Article,

Performance of One-Way Reinforced Concrete Slabs with Externally Bonded Fiber-Reinforced Polymer Strengthening

, , and .
ACI Structural Journal, 101 (2): 193--201 (March 2004)

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.

Tags

Users

  • @v.vitanov

Comments and Reviews