Abstract: (14513 Views)
In this paper, the effect of cyclic loading on punching strength of flat slabs strengthened with Carbon
Fiber Reinforced Polymer (CFRP) sheets is studied. Experimental results of ten slab specimens under
monotonic and cyclic loading are analyzed. Eight specimens were strengthened with CFRP sheets on the
tensile face of the slabs and the two other specimens were kept un-strengthened as control specimens. The
width of CFRP sheets varied in different specimens. After the tests, the punching shear strength of specimens
under cyclic loading was compared with those with monotonic loading. The comparison of results shows that
cyclic loading decreases the effect of CFRP sheets on punching shear strengthening. This decrease was more
for the specimens with a larger value of reinforcing steel ratio. Therefore, it can be concluded that for
specimens with large reinforcing steel ratios, cyclic loading may completely eliminate the effect of CFRP
sheets on shear strengthening of slabs.
Type of Study:
Research Paper |