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Materials 2018, 11(7), 1169; https://doi.org/10.3390/ma11071169

Enhancement of Dynamic Damping in Eco-Friendly Railway Concrete Sleepers Using Waste-Tyre Crumb Rubber

1
Birmingham Centre for Railway Research and Education, University of Birmingham, Birmingham B152TT, UK
2
Department of Civil Engineering, School of Engineering, University of Birmingham, Birmingham B152TT, UK
*
Author to whom correspondence should be addressed.
Received: 20 June 2018 / Revised: 4 July 2018 / Accepted: 6 July 2018 / Published: 9 July 2018
(This article belongs to the Special Issue Environment-Friendly Construction Materials)
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Abstract

There is no doubt that the use of waste rubber in concrete applications is a genius alternative because Styrene is the main component of rubber, which has a strong toxicity and is harmful to humans. Therefore, it will significantly reduce impacts on the environment when waste rubber can be recycled for genuine uses. In this paper, the dynamic properties of high-strength rubberised concrete have been investigated by carrying out various experiments to retain the compressive strength, tensile strength, flexural strength, electrical resistivity, and damping characteristics by replacing fine aggregates with micro-scale crumb rubber. Over 20 variations of concrete mixes have been performed. The experimental results confirm that a decrease in the compressive strength can be expected when the rubber content is increased. The new findings demonstrate that the high-strength concrete can be enhanced by optimal rubber particles in order to improve splitting tensile and flexural strengths, damping properties, and electrical resistivity. It is therefore recommended to consider the use of rubberised concrete (up to 10 wt. % crumb rubber) in designing railway sleepers as this will improve the service life of railway track systems and reduce wastes to the environment. View Full-Text
Keywords: crumb rubber; high-strength concrete; damping; dynamic moduli; railway application; recycled material crumb rubber; high-strength concrete; damping; dynamic moduli; railway application; recycled material
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Kaewunruen, S.; Li, D.; Chen, Y.; Xiang, Z. Enhancement of Dynamic Damping in Eco-Friendly Railway Concrete Sleepers Using Waste-Tyre Crumb Rubber. Materials 2018, 11, 1169.

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