Self-Compacting Concrete Jacketing – Tests and Analysis

This study presents experimental and analytical results obtained from the application of a reinforced self-compacting concrete jacketing technique for the rehabilitation of shear damaged reinforced concrete beams. Three shear-dominated beams were initially subjected to monotonic four-point bending loading. The damaged beams were first restored using self-compacting concrete jackets that encased the bottom width and both vertical sides of the beams including small diameter steel bars and U-formed stirrups and then retested. The applied jacket was designed to increase the shear capacity of the initially tested beams and to alter their brittle failure mode to a more ductile one. Test results indicated that this jacketing technique is a promising rehabilitation method since the strength and the overall performance of the jacketed beams was ameliorated with respect to the initial specimens. Analytical results of the flexural and the shear capacity of the tested beams are also presented. Comparisons between test data and predicted strength values showed a good agreement.