World Journal of Engineering Research and Technology

Oluwafemi Samson Afolabi*, Muritala Olamilekan Issa

ABSTRACT

The deteriorating state of global infrastructure presents one of the most significant challenges in civil engineering today, manifesting as ageing bridges in developed economies and an urgent need for new, resilient systems in advanced developing economies like South Africa. Traditional repair methods often provide only short-term solutions. This paper provides a critical review of Ultra-High Performance Concrete (UHPC) as a transformative material for both the rehabilitation and construction of critical infrastructure. We move beyond a simple summary of material properties to offer a comprehensive, analytical synthesis of UHPC's performance, drawing on international case studies from pioneering nations in Europe, North America, and Asia, while also analyzing its immense potential for nations facing a dual infrastructure challenge. By interrogating the global body of literature, we critically evaluate its superior mechanicalproperties and exceptional durability. A central focus is the Life-Cycle Cost Analysis (LCCA), which demonstrates that while UHPC has a higher initial cost, its extended service life and minimal maintenance requirements often result in a significantly lower total cost of ownership. The paper identifies key challenges to global adoption, including material costs, the need for specialized expertise, and the harmonization of international design codes, with a particular focus on the barriers to implementation in resource-constrained environments. We conclude by outlining a strategic roadmap for future research to accelerate the adoption of this resilient and economically sustainable solution worldwide.

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