Ultra-High-Strength, Glass Fiber-Reinforced Concrete: Mechanical Behavior and Numerical Modeling

The results of a study on the mechanical behavior of a newly developed ultra-high-strength, glass fiber-reinforced concrete (UHS-GFRC) material are presented. Third-point bending experiments, direct tension experiments, and finite element analyses were used to study the material's responses under various loading conditions, and an understanding of the tensile failure characteristics and their relationship to flexural response was developed. Elastic and post first-crack stiffness moduli were determined, as were first-crack strength and a recommended tensile failure function based on the influence of randomly distributed glass reinforcing fibers Finite element analyses using the measured tensile failure function were also used to model flexural response. and comparisons are made to the third-point bending experimental data.