Strategies for enhancing the mechanical performance of FRCM composites and FRCM ‐strengthened members: A state‐of‐the‐art review

Fiber‐reinforced cementitious matrix (FRCM) composites have emerged as a safe, durable, and convenient alternative to fiber‐reinforced polymer systems for strengthening concrete and masonry structures. However, the non‐uniform bond between the fibers and the mortar often leads to fiber‐bundle pull‐out and rupture, as well as bond failures at the FRCM–concrete or fiber–mortar interfaces. These phenomena introduce significant uncertainty in the mechanical performance, representing one of the key factors limiting the efficiency and widespread application of FRCM systems. This review systematically summarizes and evaluates existing strategies for enhancing the performance of FRCM composites and FRCM‐strengthened structural members, with a focus on four critical aspects: composite materials, manufacturing process, interfacial modification, and strengthened members. The underlying mechanisms, advantages, and limitations of each approach are discussed in detail. It is found that while individual techniques exhibit considerable potential, their effectiveness can vary widely; hence, integrated approaches addressing multiple interfacial issues simultaneously are essential for achieving substantial performance improvements. Future research should focus on quantifying key influencing parameters and considering the synergistic effects of combined enhancement strategies.