Concrete Shear Strength of HIRC Beams Reinforced with a SMA

The aim of the study is to evaluate the concrete shear strength and structural behavior of two general beams and eight shape memory alloys (SMAs)-reinforced beams under the flexural test. This work compares the existing reference formula for concrete shear strength with test result to provide the basic data for the design of highly intelligent reinforced concrete (hereinafter, HIRC) beams. The evaluation of the concrete shear strength was performed with effective depth (d=65, 70, 80), SMA diameter change (o=2.0, 2.5) as the main variables of the specimens. For the relationship between the effective depth and the Vexp/Vcal, the test result shows that the concrete shear strength gradually approaches 1.0 as the effective depth length increase. For the AIJ formula, the specimens are approached evenly for comparison between Vexp/Vcal and the by-product (garnet, fly-ash) reinforced specimen; however, other formulas indicate a deviation.