Abstract
AbstractRailroad ballast structure layer may experience a decline in mechanical and geometrical performance due to heavy train and environmental loads. In order to improve the quality of ballast structure, the addition of asphalt to ballast layer can be considered as a solution. Therefore, this research utilizes 60/70 penetration grade asphalt for ballast layer binding and stabilization. The objective of this study was to evaluate and analyze the mechanical behavior of clean-ballast and fouled-ballast layers with 2% and 4% penetration grade 60/70 asphalt poured in one (ballast surface layer) and three ballast surface layers. Compressive strength test was performed to analyze the weight of specimen, vertical deformation, and ballast material abrasion. The most prominent finding to emerge from this research was that the use of 60/70 penetration grade asphalt on ballast surface layer is crucial in retaining the load applied by UTM, in order to produce preferable load distribution to the entire ballast structure. It is found that, the higher the 60/70 penetration grade asphalt proportion and the more layers poured with asphalt, the stronger asphalt in reducing ballast abrasion percentage.
Highlights
The problems experienced by the Indonesian government in the development of rail transport among others are expensive infrastructure procurement and high maintenance costs, especially of ballast layer
The most prominent finding to emerge from this research was that the use of 60/70 penetration grade asphalt on ballast surface layer is crucial in retaining the load applied by Universal Testing Machine (UTM), in order to produce preferable load distribution to the entire ballast structure
This study aims to evaluate and analyze the mechanical behavior of clean-ballast and fouled-ballast layers with 2% and 4% penetration grade 60/70 asphalt in one and three layers
Summary
The problems experienced by the Indonesian government in the development of rail transport among others are expensive infrastructure procurement and high maintenance costs, especially of ballast layer. It is known that the stiffness of ballast and sub-ballast differs for each layer [6]. Railroad ballast structure layer may experience a decline in mechanical and geometric performance due to continuous exposure to dynamic loads [7]. In order to improve the quality of ballast structure, the addition of other materials to ballast layer can be considered as a solution. Woodward et al [8], through their studies, had applied a unique material named in-situ polyurethane polymer to increase the stability of ballast structure. Its usage needs to be considered due to its availability in rail industry. Scrap rubber [9,10,11,12,13] and asphalt [4, 14,15,16,17] may be opted for ballast layer treatment
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
