Influence of Structural Synthetic Fibers on the Transverse Joint Behavior and Faulting of Ultra-thin and Thin Concrete Pavements

Application of structural fiber reinforced concrete in ultra-thin and thin concrete overlays or pavements are quite common in the U.S. While it is evident that structural fibers contribute to the overall performance of the pavements by mitigating some critical distresses, their contribution in mitigating faulting is neither properly quantified nor accounted for in any currently available concrete overlay design procedures. To this end, the Minnesota Department of Transportation (MnDOT) constructed two ultra-thin (3 and 4 inches thick) and four thin (5 and 6 inches thick) concrete pavement test cells at the Minnesota Road Research (MnROAD) facility in the summer and fall of 2017. These test cells have 6 ft x 6 ft concrete slabs and were constructed on a granular base layer. This paper summarizes the design and construction of these six test cells and provides a comprehensive discussion on the joint performance behavior and faulting trends of these cells emphasizing the influence of the fibers on the above-mentioned. It was found that fibers can potentially improve the joint performance and decrease faulting in thin concrete pavements.

Language

  • English

Media Info

  • Media Type: Digital/other
  • Features: Figures; Photos; References; Tables;
  • Pagination: 18p

Subject/Index Terms

Filing Info

  • Accession Number: 01764448
  • Record Type: Publication
  • Report/Paper Numbers: TRBAM-21-04320
  • Files: TRIS, TRB, ATRI
  • Created Date: Dec 23 2020 11:04AM