Investigation of Influence of Geotextile in Reducing Traffic-Induced Reflective Cracking Using Extended Finite Element Model

An extended finite element model (XFEM) was constructed to investigate the traffic induced reflective cracking propagation and anti-cracking characteristic of geotextile. Influence factors of tensile modulus and placement location of geotextile were analyzed. A repeated loading test on the material test system (MTS) was utilized in this work to validate the XFEM model. Vehicle load simulations were performed considering single moving load and repeated load which were controlled by DLOAD program and direct cyclic step, respectively. It has been found that single moving load can’t satisfy the crack initiation criterion to induce the reflective cracking, but crack propagation induced by repeated load can be classified into four stages. Geotextile stress over the crack is higher than other zone and 15% of total stress is absorbed by geotextile which reduces crack propagation rate. Tensile modulus with the amount of 50 MPa is the limit for different stages and final crack length, and tensile modulus of 100 MPa is the most suitable to achieve the optimal effect on anti-cracking. Geotextile placed at quarter depth of asphalt layer from the bottom had the best crack resistance. Geotextile placed at one third depth of the asphalt layer from the bottom is also more effective than other two locations along with anti-crack propagation.

• Supplemental Notes:
  • This paper was sponsored by TRB committee AFS70 Standing Committee on Geosynthetics. Alternate title: Investigation the Influences of Geotextile on Reducing the Traffic Induced Reflective Cracking Using XFEM.
• Corporate Authors:

  Transportation Research Board

  500 Fifth Street, NW
  Washington, DC  United States  20001
• Authors:
  • Ling, Jianming
  • Cai, Yang
  • Qian, Jingsong
  • Tao, Zefeng
• Conference:
  • Transportation Research Board 96th Annual Meeting
  • Location: Washington DC, United States
  • Date: 2017-1-8 to 2017-1-12
• Date: 2017

Language

• English

Media Info

• Media Type: Digital/other
• Features: Figures; Photos; References; Tables;
• Pagination: 15p
• Monograph Title: TRB 96th Annual Meeting Compendium of Papers

Subject/Index Terms

• TRT Terms: Asphalt pavements; Finite element method; Geotextiles; Reflection cracking; Repeated loads; Simulation; Tensile properties; Traffic loads
• Uncontrolled Terms: Crack propagation
• Subject Areas: Design; Highways; Materials; Pavements;

Filing Info

• Accession Number: 01624792
• Record Type: Publication
• Report/Paper Numbers: 17-03776
• Files: TRIS, TRB, ATRI
• Created Date: Feb 1 2017 1:16PM