Abstract
Concrete structure will be corroded under acid rain scouring and soaking for a long time, which has a great influence on its durability life. In order to further study the damage characteristics of fiber reinforced concrete under acid rain erosion, the formation mechanism of acid rain and its influence on the corrosion and deterioration of concrete and fiber materials were analyzed in this paper. Taking basalt fiber concrete as an example, the characteristics such as porosity, compressive strength and mechanical indexes were studied and analyzed. Moreover, the reasons for the optimal fiber content was briefly analyzed. The results show that the inner structure of basalt concrete mixed with 0.1% fiber was the most stable and the corrosion resistance was the most satisfying.This conclusion has certain reference significance for the corrosion damage research of fiber reinforced concrete.
Highlights
The durability damage of structure caused by natural environment is a prominent factor restricting the current engineering structure life
With the development of technology, various fiber materials are widely used in engineering structures
SO3, NOX and other products produced from the combustion of fossil fuels can combine with water molecules in the rain, snow, hail and other precipitation forms to form acid deposits, which are the main forms of acid rain[4]
Summary
The durability damage of structure caused by natural environment is a prominent factor restricting the current engineering structure life. Among the causes of durability damage of concrete, such as corrosion, freezethaw and carbonization, acid rain, as a typical source of erosion, is one of the current hot research directions in structural durability damage[1,2]. Under long-term acid rain scouring and acid solution soaking, various types of geotechnical structures such as houses, bridges and dams in acid rain areas will suffer varying degrees of damage. With the development of technology, various fiber materials are widely used in engineering structures. The application of new materials has improved the load-bearing capacity and performance of the structure under conventional conditions, the impact of new materials on the structure in various harsh climates and environments still needs to be explored urgently[3]
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