Análise do perfil sustentável das novas tecnologias empregadas no reparo de estruturas de concreto armado corroídas

Abstract

Reinforcement corrosion in reinforced concrete compromises the durability and safety of structures, making it one of the major challenges in civil construction. This study examines the sustainability profile of emerging technologies used in repairing this anomaly, focusing on environmental, social, and economic aspects. The adopted methodology were based on a literature review and a comparative analysis of the main technological innovations aimed at corrosion mitigation, such as self-healing concrete, nanotechnology, stainless steel reinforcements, corrosion-inhibiting additives, and galvanic monitoring sensors. The results indicate that there is no single solution to eliminate corrosion, requiring the selection of the most suitable technology according to the project9s context. Self-healing concrete and nanotechnology improve mechanical properties and preventive maintenance strategies; however, they present challenges related to cost and large-scale production. Stainless steel reinforcements offer high durability, but their significantly high cost is a limiting factor. Meanwhile, corrosion-inhibiting additives and galvanic sensors emerge as cost-effective and efficient alternatives, although they require continuous monitoring to ensure performance. It is concluded that the implementation of these technologies can reduce environmental impacts and maintenance costs, fostering more durable and sustainable buildings, provided they are supported by regulatory guidelines and innovative research.