What are the common road diseases and how they are formed

2023-08-22 10:15:27 ENUO

Under the action of vehicles and the influence of natural factors, road pavement will have many road diseases. The common ones are: potholes, ruts, waves, looseness, subsidence, edge gnawing, mud turning, etc.

1. Potholes and ruts on the road surface are common phenomena in different seasons. The reason is that the maintenance is not enough or the quality of the road paving is not good, and it is deformed after driving and rolling. The emergence of these two situations should be dealt with in a timely manner according to the procedure, so as not to cause more serious road surface damage.

2. The road surface waves are due to the poor pavement quality and poor maintenance. Under the action of driving load, there are regular fluctuations, which look like "washboards", which will affect the speed of the vehicle and easily cause traffic safety accidents. Thickness of the road structure layer, fine particles of pavement materials, insufficient binder, uneven mixing during construction, and uneven rolling are all likely to cause pavement wave damage.

3. Loose pavement often occurs when the weather is dry, mainly due to low clay content, low plasticity index, uneven mixing and distribution of materials, unrealistic rolling, or insufficient maintenance work during paving. In addition, due to freezing and muddying, vehicle rolling, pavement bumps and cracks will also form loose.

4. Subsidence is caused by insufficient strength of the roadbed itself. When large vehicles drive on the road surface, if the strength of the roadbed is insufficient, potholes and ruts will appear on the road surface. Over time, there will be more and more pits, which may cause large-scale damage deep to the grassroots. Excessive subsidence of the road surface will lead to serious conditions such as subgrade muddying, and partial or entire section overhaul must be carried out.

5. Edge gnawing on the road surface is caused by insufficient maintenance, lack of soil on the road shoulder or erosion of the road shoulder by water, vehicle rolling and subsidence without timely filling and maintenance, and vehicles often driving sideways and rolling. After edge gnawing occurs, it should be remedied in time to avoid expansion, otherwise it will consume materials and labor in the future.

6. The main factors that affect highway muddying are soil quality, temperature, water, road surface, traffic load, human factors, etc. Among them, the joint action of soil quality, temperature and water is the three natural factors that form muddying. In the design, the cause of muddying was not considered carefully, the design height of the subgrade was not high enough, and the unfavorable hydrogeological zone was not avoided; the construction quality was problematic, the filling plan was unreasonable; improper maintenance, drainage facilities blockage, etc., these human factors will aggravate the hazards of road muddying.