A Shape Memory Polymer Based Self-Healing Sealant for Expansion Joint

This project will develop and test a shape memory polymer based sealant for use in expansion joints in pavements and bridges capable of preventing adhesive and cohesive failures through a self-healing mechanism, eliminating the need for replacing the sealant. Work will be carried out in three stages. In the first stage the focus will be on the fabrication and characterization of the smart syntactic foam sealant. Established fabrication and curing processes for the sealant will be employed using shape memory polymer, glass and polymeric microballoons, and multi-walled carbon nanotubes. The sealant will be programmed under a 2-D stress condition by simulating the actual working conditions of the sealant in bridge and pavement joints. The shape fixity and recovery rates of the sealant during the thermomechanical programming process will be determined and parameters controlling them will be established. The glass transition temperature as well as the visco-elastic properties of the sealant in terms of storage modulus and loss will also be tested. Work in the second stage will focus on the performance evaluation of the developed syntactic foam as a smart sealant in bridge and pavement joints using established criteria. The evaluation will include uniaxial compression and tension tests, thermal cycling, shear test, durability of bond in moist environment, ultraviolet radiation aging, and stress relaxation test. Work in the third and final stage will involve field evaluation of the developed sealant system on a highway bridge. Louisiana Transportation Research Center (LTRC) will identify a bridge with a span-length of about 20m and install at least two expansion joints using the developed smart sealant. The performance of the sealant will be monitored for the duration of the project and beyond by the Louisiana Department of Highways and Development. The final report will document all developments along with a methodology for using the new sealant system in expansion joints in bridges and pavements.

Language

  • English

Project

  • Status: Completed
  • Contract Numbers:

    Project 20-30, IDEA

  • Sponsor Organizations:

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590

    American Association of State Highway & Transportation Officials (AASHTO)

    444 North Capitol Street, NW, Suite 225
    Washington, DC  United States  20001

    National Cooperative Highway Research Program

    Transportation Research Board
    500 Fifth Street, NW
    Washington, DC  United States  20001
  • Project Managers:

    Jawed, Inam

  • Start Date: 20090423
  • Expected Completion Date: 0
  • Actual Completion Date: 0
  • Source Data: RiP Project 22104

Subject/Index Terms

Filing Info

  • Accession Number: 01547243
  • Record Type: Research project
  • Source Agency: National Cooperative Highway Research Program
  • Contract Numbers: Project 20-30, IDEA
  • Files: TRB, RiP
  • Created Date: Dec 4 2014 1:00AM