (In Press)
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Abstract
Railway ballast is generally composed of uniformly graded aggregate. It plays an important role in load stress distribution to subgrade as well as free-drainage systems. Periodical ballast assessment using GPR is a relatively new method, yet has been actively adopted by several countries due to its ability to assess early-stage ballast deterioration. Thus, this method has become paramount of importance to minimize the cost of maintenance and the risk of accidents. Compared to the current assessment method, Indonesia still uses a passing-tonnage method that may overlook premature damage of ballast. This research is a preliminary study that tries to provide visual imagery from the GPR response of railway ballast in a lab-scale model using a 1 GHz Ground Penetration Radar. The testing chamber was manufactured and customized to facilitate GPR run in a lab-scale experiment. Ballast material was obtained from Tarahan quarry with a specific gravity of 2.65. Sieve analysis was also conducted in accordance with ASTM E11 to meet the technical specifications determined by Indonesia Ministerial Regulation No. 60 (2012). Ballast with a depth of 30 cm was laid out into a testing chamber in two different methods; non-layering and layering; then scanned with GPR with a trace length of 1.35 m. The result shows that the non-layering method ballast composition exhibits bigger voids indicated by prevalent amplitude drop along the trace. Meanwhile, the layering method exhibits better ballast structural composition with fewer voids being shown.
| Item Type: | Article |
|---|---|
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) |
| Divisions: | Fakultas Teknik (FT) > Prodi Magister Teknik Sipil |
| Depositing User: | Dr Endro Prasetyo Wahono |
| Date Deposited: | 10 Oct 2023 06:10 |
| Last Modified: | 10 Oct 2023 06:10 |
| URI: | http://repository.lppm.unila.ac.id/id/eprint/52601 |
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