Shear strength of tyre chip-sand and tyre shred-sand mixtures

B, Umashankar and Mohan, V K D and Prezzi, M and Salgado, R (2014) Shear strength of tyre chip-sand and tyre shred-sand mixtures. Proceedings of the ICE - Geotechnical Engineering, 167 (6). pp. 585-595. ISSN 1353-2618

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Mixtures of shredded tyres with sand have become accepted geo-materials in the past decade, especially for use as fill materials. Owing to the large size of tyre shreds commonly used in practice, large-scale direct shear testing equipment is specially fabricated to obtain the shear strength parameters of mixtures. The effect of tyre shred-tosand mixing ratio on the mechanical response of the mixtures is studied by performing direct shear tests on mixtures prepared at different mixing ratios. Out of the four types of samples tested, three (with mixing ratios of 20/80, 25/75 and 35/65 by weight of tyre shreds to sand) are prepared using 50 to 100 mm long tyre shreds and one (25/75 by weight of tyre chips to sand) using tyre chips with nominal size of 9.5 mm. The end-of-test friction angle of all the tyre shred-sand mixtures considered in this research is in the 30-33 degrees range. Results of direct shear testing from the present study and other studies in the literature show that the shear strength of tyre shred-sand mixtures is greater than that of tyre chip-sand mixtures because the elongated tyre shred pieces are able to provide greater reinforcement effects than are possible with equidimensional (cubical) tyre chips.

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IITH Creators:
IITH CreatorsORCiD
Item Type: Article
Uncontrolled Keywords: geotechnical engineering; strength & testing of materials; waste management & disposal
Subjects: Civil Engineering > Soil Structure Interaction
Divisions: Department of Civil Engineering
Depositing User: Team Library
Date Deposited: 27 May 2015 09:42
Last Modified: 01 Sep 2017 06:30
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