Journal of Shandong University(Engineering Science) ›› 2021, Vol. 51 ›› Issue (4): 54-60.doi: 10.6040/j.issn.1672-3961.0.2021.036

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The pullout features of reinforced strips of waste tires in sandy media

LI Xiaoliang1, LIU Yuan2, LI Yuxin1, JIANG Jianhong3, WEI Kun1, ZHANG Hongbo2*   

  1. 1. Shandong Hi-Speed Co., Ltd., Jinan 250014, Shandong, China;
    2. School of Qilu Transportation, Shandong University, Jinan 250061, Shandong, China;
    3. Shandong Provincial Communications Planning and Design Institute Group Co., Ltd., Jinan 250031, Shandong, China
  • Published:2021-08-18

Abstract: In order to reduce the serious pollution to the environment and the potential safety hazards caused by the large amount of accumulated waste tires, a new method was proposed by cutting tires into strips to utilize the strips as reinforced material due to the good tensile stiffness, strong aging resistance and rough interface properties of waste tire. By adjusting the conditions of different density of sand, a comparative study on the pull-out characteristics of waste tire strips and geogrids was carried out. It was observed that the pullout load-displacement curve showed a tendency of linear increase before the strip of waste tires in the sand medium reaching the maximum pullout resistance. The static analysis of peak pullout resistance revealed that the shear properties of the tire strip-sand interface complied with mohr-coulomb criterion, thus the linear relationship between interface shear strength and interface friction angle, like-cohesion was established. By comparing the reinforcement performance of geogrid, it was found that the peak shear stress of scrap tire strip was about 2.5~3.2 times that of geogrid; the displacement of the peak shear stress was about 5 times that of geogrid. The research results verified the feasibility of used tire strips as reinforcing materials, and laid the foundation for further theoretical research and engineering applications.

Key words: waste tire strip, geogrid, sand media, pullout test, interface strength

CLC Number: 

  • U414
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