To develop and validate concrete mixtures capable of developing high early strength without detrimentally affecting their long-term durability. The mixtures are for use in projects using accelerated bridge construction methods.
Progress/Accomplishments Through March 31, 2015
- Initiated the literature review by collecting and summarizing research reports and journal papers.
- Reviewed ASTM/AASHTO materials testing standards that are applicable to the project.
- Prepared a survey that was sent to New England State DOTs and precast/prestressed producer members of the PCI Northeast Bridge Technical Committee.
- Met at the PCI Northeast Bridge Technical Committee to discuss project and seek feedback.
- Executed a kickoff meeting with members of the NETC Project Technical Committee.
- Compiled and analyzed responses to the survey that was sent to New England State DOTs and precast/prestressed producer members of the PCI Northeast Bridge Technical Committee, including previously used high-early strength concrete mix designs and specifications.
- Began to prepare concrete mix design specifications based on the literature review and feedback from surveys.
- Began a written summary of the literature review including main findings of relevant research reports, technical papers and survey
- Tested preliminary concrete mix designs and compared test results using compressive strength tests on 4 by 8 in. cylinders and work-ability of each trial
- Adjusted existing concrete mix design specifications based on preliminary test results; design specifications will continue to be modified throughout the duration
- A no cost extension is expected to be requested to accommodate the current coordination contract that NETC has with the University of Vermont. The proposed project was for 24 months.
Technical Committee Members
- Maura Sullivan (Chairperson), Massachusetts Department of Transportation
- Dan John, New Hampshire Department of Transportation
- Rob Young, Vermont Agency of Transportation
- Christopher Hart, Rhode Island Department of Transportation
- Ali Jamalipour, Connecticut Department of Transportation
- José Lima, Rhode Island Department of Transportation
- Michael Redmond, Maine Department of Transportation