Influence of different processing techniques on the mechanical properties of used tires in embankment construction |
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| Authors: | Ay?e Edinçliler Gökhan Baykal Altug Sayg?l? |
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| Institution: | 1. Department of Earthquake Engineering, Kandilli Observatory and Earthquake Research Institute, Bo?aziçi University, Cengelkoy, 34684 ?stanbul, Turkey;2. Civil Engineering Department, Bo?aziçi University, 34342 ?stanbul, Turkey;1. Golder Associates Inc., 500 Century Plaza Drive, Suite 190, Houston, TX 77073, USA;2. Fugro Consultants, Inc., 6100 Hillcroft Ave, Houston, TX 77081, USA;3. Department of Civil Engineering, IIT Hyderabad, Yeddumailaram, Telangana 502205, India;4. School of Civil Engineering, Purdue University, West Lafayette, IN 47907-1284, USA;1. Department of Civil Engineering, The University of Hong Kong, Haking Wong Building, Pokfulam Road, Hong Kong;2. Department of Architecture and Civil Engineering, City University of Hong Kong, Kowloon Tong, Hong Kong;3. AECOM Asia Company Limited, Hong Kong;1. School of Civil Engineering, Iran University of Science and Technology, P. O. Box 16846-13114, Narmak, Tehran, Iran;2. School of Civil Engineering, Shahrood University of Technology, P. O. Box 3619995161, Shahrood, Iran |
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| Abstract: | Use of the processed used tires in embankment construction is becoming an accepted way of beneficially recycling scrap tires due to shortages of natural mineral resources and increasing waste disposal costs. Using these used tires in construction requires an awareness of the properties and the limitations associated with their use. The main objective of this paper is to assess the different processing techniques on the mechanical properties of used tires–sand mixtures to improve the engineering properties of the available soil. In the first part, a literature study on the mechanical properties of the processed used tires such as tire shreds, tire chips, tire buffings and their mixtures with sand are summarized. In the second part, large-scale direct shear tests are performed to evaluate shear strength of tire crumb–sand mixtures where information is not readily available in the literature. The test results with tire crumb were compared with the other processed used tire–sand mixtures. Sand–used tire mixtures have higher shear strength than that of the sand alone and the shear strength parameters depend on the processing conditions of used tires. Three factors are found to significantly affect the mechanical properties: normal stress, processing techniques, and the used tire content. |
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