Research on the Influence of Rainwater Erosion on Reinforced Concrete Structures and its Protection Methods

Abstract

Today, global temperature warming and industrialization have exacerbated the problem of acid rain, resulting in severe erosion risks of reinforced concrete structures. Reinforced concrete structures are widely used in daily life, especially in bridges, buildings, water conservancy and other infrastructure. Studying the erosion principle of reinforced concrete structures by rainwater and the protective precautions of the structure can reduce the maintenance cost of reinforced concrete structures, put forward suggestions for modern protective measures, more rational use of resources, maximize the realization of green buildings, and reduce energy consumption. This paper analyzes and summarizes the erosion principle of reinforced concrete structures by rain: The acidic substance in the acid rain will undergo an acid-base neutralization reaction with the cement, thus increasing the porosity. In addition, cement stone and carbon dioxide undergo a carbonization reaction, thus reducing the pH value of the internal environment of the structure, resulting in corrosion of the steel bars. Thus, affecting the bonding performance of the reinforced concrete interface, and further affecting the overall bending and compressive resistance.