"Evaluaci´ón sísmica del concreto de alta resistencia para la optimitización preliminar del acero de refuerzo en edificaciones de pórticos regulares según NBDS2023"

Abstract

This preliminary study on the optimization of reinforcement steel in high-strength concrete (HSC) structures reveals a significant reduction in the required steel area by increasing the concrete’s strength. The advantages of HSC include the reduction of column sections, thereby improving architectural functionality and increasing durability due to its lower porosity. The technical comparison between models with conventional concrete and high-strength concrete, as established by the Bolivian concrete standard, shows that steel optimization largely depends on the structural configuration and must comply with regulatory requirements. In Bolivia, where the price of steel has increased by 50% in the last six months, the use of HSC, along with IP40 cement whose cost has remained stable, offers a viable solution. The results indicate a 30% reduction in the steel quantity in columns, maintaining similar performance in terms of durability, ductility, and stiffness, in compliance with the NBDS2023 seismic standard. This work proposes new lines of research to explore the applications of concrete in civil construction and reduce dependence on materials with variable prices.