Review of the Mechanical Properties of Fiber Concrete Under Daniamic Tension and Compression

Abstract

This article is a review of the mechanical properties of fiber-reinforced concrete at high strain rates under tensile and compressive stresses. Fibre-reinforced concrete is widely used in the construction of protective structures, in tunnels, engineering structures in seismic areas, airport runways, river and marine engineering structures and is an important substitute for classic concrete. The review covers the following aspects: advantages and disadvantages of various test methods used to determine the dynamic properties of fiber-reinforced concrete; studies of the dynamic characteristics of fiber-reinforced concrete in compression and tension, including their strength, deformation capacity and ability to absorb energy. The purpose of this review is to expand fundamental knowledge about the dynamic properties of fiber-reinforced concrete and to promote further research on its physical and mechanical characteristics and applications for increasing the strength of brittle materials. At the beginning of the review, the most commonly used test setups and methods for dynamic testing are considered. The Kolsky method is most widely used to determine properties in dynamic compression, tension, and tensile splitting at high strain rates. Further, the main part of the review considers the mechanical properties of fiber-reinforced concrete under dynamic compression and tension, including strength, impact strength, and the ability to absorb energy. Studies have shown that with an increase in the rate of deformation, the dynamic strength of fiber-reinforced concrete increases. The use of an appropriate amount of fiber leads to a significant improvement in dynamic properties. However, there is a threshold fiber content. In conclusion, by summarizing and comparing previous studies, the advantages and disadvantages of existing studies are emphasized, and suggestions for further research are made.