Extending the Service Life of Rigid Pavement Joints with SelfHealing Sealants

In the work proposed here, we will synthesize and characterize a range of CAN materials as potential sealants. Specifically, we will use materials that cure as a two-part epoxy resin that are subsequently capable of undergoing an exchange mechanism between polymer strands within the molecular structure of the materials. This type of rearrangement mechanism does not influence the mechanical properties, such as the Young’s modulus, enabling the material to maintain its structural integrity (i.e., ability to stand up to vehicular loading); however, thermal cycling over time promotes the material to heal cracks and other material defects4 . The starting materials are readily scaled to large applications and can even be bio-sourced to enhance the sustainability of these polymers. Within this chemistry, we will incorporate silicon-based structures to impart flexibility and water resistance. Finally, we will incorporate adhesion promoting silane agents within the monomer formulation for strong concrete-sealant adhesion. Taken together, this material is hypothesized to have excellent mechanical properties with an enhanced service lifetime

• Supplemental Notes:
  • Funded from Competitive Funds UDel Fed: $121,975, UDel Match: $121,975 VTI Fed: $53,025 VTI: Match: $53,025

Language

• English

Project

• Status: Active
• Funding: $350,000
• Contract Numbers:

  69A3551847103

• 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 Integrated Asset Management for Multimodal Transportation Infrastructure Systems (CIAMTIS)

  Pennsylvania State University
  University Park, PA  United States  16802
• Project Managers:

  Donnell, Eric

  Rajabipour, Farshad

• Performing Organizations:

  Delaware Center for Transportation

  University of Delaware
  Newark, DE  United States  19716

  Virginia Polytechnic Institute and State University, Blacksburg

  Virginia Tech Transportation Institute
  3500 Transportation Research Plaza
  Blacksburg, VA  United States  24061
• Start Date: 20200131
• Expected Completion Date: 20220131
• Actual Completion Date: 0
• USDOT Program: University Transportation Centers Program

Subject/Index Terms

• TRT Terms: Sealing (Technology); Service life; Structural analysis
• Subject Areas: Design; Highways; Research;

Filing Info

• Accession Number: 01731454
• Record Type: Research project
• Source Agency: Center for Integrated Asset Management for Multimodal Transportation Infrastructure Systems (CIAMTIS)
• Contract Numbers: 69A3551847103
• Files: UTC, RIP
• Created Date: Feb 20 2020 9:39AM