Research on Flexural Fracture Characteristics of Basalt Fiber Reinforced Concrete Based on Acoustic Emission Technique

In this paper, the acoustic emission features of basalt fiber reinforced concrete in the period of curing was studied by four-point bending experiment. Concrete crack propagation mechanism was analyzed, and the health monitoring was conducted by use of acoustic emission parameters. It was found that the total acoustic emission (AE) activity was directly linear relative to the curing age of concrete. AE parameters that change with the damage extent were able to describe the mechanical characteristics of basalt fiber reinforced concrete in failure process.