Behavior of conventional reinforcement and a steel-polypropylene fiber blend in slabs-on-grade

Issue Title: Special Issue: Advances in concrete through science and engineering (Guest Editor: W. J. Weiss) Results from a controlled slab-on-grade experiment relating drying shrinkage, curling and joint opening are presented. The experimental program involved instrumented slab strips maintained in a controlled environment for 1 year. The data includes standard materials characterization tests, flexural creep tests, curling profiles, joint opening, internal strain, and moisture measurements. The experimental findings indicate that the restraint provided by conventional reinforcement can cause mid-panel cracks to develop and that the performance of the steel-polypropylene fiber blend compares favorably with the performance of welded wire fabric. Use of a shrinkage-reducing admixture enhances resistance to cracking and reduces moisture vapor emission rates.[PUBLICATION ABSTRACT]