Abstract
Used automobile tyres are a form of wastes, which cause disposal and environmental problems. The main objective of the study is to evaluate the angle of shearing resistance (ϕ) of the poorly graded sand (SP) reinforced with the untreated tyre fibres (UTTFs) and cement coated tyre fibres (CCTFs). In the paper, a surface modification of tyre fibres by cement coating is proposed to increase the specific gravity in order to obtain uniform mixing, and improve a strong bond between the tyre fibres and sand particles. Direct shear tests were performed on the mixtures of UTTFs–sand and CCTFs–sand with proportion of fibres equal to 0, 2.5, 5, 7.5, 10, and 12.5% by weight of dry sand. Three vertical effective stresses of 50, 100, and 150 kPa were assigned and all the tests were performed at a strain rate of 0.25 mm/min. Optimum fibre content is observed at 10%. The ϕ values at 10% for CCTFs and UTTFs reinforced sand are approximately 12% and 8% more than that of 0% fibre content (i.e., only sand) respectively.
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Venkateswarlu, P., Krishnaveni, E.P., Bishnoi, D., Solanki, C.H., Shukla, S.K. (2019). Enhancement of Shearing Strength of Poorly Graded Sand by Using Surface Modified Waste Rubber Tyre Fibres. In: Agnihotri, A., Reddy, K., Bansal, A. (eds) Recycled Waste Materials. Lecture Notes in Civil Engineering , vol 32. Springer, Singapore. https://doi.org/10.1007/978-981-13-7017-5_8
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DOI: https://doi.org/10.1007/978-981-13-7017-5_8
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