New reports, tech briefs, and spreadsheet tool issued by the National Concrete Pavement Technology (CP Tech) Center summarize laboratory and field performance of various FRC bridge decks and concrete overlays (links below as well):
1 –“Fiber-Reinforced Concrete for Pavement Overlays: Technical Overview“ (April 2019)
2 –“Overview of Fiber-Reinforced Concrete Bridge Decks“ (March 2019)
3 –“OVERVIEW OF FIBER-REINFORCED CONCRETE BRIDGE DECKS” (March 2019)
4 –“FIBER-REINFORCED CONCRETE FOR PAVEMENT OVERLAYS” (March 2019)
5 –“Residual Strength Estimator Spreadsheet” tool (March 2019)—will help pavement engineers use FRC in concrete pavement applications: It provides an estimate of the FRC performance value to specify for a project, as well as the effective flexural strength to input into the mechanistic-empirical (M-E) concrete pavement design software.
Limited guidance is currently available on design and testing of fiber-reinforced concrete (FRC) for bridge decks and overlays. Nevertheless, multiple states have required bridge decks to be constructed with macrofibers in order to reduce deck cracking. Technology deployment products for this pooled fund project include the National Concrete Consortium (NCC) website, the Technology Transfer Concrete Consortium (TTCC) listserv, technical materials/tech briefs, E-News and CPRoad MAP briefs, TTCC/NCC-sponsored research, and technical training.
Another tech brief explains how to determine the appropriate fiber reinforcement performance values to specify and implement in the structural design calculations for bonded and unbonded concrete overlay projects using a tool developed as part of the project.
The ongoing project is sponsored by the FHWA Technology Transfer Concrete Consortium Transportation Pooled Fund. Steven Tritsch, Associate Director-CP Tech Center is the principal investigator on the project and Peter Taylor, Director-CP Tech Center and Director-ISCP is co-principal investigator. The report and tech briefs were authored by Jeffery Roesler, Professor-University of Illinois Urbana-Champaign and President-ISCP; Armen Amirkhanian, Assistant Professor-University of Alabama and Communications Director-ISCP; Amanda Bordelon, Assistant Professor-Utah Valley University; and Alexander Brand, Assistant Professor-Virginia Polytechnic Institute and State University.
For the project overview, publications and spreadsheet—please click on image at right, click on 5 links below, or click on 5 links bottom right of webpage:
https://cptechcenter.org/research/in-progress/technology-transfer-concrete-consortium-tpf-5313/
1 – https://intrans.iastate.edu/app/uploads/2019/04/FRC_overlays_tech_ovw_w_cvr.pdf
2 – https://intrans.iastate.edu/app/uploads/2019/03/FRC_bridge_decks_ovw_w_cvr.pdf
3 – https://intrans.iastate.edu/app/uploads/2019/03/FRC_bridge_decks_ovw_TB.pdf
4 – https://intrans.iastate.edu/app/uploads/2019/03/FRC_bridge_decks_ovw_w_cvr.pdf
5 – SPREADSHEET TOOL: download: Residual Strength Estimator Spreadsheet
For the original CP Tech Center article, please go to: https://intrans.iastate.edu/news/new-frc-tool-and-publications-issued-by-cp-tech-center/