Research and Analysis of Axial Compressive Properties of Concrete Columns Strengthened with Composited Fiber Cloth

Changchun Institute of Technology, The Key Laboratory of Earthquake Disaster Reduction for Civil Engineering in Jilin Province China, Changchun 130012

Abstract

Paste fiber cloth reinforcement method is an important method in the current reinforcement project, and carbon fiber reinforced plastics (CFRP) and glass fiber reinforced plastics (GFRP) are the two most commonly used materials in the reinforcement method. CFRP have high tensile strength, high elastic modulus, and low elongation, while GFRP have lower tensile strength and elastic modulus, but high elongation. Studies have shown that the combination of two fiber materials can effectively improve the weakness of a single fiber material, make better use of the advantages of these two materials, and improve the comprehensive mechanical properties of the fiber material. Columns, as the main load-bearing components in the concrete structure system, have a significant impact on the stability of the building structure. By studying the influence of the combined fiber cloth on the compressive performance of the column, the optimal fiber cloth combination scheme was found out, which provides a reference for practical engineering applications.