Extending the Service Life of Rigid Pavement Joints With Self-Healing Sealants

Details

• Creators:
  Milev, Sandra ; Shaikh, Mohammad Shadab ; Agrawal, Shivani ; Kloxin, Christopher J ; Brand, Alexander S. ; Tatar, Jovan
• Corporate Creators:
  Center for Integrated Asset Management for Multimodal Transportation Infrastructure Systems (CIAMTIS) (UTC) ; University of Delaware ; Pennsylvania State University
• Corporate Contributors:
  United States. Department of Transportation. University Transportation Centers (UTC) Program ; United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology
• Subject/TRT Terms:
  • Concrete pavements
  • Sealing (Technology)
  • Service life
  • Structural analysis
  • Modulus sealants
  • self-healing
  • dynamic covalent bonds
• Publication/ Report Number:
  CIAM-UTC-REG17
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States
• Edition:
  Final Report, 02/01/2020 – 12/31/2023
• Corporate Publisher:
  Center for Integrated Asset Management for Multimodal Transportation Infrastructure Systems (CIAMTIS) (UTC)
• Abstract:
  As transportation agencies largely neglect joint sealant maintenance in concrete pavements, water infiltration into the deteriorated joint and subgrade often results in base softening, erosion, and faulting, posing a significant financial burden on taxpayers. To improve the durability performance of concrete pavement sealants, an elastomer with self-healing ability was designed by incorporating dynamic disulfide bonds. The effects of monomer type, type of initiator/catalyst and its concentrations on the polymer network were analyzed to understand how they influence material properties and eventually polymer self-healing. The performance of the new self-healing sealant was characterized under typical environmental and load conditions experienced by pavement joints. The sealant exhibited satisfactory performance across several aspects (modulus, strength, adhesion, hardness, fatigue) with self-healing efficiency of 78%. However, before implementation, critical concerns regarding residual deformation and resistance must be addressed.
• Format:
  PDF
• Funding:
  69A3551847103
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/77973/dot_77973_DS1.pdf
• File Type:
  [PDF - 3.72 MB]
• Collection(s):
  University Transportation Centers
• Main Document Checksum:
  urn:sha-512:4f6c4e0502482d9e94a04eea5fae586f6bc009e285736dcc6eb5915082eee2376e747ffcaad35f9a1a3014571c44b49d938c7e9f75cbe0bb89843e6ac3fc4d36