The role of scrap rubber size against the characteristics of ballast layer

Abstract

This research utilizes scrap rubber from motorcycle tires as a ballast layer mixture component. A compression test method was used with three test samples: ballast (sample I), ballast with 10% uniform graded scrap rubber (sample II) and ballast with 10% continuous graded scrap rubber (sample III). This research aims to analyze the elastic modulus, durability and vertical deformation of the ballast layer. It can be concluded that the elastic modulus of sample I, II, and III was 14.28 MPa, 8.53 MPa, and 3.10 MPa, respectively. Moreover, the abrasion of sample I, II, and III was 162.1 gr (3.24%), 54.2 gr (1.08%), and 50.1 gr (1%). Furthermore, at the same number of vertical deformation (5 mm), the sample I was able to receive the most considerable load that is 1980.9 Kg, followed by sample II by 1252.2 Kg and sample III by 443.7 Kg.

Investigation of conventional and asphaltic underlayment track behaviors subjected to freight train load: Mechanistic approach

“…Several works have been performed with the aims to enhance the conventional ballasted track-bed performance to prevent structural deterioration due to the passing of trains with higher speed and heavier axle load [10][11][12][13][14][15][16][17][18][19][20][21][22][23][24]. In addition, various studies have been conducted to develop unconventional rail track-bed designs and evaluate their performance to meet the requirements of high-speed railway systems in terms of track vibration, noise, and service life [25][26][27][28][29][30][31][32][33][34][35][36][37][38][39][40][41].…”

Utilization of 60/70 penetration grade asphalt on ballast structures with the variation of percentage and the number of pouring layers

“…However, its usage needs to be considered due to its availability in rail industry. Alternatively, scrap rubber [9][10][11][12][13] and asphalt [4,[14][15][16][17] may also be opted for ballast layer treatment.…”