Project 2.07: High Performance Concrete with Post-Tensioning Shrinking Fibers
High Performance Concrete with Post-Tensioning Shrinking Fibers
Project 2.7
Project Summary
This research improves upon the technique of reinforcing concrete with dispersed fibers by having the fibers axially shrink after curing to produce a dispersed multi-axial post-tensioned state. Such reinforcing may increase the crack resistance and durability of the concrete. Preliminary benchtop testing with natural chitosan polymer fibers have confirmed the viability of the technique, where certain configurations show significant strengthening with the shrinking fibers. This research proposes to expand the knowledge base by examining larger scale chitosan samples, exploring steel and nitinol shape memory fibers that produce a similar effect, studying the underlying mechanical principles and exploring applicability to transportation structures.
Project:
Complete
Start Date:
01/01/2019
End Date:
05/30/2023
Project Cost:
$220,229
Project Type:
Base-funded
Agency ID:
69A3551847101
Sponsors:
Office of the Assistant Secretary for Research and Technology, University Transportation Centers Program, Department of Transportation
University of Vermont
Implementation of Research Outcomes:
This project is in its initial research phase. Implementation of research outcomes will be reported upon completion of the research outputs.
Impacts and Benefits of Implementation:
This project is in its research phase. Impacts and benefits of the research will be reported after the implementation phase.