Causes of damage and repair process of potholes on asphalt pavements on highways
The causes and repair process of potholes on asphalt pavements on highways is a technical system for analyzing and repairing potholes on asphalt pavements, covering the cause mechanism and repair methods. This process is applied to the field of highway pavement maintenance to ensure road safety and durability.
The main causes of damage include excessive porosity in the permeable asphalt layer leading to water seepage, segregation of the base mixture leading to insufficient strength, and the formation of an isolation layer due to the failure to clean the base slurry, which causes mud gushing. The repair methods are divided into three categories: cold material cold repair, hot material hot repair, and hot material cold repair: the cold repair process is easy to operate and suitable for emergency repairs but has poor durability; the hot repair process achieves deep repair by heating recycled asphalt and has a longer service life; the hot material cold repair adopts a layered filling strategy, with temporary repairs first and secondary hot repairs in the rainy season.
In the early days, cold repair technology was the main method, and hot repair technology was gradually promoted with the upgrading of mechanical technology. Hot repair uses radiation heating regeneration technology to improve the repair effect, and in some scenarios it can reach permanent repair standards. Hot material cold patching is an adaptive improvement solution, combined with emergency repair and long-term maintenance needs, to form a composite model for seasonal disease treatment.
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