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What are the common diseases and causes of asphalt pavement?
March 22th, 2022
Asphalt pavement is the most widely used pavement type at present. The mixture composed of aggregate, mineral powder material and asphalt binder in a certain proportion has strong water permeability, durability and damage resistance, and can effectively prevent pavement damage caused by natural factors and vehicle load.
What are the common diseases and causes of asphalt pavement?
1. Pavement depression
If the proportion of asphalt mixture is not up to standard, the mixing is unreasonable, and the temperature difference between the inside and outside of the mixture is large, it is easy to lead to rutting disease of asphalt pavement. In addition, the asphalt mixture rolling stage is not operated according to the regulations, the rolling is unreasonable, and does not meet the pavement compaction density standard, resulting in insufficient pavement bearing capacity, which is easy to lead to rutting on the pavement after opening to traffic.
3. Pavement cracks
The raw materials of asphalt mixture do not meet the standard or the road settlement is easy to cause cracks in the pavement; The pavement drainage system is not perfect, resulting in poor pavement drainage and long-term rain immersion, which is also easy to lead to cracks in the pavement; High or low temperature, large temperature difference between day and night, long-term overload rolling of pavement and other factors will cause cracks in asphalt pavement.
What are the common diseases and causes of asphalt pavement?
1. Pavement depression
In case of rain and snow during construction or when it is put into use later, some roads are prone to pavement depression. The main reason is that the subgrade construction quality is not up to standard, and the work and materials are cut corners during the construction period.
If the proportion of asphalt mixture is not up to standard, the mixing is unreasonable, and the temperature difference between the inside and outside of the mixture is large, it is easy to lead to rutting disease of asphalt pavement. In addition, the asphalt mixture rolling stage is not operated according to the regulations, the rolling is unreasonable, and does not meet the pavement compaction density standard, resulting in insufficient pavement bearing capacity, which is easy to lead to rutting on the pavement after opening to traffic.
3. Pavement cracks
The raw materials of asphalt mixture do not meet the standard or the road settlement is easy to cause cracks in the pavement; The pavement drainage system is not perfect, resulting in poor pavement drainage and long-term rain immersion, which is also easy to lead to cracks in the pavement; High or low temperature, large temperature difference between day and night, long-term overload rolling of pavement and other factors will cause cracks in asphalt pavement.
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