Estudio del Comportamiento del Concreto Flexible Reforzado con Fibra Sintetica y Usos

Abstract

To optimize the structural and economic performance of constructions, and leveraging advancements in material technology, Universidad Santo Tomás has launched the research project “SIAC.” This project primarily aims to study the behavior and application of synthetic fibers in concrete, evaluating their impact on the mechanical and structural properties of elements. The goal is to identify solutions that improve durability, reduce costs, and shorten execution times in construction projects. The project was initiated with the premise of advancing the design and construction of more efficient buildings, reducing both the weight and dimensions of structural elements, which would save space and costs. After a preliminary analysis and a review of international studies highlighting the benefits of using synthetic fibers in structures such as tunnels and pavements, the team decided to explore their potential as structural reinforcement for residential buildings. Although this material had not been previously used in such structures, the decision was made to develop an experimental design based on prior research, particularly in collaboration with the University of Michigan, a pioneer in the implementation of synthetic fibers in concrete. Under the direction of Dr. Victor Lee, a researcher at the university, initial hypotheses were developed, and material characterization began for mix preparation. Four different mix designs were created by students under the supervision of university faculty and laboratory technicians, ensuring compliance with relevant technical standards to obtain precise results. The mixes varied in the amount of fiber added, starting with a reference mix without fiber and then incorporating 4, 8, and 12 kg/m³ of synthetic fiber to evaluate the influence of these variations on the mechanical properties of concrete through specific tests. The results obtained confirmed the hypothesis that incorporating synthetic fibers can enhance the characteristics of concrete, allowing for reduced cross-sections and lighter structural elements without compromising compliance with the design standards established in the NSR-10. Furthermore, this approach contributes to reducing total project costs, demonstrating the technical and economic feasibility of using synthetic fibers in the construction of residential buildings.