Neutralization evolution of concrete under acid rain and carbonation erosion: a review

摘要: Concrete structures in atmospheric environments are constantly affected by acid rain and carbon dioxide erosion, and the evolution of concrete neutralization is an important factor influencing the long-term performance of the material. To deepen our understanding of the long-term performance evolution mechanisms of concrete, this study reviews the mechanism of acid rain and carbonation neutralization, summarizes studies regarding the evolution of the macroscopic properties and microstructures of concrete, and discusses the internal and external influencing factors and prediction models for concrete neutralization evolution. A thorough analysis of existing studies reveals that the microscopic properties and microstructures of concrete undergo a process of optimization followed by decay in response to acid rain neutralization. The expansion products from acid rain can lead to the deterioration of concrete …