Análise de desempenho do reforço com manta de fibra de carbono em concretos de cimento Portland

Abstract

The use of reinforced concrete has opened up a plethora of new applications in the field of Civil Engineering. Due to its relatively long lifespan, reinforced concrete has been considered a permanent and durable material for a long time. However, despite its reputation, like any other material in nature, concrete is subject to the deleterious effects of its environment, including physical and chemical aggressions that can cause pathologies that may take decades to manifest. These pathologies may result from non-conformities introduced during the manufacturing process. Moreover, in addition to the natural aging of the material, the pursuit of financial gain or better living standards may lead to the imposition of new destinations and loads on structures that were not foreseen in their original design. Consequently, techniques for the repair and reinforcement of structures have been developed in addition to the necessary techniques for the construction of new structures. The goal is to analyze the performance improvement of Portland cement concrete through the application of a structural reinforcement technique, specifically the use of carbon fiber blankets affixed externally to the element. The research methodology is based on a thorough review of previously published materials by experts in the field, guides, and manuals, as there is no national technical standard on this topic. The study aims to provide a comprehensive overview of carbon fiber material, including its history, manufacturing methods, availability in construction, and application methodologies. Finally, laboratory testing was conducted to quantify the increase in performance, which validated the effectiveness of the material.