###### Abstract  
Adding fiber to cement concrete can improve the shortcomings of concrete, such as low tensile properties and low ductility, and improve its resistance to permeability and impact. With the advancement of science and technology, cement-based structural engineering materials with clear performance indicators, namely high-performance fiber-reinforced concrete (HPFRC), have been developed. The role of fibers in HPFRC depends on the properties of the fibers themselves, and on the mixing state of the fibers in the matrix. There are many types of fibers used in HPFRC. According to the material, it can be divided into metal fibers (such as carbon steel, stainless steel, metal glass, etc. ), inorganic fibers (such as natural mineral, artificial mineral, carbon, etc. ), and organic fibers (such as synthetic, plant, etc.). According to the elastic modulus, it can be divided into high elastic modulus fibers (such as steel, glass, carbon, and basalt) and low elastic modulus fibers (such as organic fibers). The stiffness of high elastic modulus fibers is greater than that of concrete. Once micro-cracks occur in the matrix, the fibers begin to bear force, which can share the stress on the concrete and increase the strength of the material. The stiffness of low elastic modulus fibers is less than that of concrete. They generally bear force only after the concrete cracks, thus are mainly used to improve the ductility of the material. This Extended Special Issue aimed to collect and showcase all breakthrough research into HPFRC, including innovative concepts to improve its mechanical properties, the development of new fiber technologies to improve its performance, its engineering applications, reductions of the negative impact of fibers on certain concrete properties, the influence of fiber mixing on its performance, theoretical research on the mechanisms of fiber mixing, the role of inorganic fibers and organic fibers, its mix design, bonding performance, thermal performance and fire resistance, and the durability of HPFRC wait, etc. A total of seven papers in various fields of HPFRC research are presented in this Extended Special Issue. [PERSON] et al. [1] investigated the structural response of reactive powder concrete-filled steel tube (RPC-FST) columns under blast loading. For the numerical simulation of RPC, the modified Holmquist-Johnson-Cook (HJC) model and the modified Karagozian and Case (K&C) model were used. In addition, the dynamic response of an RPC-FST column under an explosion load was analyzed, based on the arbitrary Lagrange-Euler (ALE) method. Their experimental results verified the feasibility of the proposed model. The analysis results also showed that the modified HJC model and the modified K&C model can be used to simulate the dynamic response of RPC-FST columns under explosion loads. [PERSON] et al. [2] applied self-compacting steel fiber reinforced concrete (SFRC) to tetrahedron-like pervious frames for river revetment. An experimental study was conducted on the workability and mechanical properties of the SFRC with a volume fraction of steel fiber changed from 0.4% to 1.2%, and the reasonable volume fraction for making pervious frames was determined to be 0.8%. [PERSON] et al. [3] reported the flexural behavior of high-ductility fiber-reinforced concrete (HDC). A four-point bending test was conducted on 40 mm \(\times\) 40 mm \(\times\) 160 mm specimens to analyze the flexural strength, deformation, and toughness of HDC. Their experimental results showed that the ultimate flexural strength of HDC with 2% polyvinyl alcohol fiber added was approximately 15.32 MPa, an increase of up to 221%. In addition, its deformation and flexural toughness ratios were 23 times and 1.43 times higher than those of the fiber-free specimens, respectively. [PERSON] et al. [4] investigated the effects of added waste polyethylene and ground granulated blast furnace slag (GGBFS) on the engineering properties of cement mortar.