The interface characteristics between the surface layer and the base layer in airport cement concrete pavement structures are one of the key factors determining the stress state and long-term durability of pavement panels.
Although some projects use asphalt isolation layers to achieve functions such as waterproofing, isolation, and stress buffering, practice has shown that such structures often cause diseases such as “wide false joints” (referring to false joints with abnormally increased joint widths), reflective cracks, and uneven support.
This article is based on the principles of mechanics and pavement design theory, analyzing the mechanism of asphalt isolation layer in stress transmission, friction characteristics, and temperature response.
Combined with engineering examples, it reveals the inherent mechanism that leads to the deterioration of the stress state of the pavement layer, aiming to provide theoretical reference and practical basis for the design of airport cement concrete pavement structures.
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