Toward the development of pavement-specific structural synthetic fibers
Loading...
View/Download File
Persistent link to this item
Statistics
View StatisticsJournal Title
Journal ISSN
Volume Title
Title
Toward the development of pavement-specific structural synthetic fibers
Alternative title
Published Date
2024-06
Publisher
Minnesota Department of Transportation
Type
Technical Report
Report
Report
Abstract
Thin fiber reinforced concrete (FRC) pavements and overlays can be economical for low- and moderate-traffic volume roads. Due to insufficient concrete cover thickness, thin concrete pavements or overlays cannot accommodate dowel bars that are typically used in conventional thick concrete pavements. The critical distress for such applications is the transverse joint faulting because of the lack of joint load transfer between the concrete slabs. The currently available synthetic structural fibers can contribute to joint performance to a certain extent. However, as pavements experience significant slab contraction and expansion and carry both wheel and environmental loads, there is a need to design and develop fibers that will provide high joint performance and help mitigate transverse joint faulting when used at an affordable dosage. The overall goal of this study is to develop pavement-specific fibers that will yield the needed joint performance benefits to achieve the intended design life. The study is being conducted in two phases. This report is written for Phase 1 of the study. The study started with a literature review, followed by a finite element analysis, falling weight deflectometer (FWD) data analysis, and laboratory testing of fiber reinforced concrete and individual fibers embedded in concrete. The finite element results and FWD data were amalgamated to quantify the possible joint load transfer of the base layer and foundation, aggregate interlocking, and the needed contribution from the structural fibers. A procedure was established to account for the contribution of the fibers. A new parameter, namely, modulus of fiber support, was introduced to evaluate the stiffness of the fibers that participate in joint load transfer. Notably, a laboratory approach is identified to determine the modulus of fiber support, which can help determine the optimum fiber dosages as well as design and test the pavement-specific fibers in the future phase of the study.
Description
Related to
Replaces
License
Collections
Series/Report Number
NRRA202403
Funding information
Isbn identifier
Doi identifier
Previously Published Citation
Other identifiers
Suggested citation
Barman, Manik; Sabu, Rohith; Sharma, Pranav; Janson, Austin. (2024). Toward the development of pavement-specific structural synthetic fibers. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/267832.
Content distributed via the University Digital Conservancy may be subject to additional license and use restrictions applied by the depositor. By using these files, users agree to the Terms of Use. Materials in the UDC may contain content that is disturbing and/or harmful. For more information, please see our statement on harmful content in digital repositories.