The influence of fiber content and voltage on the impact resistance of carbon fiber reinforced concrete

Abstract The method of machine test was used in this study to analyze the influence of carbon fiber content and voltage strength on the impact resistance of carbon fiber concrete by recording the number of impacts to carbon fiber concrete fracture failure. The results show that as the volume content of carbon fiber increases, the impact resistance to the specimens increases first and then decreases. The impact resistance reaches maximum that the content of 0.24 %, and the calculation formula for the number of impacts to concrete beams under different carbon fiber content in the test is obtained. However, the impact resistance is in a state of overall reduction under the action of voltage, and the reduction range is obvious, indicating that the voltage effect has a negative impact on the impact resistance of carbon fiber concrete.