Thermodinamically-Consistent Microplane Model for Fiber Reinforced Concrete under High Temperatures

Abstract

In civil engineering constructions, fiber-reinforced concrete (FRC) is one of the most used material. It is well-established that both components, fibers and concrete, experience significant degradation in their thermo-mechanical properties when are subjected to high temperatures. However, this behavior as well as its computational modeling, remain subjects of ongoing research and investigation. This work lay the foundations for a theoretical approach based on the thermodynamically-consistent Microplane Theory and Mixture Theory with the final aim to simulate the thermo-mechanical behavior of FRC under different load and temperature scenarios, obtaining comparisons of the numerical proposed theory with experimental results from the literature.