FORMATION AND FAILURE BEHAVIOR OF OPEN-GRADED FRICTION COURSE AT LOW TEMPERATURES

Authors

  • Baoyang Yu College of Transportation Engineering, Dalian Maritime University; School of Transportation Engineering, Shenyang Jianzhu University
  • Zongguang Sun College of Transportation Engineering, Dalian Maritime University
  • Lin Qi Department of Civil Engineering, Shenyang Urban Construction Institute

DOI:

https://doi.org/10.14311/CEJ.2022.02.0020

Keywords:

Open-graded friction course (OGFC), Four-point bending test, Digital surface model (DSM), Strain field, Stress reconstruction

Abstract

To study the deformation and failure behavior of the open-graded friction course (OGFC) before cracking at low temperatures, a four-point bending test of the trabecula was conducted, and the deformation process was monitored by the digital speckle method (DSM). The distribution law of the strain field of the trabecular specimens was analyzed. The horizontal strain field gradually changed from a uniform distribution to a strain concentration area with loading. The crack initiation time, crack initiation strain, and deformation period were obtained from the strain curve. The combination of stress reconstruction and DSM makes the stress measurement of the OGFC more authentic.

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Published

2022-07-31

How to Cite

Yu, B., Sun, Z., & Qi, L. (2022). FORMATION AND FAILURE BEHAVIOR OF OPEN-GRADED FRICTION COURSE AT LOW TEMPERATURES. Stavební Obzor - Civil Engineering Journal, 31(2), 260–273. https://doi.org/10.14311/CEJ.2022.02.0020

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