Effects of Crumb Rubber on the Shear Strength of Sand: An Experimental Study

Authors

  • Brandon Hon Kong Sung University of Nottingham Malaysia
  • Soon Yee Wong University of Nottingham Malaysia
  • Perpetua Aaniya Cyril University of Sri Jayewardenepura
  • Min Lee Lee University of Nottingham Malaysia
  • Abdullahi Ali Mohamed University of Nottingham Malaysia

DOI:

https://doi.org/10.31357/ait.v2i2.5446

Keywords:

density, direct shear box test, lightweight backfill materials, rubber content, shear strength

Abstract

The application of waste rubber tires for ground improvement helps to improve the environment by recycling and reusing it as admixtures. This research aims to investigate the shear strength parameters of rubber-sand mixtures. By using crumb rubber with a constant size (425μm), the sand is replaced by different percentages (0, 2.5, 5.0, 7.5, and 10%) of crumb rubber by weight. A direct shear box test is used to determine the shear strength parameters of rubber-sand mixtures with two different controlled densities. The samples were loaded with normal stresses of 20, 40 and 80kPa and were sheared at a rate of 1mm/min. Although, this experiment discovered that crumb rubbers improve the shear strength parameters in loose sand, however, a reduction in shear strength parameters was found in dense sand. Moreover, it was observed that the inclusion of crumb rubbers into sand greatly improve the strain energy of both loose and dense sand. Likewise, rubber has a low unit weight which makes it suitable for lightweight backfill materials. The surface properties of rubber should be further studied to understand the contribution of shear strength in the rubber-sand mixture.

Author Biographies

Soon Yee Wong, University of Nottingham Malaysia

Department of Civil Engineering, Assistant Professor

University of Nottingham Malaysia

Perpetua Aaniya Cyril, University of Sri Jayewardenepura

Department of Civil and Environmental Technology,
Faculty of Technology,
University of Sri Jayewardenepura

 

Min Lee Lee, University of Nottingham Malaysia

Department of Civil Engineering, Associate Professor

University of Nottingham Malaysia

Abdullahi Ali Mohamed, University of Nottingham Malaysia

Department of Civil Engineering, Associate Professor

University of Nottingham Malaysia

Downloads

Published

2022-05-25

How to Cite

Sung, B. H. K., Wong, S. Y., Cyril, P. A., Lee, M. L., & Mohamed, A. A. (2022). Effects of Crumb Rubber on the Shear Strength of Sand: An Experimental Study . Advances in Technology, 2(2), 167–182. https://doi.org/10.31357/ait.v2i2.5446

Issue

Section

Polymer Technology

Categories