2025 Volume 78 Issue 1 Pages 339-347
The authors have conducted fundamental research on the load transfer function at transverse joints in concrete pavements with polypropylene fiber reinforced concrete（PPFRC）. From the test results, the relationship between the residual shear strength and the residual cracking width after shear cracking, and the shear stiffness were clarified. However, the specimens used in the previous shear tests were prism specimens fabricated using steel formworks. Then, the orientation and dispersion of polypropylene fibers were limited by the wall effect. On the other hand, concrete pavements having large plane shape compared to the slab thickness are not limited in the fiber orientation and dispersion. In this study, the fiber orientation and dispersion, and the size effect on shear strength were evaluated using prism specimens cut from PPFRC square slabs, and the relationship between the residual shear strength and the residual cracking width, and the shear stiffness were investigated.
