After one week, electrical strain gauges with resistance of 120
Ohms were mounted on the surfaces of the steel beam, CFRP
sheets, and the concrete slab. In the midspan, the strain gauges
were mounted on the top and bottom of the concrete slab, the top flange and web of the steel beam, and on the CFRP sheets. In
addition, strain gauges were mounted at the end and at the
quarter-length on the CFRP sheets and the tension flange. The
locations of the strain gauges at midspan are shown in Fig. 4.