Mitigating Pavement Reflective Cracking Using A Ductile Concrete Interlayer

Overlays are constructed over existing pavement structures as a repair measure. When an overlay is placed on an existing pavement, under thermal, shrinkage or traffic induced loadings, cracking of the overlay often takes place at locations where there are joints or cracks in the underlying pavement due to stress concentration. This phenomenon is known as reflective cracking. Reflective cracking in the overlay allows water to penetrate the pavement structure and contributes to many forms of pavement deterioration, including increased roughness, spalling and decreased fatigue life. Therefore, to achieve an effective and durable pavement repair using overlay system, reflective cracking needs to be suppressed. A ductile high-performance fiber reinforced concrete (HPFRC) interlayer is proposed in this research to mitigate the reflective cracking problem in pavement overlays. It is hypothesized that by adding a thin layer of highly ductile HPFRC material between the existing pavement and overlay, reflective cracking can be arrested by the ductile interlayer. HPFRC mixtures will be selected for the proposed interlayer application and their mechanical properties will be characterized. HPFRC interlayer system will be designed and tested under static and fatigue loadings to evaluate their performance and effectiveness in suppressing reflective cracking. The outcome of this research will include design recommendations and guidelines for HPFRC interlayer systems.

• Supplemental Notes:
  • 18PLSU13

Language

• English

Project

• Status: Completed
• Funding: $89748
• Contract Numbers:

  69A3551747106

• Sponsor Organizations:

  Department of Transportation

  Intelligent Transportation Systems Joint Program Office
  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590

  Office of the Assistant Secretary for Research and Technology

  University Transportation Centers Program
  Department of Transportation
  Washington, DC  United States  20590
• Managing Organizations:

  Department of Transportation

  Intelligent Transportation Systems Joint Program Office
  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590

  Transportation Consortium of South-Central States (Tran-SET)

  Louisiana State University
  Baton Rouge, LA  United States  70803
• Project Managers:

  Hassan, Marwa

• Performing Organizations:

  University of Louisiana at Lafayette

  104 University Circle
  Lafayette, LA  United States  70503
• Principal Investigators:

  Zhang, Qian

  Khattak, Mohammad

• Start Date: 20180315
• Expected Completion Date: 20190915
• Actual Completion Date: 20190915
• USDOT Program: University Transportation Centers

Subject/Index Terms

• TRT Terms: Fatigue (Mechanics); Fiber reinforced concrete; Load tests; Pavement components; Pavement interlayers; Reflection cracking; Repairing
• Subject Areas: Bridges and other structures; Design; Highways; Materials; Pavements;

Filing Info

• Accession Number: 01664065
• Record Type: Research project
• Source Agency: Transportation Consortium of South-Central States (Tran-SET)
• Contract Numbers: 69A3551747106
• Files: UTC, RIP
• Created Date: Mar 23 2018 7:49AM