Fiber-reinforced concrete in high-temperature environments: In-depth survey on mechanical performance and rheological features

Abstract

The successful automatic performance of fiber-reinforced concrete (FRC) has led to its widespread application; adding fibers affects its novel properties. It is anticipated that concrete's long-term qualities will be impacted by its workability. A comprehensive assessment of the mechanical performance and rheological properties of FRC is given in this study. It presents more detail on how the FRC behaves in searching temperatures and provides an analysis of several heating as well as cooling methods along with the way they affect test outcomes. The study explores how reinforcing fibers, aggregates and substitute materials affect FRC's fire resistance. In particular, the concept of workability, which is a crucial quality in concrete, is studied and rheological models that make use of several rheometers are developed to clarify the rheological behavior of FRC. Several techniques to improve rheological functionality and performance are revealed in this study. The findings highlight the conflicting characteristics of fibers that can enhance the mechanical aspects of cement while reducing its fresh and rheological qualities. A comparable set of benefits and drawbacks complement FRC's fluidity. The research examines feasible approaches to regulate the rheological characteristics of FRC, thereby simplifying and improving the mechanical performance and workability of FRC.