Abstract
This paper presents experimental research conducted on full-scale
one-way reinforced concrete (RC) slabs. The 26 slabs with and without
an overhang at one extremity were tested under simply supported conditions.
The geometry and loading configuration allowed for the study of positive
and negative moment regions. The slabs were strengthened with unidirectional
carbon fiber-reinforced polymer (CFRP) laminates installed by manual
lay-up. Different failure mechanismsВ—namely concrete shear, concrete
crushing, CFRP rupture, and CFRP peelingВ—were obtained by varying
the CFRP laminate cross-sectional area and amount of internal steel
reinforcement. The findings of an analytical modelВ— simulating and
interpreting the experimental resultsВ—are also given. These findings
confirm the notion that peeling (that is, delamination) of the CFRP
laminate affects the system performance but can be predicted by monitoring
interface shear stresses.
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