Experimental Study on Mechanical Properties of Carbon Fiber Reinforced Concrete

To investigate the effects of different water-cement ratios and carbon fiber content on the compressive and splitting tensile strength of concrete, this experiment was designed with four water-cement ratios and four carbon fiber contents. The four water-cement ratios were 0.35, 0.38, 0.41, and 0.44, while the four carbon fiber contents were 0%, 0.3%, 0.6%, and 0.9%. The experimental results showed that: 1. The compressive strength and splitting tensile strength of concrete initially increased and then decreased with the increase in water-cement ratio and carbon fiber content, reaching their maximum when the water-cement ratio was 0.38; 2. When the carbon fiber content exceeded 0.3%, the uneven distribution of carbon fibers within the concrete weakened the interfacial bonding properties, thereby reducing the strength of the concrete.