Behaviour of a capping layer reinforced with recycled tyres
RIS ID
137743
Abstract
In this paper, a sustainable approach for reducing lateral displacement in a track by increasing the confining pressure in the track substructure is demonstrated by placing a cellular rubber (tyre) membrane infilled with crushed ballast, as an alternative to a traditional capping layer of compacted granulates. Plate-load tests on a single tyre filled with gravel and subjected to a vertical load were carried out to investigate the interaction between tyre and gravel. A track model with tyre reinforcement was created to evaluate the performance of a tyre-reinforced capping layer under cyclic loading, and a numerical model was developed to determine the benefit that tyres would provide to railway substructure, especially when spent ballast is recycled as capping layer materials.
Publication Details
Sun, Q., Indraratna, B. & Heitor, A. (2019). Behaviour of a capping layer reinforced with recycled tyres. Proceedings of the Institution of Civil Engineers: Ground Improvement, 172 (3), 127-137.