Factors influencing the effect of environment on concrete structural materials
July 18th, 2024

The durability of concrete structures refers to the ability of concrete structures and their components to resist atmospheric influences, chemical erosion, and other degradation processes within the expected service life under foreseeable working environments and internal material factors, without requiring significant maintenance costs, while maintaining their safety and applicability. The durability of concrete structures is a comprehensive issue that is influenced by multiple factors at four levels: environment, materials, components, and structure. The service environment of concrete structures is the most important and direct factor affecting their durability. Under the influence of one or more external environments, the durability of concrete materials will deteriorate, leading to neutralization or cracking of the concrete. The durability research and design of concrete structures are both based on distinguishing the types of service environments. The environmental factors affecting concrete structural materials mainly come from two aspects: environmental climate conditions and environmental erosion media. Factors related to environmental and climatic conditions include temperature, humidity, precipitation, freeze-thaw cycles, wind pressure and speed, etc; Factors related to environmental erosion media include oxygen, carbon dioxide, chlorides, sulfur dioxide, sulfates, carbonic acid, etc. in the atmosphere, water bodies, and soil.


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