Research Progress on Properties of Carbon Fiber Reinforced Cement-based Composites

Abstract

The application of short carbon fiber (CF) in cement-based materials can not only significantly improve the mechanical properties of the materials, but also endow them with various functional properties, such as sensitive response to temperature and pressure, self-sensing ability of stress and damage, electromagnetic shielding performance, and thermoelectric effect. Traditional cement-based materials are limited in certain special applications due to their single function, high brittleness, low tensile strength and flexural strength. In contrast, carbon fiber cement-based materials have higher strength, lower density, excellent corrosion resistance and electrical conductivity, as well as high tensile strength and elastic modulus. Therefore, they are widely favored and regarded as ideal reinforcements for various composite materials, and have received extensive attention in the field of civil engineering in recent years. The instability of interfacial bonding performance in carbon fiber cement-based composites. Due to the difficulty in achieving ideal bonding between carbon fibers and cement-based materials, weak spots may form at the interface, thereby affecting the bonding performance, which to some extent limits their reinforcement effect on the cement matrix.