Assessing Condition of Rehabilitated Concrete Pavement with Slab Fracturing and Asphalt Overlay Using Distributed Fiber Optic Sensors

The United States is experiencing a significant increase in registered motor vehicles, resulting in increasing traffic loads on transportation infrastructure, particularly on roads prone to cracking. Asphalt overlay is commonly used to rehabilitate concrete pavements. However, asphalt overlay often results in reflective cracking, leading to expensive repairs. To address this issue, slab fracturing and asphalt overlay has been popularly applied to rehabilitate cracked concrete pavements in recently years. To investigate the effectiveness of the slab fracturing and asphalt overlay for concrete pavement rehabilitation, his research focuses on understanding how crack propagate through the asphalt overlay. While current crack detection methods struggle to assess bottom-up cracking effectively, posing safety hazards and financial burdens, this project proposes to use distributed fiber optic sensing (DFOS) to monitor bottom-up cracking of the rehabilitated concrete pavements using slab fracturing and asphalt overlay in real time. Through a comprehensive approach combining numerical simulations and laboratory experiments, this research aims to expand our understanding of crack formation mechanisms while assessing the effectiveness of DFOS for monitoring bottom-up cracks in pavements. Numerical simulations using finite element analysis replicate real-world pavement conditions and consider factors such as traffic loading and material properties. Laboratory experiments entail constructing pavement specimens with different layers, installing DFOS sensors to measure strain during crack emergence, and subjecting specimens to controlled loading conditions resembling real-world scenarios. Anticipated outcomes include providing effective pavement condition monitoring alternatives for rehabilitated concrete pavements using slab fracturing and asphalt overlay, contributing to safer and more sustainable management of transportation systems.

• Record URL:
  https://www.ctips.org/projects/details.php?id=600

Language

• English

Project

• Status: Active
• Funding: $230158
• Contract Numbers:

  69A3552348308

• Sponsor Organizations:

  Office of the Assistant Secretary for Research and Technology

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

  Center for Transformative Infrastructure Preservation and Sustainability

  North Dakota State University
  Fargo, ND  United States  58108
• Project Managers:

  Tolliver, Denver

• Performing Organizations:

  Upper Great Plains Transportation Institute

  North Dakota State University
  1320 Albrecht Boulevard
  Fargo, ND  United States  581052
• Principal Investigators:

  Lu, Pan

  Huang, Ying

• Start Date: 20240417
• Expected Completion Date: 20260416
• Actual Completion Date: 0
• USDOT Program: University Transportation Centers Program
• Source Data: CTIPS-002

Subject/Index Terms

• TRT Terms: Bituminous overlays; Cracking of concrete pavements; Fiber optics; Monitoring; Overlays (Pavements); Pavement maintenance; Sustainable development; Sustainable transportation; Traffic loads
• Subject Areas: Highways; Maintenance and Preservation; Pavements;

Filing Info

• Accession Number: 01917011
• Record Type: Research project
• Source Agency: Center for Transformative Infrastructure Preservation and Sustainability
• Contract Numbers: 69A3552348308
• Files: UTC, RIP
• Created Date: Apr 29 2024 10:55AM