Transformative Impacts of Nanotechnology on Sustainable Construction: A Comprehensive Review

Integrating nanotechnology into civil engineering represents a pivotal advancement in construction methodologies, offering substantial improvements in material performance, structural monitoring, and lifecycle efficiency. This comprehensive review synthesizes peer-reviewed literature and case studies to evaluate both established and emerging applications of nanomaterials, including nano-enhanced concrete, self-healing systems, and embedded nanosensors. Quantitative outcomes reported in the literature, such as up to a 30% reduction in carbon emissions and a 25% gain in energy performance, are critically analyzed within broader frameworks of lifecycle assessment and regulatory alignment. In addition to technical evaluations, this study examines economic implications, workforce impacts, and the ethical considerations associated with nanotechnology adoption in construction. It also identifies persistent challenges related to large-scale implementation, cost barriers, and long-term safety. By highlighting the convergence of engineering innovation, environmental metrics, and policy development, this review encourages interdisciplinary collaboration to support the responsible integration of nanotechnologies in future civil infrastructure systems.