Fibre-reinforced polymer systems have progressively emerged as a transformative class of materials within the domain of concrete construction, rehabilitation, and structural retrofitting, reshaping conventional understandings of durability, resilience, and lifecycle performance. Over recent decades, the construction industry has faced escalating challenges associated with aging infrastructure, aggressive environmental exposure, seismic vulnerability, and limitations inherent in traditional steel-reinforced concrete systems. These challenges have catalyzed scholarly and professional interest in alternative materials capable of delivering enhanced mechanical performance, corrosion resistance, and adaptability without imposing excessive structural or economic burdens. Fibre-reinforced polymers, encompassing carbon, glass, aramid, polypropylene, polyethylene terephthalate, and hybrid fibre systems embedded in polymeric matrices, have become central to this discourse due to their exceptional strength-to-weight ratios, tailorability, and compatibility with diverse retrofitting strategies (Bandela, 2025).

This research article presents an extensive, theory-driven and literature-grounded investigation into the role of fibre-reinforced polymer systems in advancing construction practices, with particular emphasis on structural retrofitting of reinforced concrete buildings. The study situates fibre-reinforced polymers within a broader historical and theoretical framework of construction material evolution, tracing their emergence from aerospace and marine engineering into mainstream civil infrastructure. It critically examines the mechanical, durability, and seismic performance implications of fibre-reinforced polymer integration, drawing on a wide spectrum of experimental, analytical, and review-based scholarship to articulate nuanced interpretations of material behavior under service and extreme loading conditions (Gorai & Maiti, 2019; Nandhini et al., 2020).

Methodologically, the article adopts a qualitative, interpretive research design grounded in systematic literature synthesis and comparative theoretical analysis. Rather than pursuing empirical experimentation, the study interrogates existing scholarly findings to identify convergences, divergences, and unresolved debates regarding fibre-reinforced polymer applications in concrete systems. Particular attention is paid to retrofitting strategies for corrosion-damaged columns, seismic strengthening of precast and cast-in-situ structures, and the comparative performance of different fibre typologies and laminate configurations (Eskandari-Naddaf et al., 2016; Subha Javgal et al., 2019). The methodological approach emphasizes epistemological rigor, contextual sensitivity, and critical engagement with limitations and assumptions embedded in prior research.

The results of this analysis reveal that fibre-reinforced polymer systems consistently demonstrate superior performance in enhancing load-carrying capacity, ductility, and durability of reinforced concrete elements when compared to conventional strengthening techniques. However, these benefits are neither uniform nor universally applicable; they are mediated by factors such as fibre type, matrix composition, bonding mechanisms, environmental exposure, and structural typology. The findings underscore the necessity of context-specific design frameworks and caution against overly generalized claims regarding fibre-reinforced polymer efficacy (Bandela, 2025; Sarker et al., 2011).

The discussion advances a comprehensive theoretical interpretation of these results, situating them within contemporary debates on sustainable construction, resilience-based design, and performance-based seismic retrofitting. It critically evaluates regulatory guidelines, such as capacity spectrum methods and seismic assessment frameworks, in light of fibre-reinforced polymer integration, highlighting gaps between codified practice and emerging material capabilities (Fajfar, 1999; ATC, 1996). The article concludes by articulating future research directions aimed at harmonizing material innovation with design standards, life-cycle assessment, and ethical considerations in infrastructure development.

By offering an expansive, analytically rich examination of fibre-reinforced polymer systems in concrete construction, this study contributes to the theoretical consolidation and practical advancement of resilient, durable, and adaptable built environments.