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April 22, 2026Composites Part C Open AccessOpen Access

Flexural Strengthening of Damaged RC Beams Using CFRP under Monotonic and Cyclic Loads

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Authors

SCSutthahathai Chan-oThammasat UniversityCACharinrat AiamlaooThammasat UniversitySSSayan SirimontreeThammasat University

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Implication

Experimental investigation shows CFRP strengthening enhances flexural strength in corrosion-damaged RC beams, suggesting effective repair techniques.

Key Points

  • This research aims to evaluate the effectiveness of CFRP strengthening in enhancing the flexural behavior of corrosion-damaged RC beams.
  • Conducted experiments on twelve RC beams in six configurations under monotonic and cyclic loading.
  • Applied high-performance non-shrink grout and CFRP composites for repair and strengthening.
  • Analyzed load retention and ductility characteristics of beams during testing.
  • CFRP strengthening restored flexural strength, increasing the ultimate load capacity by 46.3%.
  • Corrosion reduced displacement ductility index by 51.6%, while non-shrink grout alone enhanced ultimate deflection and ductility index by 51.9% and 142.7%, respectively.
  • CFRP U-wrap anchorages prevented premature debonding under cyclic loads, contributing to structural stability.

Cite This Study

Chan-o et al. (2026) studied this question.

synapsesocial.com/papers/69e864866e0dea528dde95b1https://doi.org/10.1016/j.jcomc.2026.100728
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