Abstract: With the rapid increase of global population, the acceleration of urbanization and modern industrialization, the consumption of coal and oil, two major fossil fuels, has been continuously increased in recent years. A large amount of sulfur and nitrogen oxides will be generated during combustion of the fossil fuels. When these oxides are emitted into the atmosphere, secondary pollutants like sulfuric acid and nitric acid are formed, and finally the acid rain will come into being as they encounter with rain, snow, fog, etc. China is the third largest acid rain area in the world. Acid rain does great harm to aquatic ecosystems, terrestrial ecosystems, human health, buildings and so forth, causing enormous economic losses over the world. Therefore, it has become a major environmental issue that has aroused global concern. Concrete structures have been widely applied because of theirs convenient material extraction, favorable moldability, low price, high compressive strength and satisfactory fire resistance, which is one of the most important structural forms in China. Nevertheless, there are a large amount of basic compounds in concrete material, the neutralization reaction can take place between these basic compounds and acid rain, which leads to the dissolution of surface hardened cement and deterioration of the material surface, and further the degradation of the physical and mechanical properties. Meanwhile, the passivation film on the surface of the steel bars are destroyed due to the decrease of concrete alkalinity, and the steel bars are rusted. The corrosion products make the concrete members to expand and crack, causing the durability failure of the concrete structures. The influence of acid rain on the durability of concrete structures has attracted wide attention. At present, researches on acid rain corrosive concrete by scholars at home and abroad mainly focus on: Ⅰ. corrosion mechanism and deterioration law of acid rain on cement concrete, Ⅱ. the effects of acid rain erosion medium, pH value and the type of mineral admixture on the erosion properties of concrete materials and components, Ⅲ. different methods of accelerated acid rain erosion test. (There are few studies in this area, especially the outdoor exposure test of concrete structures), Ⅳ. the static and dynamic mechanical properties of concrete structures eroded by acid rain. (It still lack intensive study about this aspect). Accordingly, in order to clarify the erosion behavior of acid rain on concrete structures, this article reviews the worldwide researches about the impact of acid rain on the concrete durability in recent 30 years, and focuses on the effects of acid rain on the static and dynamic mechanical pro-perties of concrete structures. Firstly, the corrosion mechanism and deterioration process of acid rain on concrete materials are described in detail. Secondly, the test methods of accelerated acid rain corrosion and the related research work of influence of acid rain on the mechanical properties of concrete structures are summarized. Finally, some important issues concerning the research of acid rain eroding concrete are discussed, and some suggestions for further research are proposed.
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2019, Vol. 33 
