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"Deformation and degradation behaviour of Rubber Intermixed Ballast Sys" by Chathuri M.K. Arachchige, Buddhima Indraratna et al.

In recent years, there has been an increasing interest in the use of rubber aggregates derived from waste tyres in order to improve track performance, and Rubber Intermixed Ballast System (RIBS) demonstrated some of the important geotechnical properties that reduce ballast deterioration by partially replacing ballast particles using rubber granules ranging from 9.5 to 19.5 mm. This paper focuses on evaluating the characteristics of RIBS subjected to cyclic loads by conducting large-scale triaxial tests for changing rubber contents (0–15% by weight) under confining pressures (30–60 kPa) and a loading frequency of 20 Hz following a monotonic conditioning phase. The results indicate that irreversible rearrangement of grain configurations was pronounced in RIBS with increased rubber at the conditioning phase leading to a reduction in particle deformation during the cyclic loading. It was also demonstrated that the increased rubber content in RIBS increases the energy absorption capacit ....

Rubber Intermixed Ballast System , Ballast Breakage , Cyclic Loading , Ubber Intermixed Ballast , Riaxial Test , Yre Derived Aggregates ,

"Laboratory investigations on the shear behaviour of sand-tyre derived " by J. S. Vinod, M. Neaz Sheikh et al.

A significant amount of research has been carried out in recent years to investigate possible options on the reuse of scrap tyres in civil engineering applications. One of the sustainable options is to utilise scrap tyre as tyre shreds/tyre chips (generally called as Tyre Derived Aggregate, TDA) and sand mixture as a lightweight fill material in the construction of infrastructure. Utilising TDA in infrastructure projects has multiple benefits including environmentally sustainable recycling and reuse of the scrap tyre thereby easing the consumption of natural fills, reduced material costs and enhanced geotechnical properties of the soil. Understanding the shear and volume change behaviours of TDA and sand mixture is critical before recommending the mixture as a suitable lightweight-reinforcing structural fill. In this study, the effect of the addition of TDA on the shear behaviour of sand was investigated using large scale direct shear and triaxial apparatus. It has been observed that T ....

Tyre Derived Aggregate , Direct Shear Testing , Riaxial Testing , Yre Derived Aggregates ,