Influence of crumb rubber on the geotechnical properties of clayey soil

J. S. Yadav () and S. K. Tiwari ()
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J. S. Yadav: Malaviya National Institute of Technology Jaipur
S. K. Tiwari: Malaviya National Institute of Technology Jaipur

Environment, Development and Sustainability: A Multidisciplinary Approach to the Theory and Practice of Sustainable Development, 2018, vol. 20, issue 6, No 9, 2565-2586

Abstract: Abstract The environmentally friendly and safe disposal of waste discarded rubber tyres are becoming a matter of serious concern across the globe because of its detrimental effect on health, environment and ecological systems. The paper aims at assessing the impact of waste rubber tyre inclusion on the geotechnical properties of clayey soil. Discarded rubber in the form of crumb rubber of size ranging between 0.8 and 2 mm varying from 0 to 10% was used in this investigation. Several tests, namely compaction, unconfined compressive strength, split tensile strength, California bearing ratio, consolidation and swelling pressure, along with microstructural studies have been carried out on different combinations of clayey soil and crumb rubber. The results of the study demonstrate that the inclusion of crumb rubber reduces the maximum dry unit weight and optimum moisture content of the clay. The addition of crumb rubber up to 5% in the clay causes an insignificant increase in the unconfined compressive strength and split tensile strength. Compared with the clayey soil, the inclusion of crumb rubber up to 5% improves the California bearing ratio of the clayey soil in unsoaked condition. It has also noticed that addition of crumb rubber helps in reducing the compression index and swelling pressure of the clayey soil.

Keywords: Clay–crumb rubber mixtures; Compaction; Strength; CBR; Consolidation; Swelling pressure (search for similar items in EconPapers)
Date: 2018
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DOI: 10.1007/s10668-017-0005-y

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