You may have noticed that it is easy to have a variety of ruts on the old roads. The book says that there are cars in front and cockroaches in the back. With the emergence of various means of transportation, especially the ruts caused by some large locomotives on the road, the service life of the road is seriously weakened. We often link the depth of the rut with the comfort of the road and the safety of the road. To determine if the road surface is to be repaired.
Especially in the summer, all kinds of ruts and cracks are more common. At this time, it is necessary to repair the roads. This also causes inconvenience to the normal traffic operation and makes the traffic more crowded. This makes the owners have a headache. How is the rut formed? Let's take a look at it together. Due to the rheological properties of asphalt concrete at high temperature, the surface layer of asphalt road in summer is soft and sticky. Under the load of vehicle, the area of the force is concave. After the vehicle load is removed, the surface layer of the asphalt cannot be fully recovered to the condition before loading. Plastic deformation occurs, and under the action of repeated rolling of the vehicle, the plastic deformation continues to accumulate, eventually forming a rut.
In order to prevent the occurrence of ruts, geogrids are generally used to solve this problem in road construction. The use of geogrids in the asphalt overlay can reduce the rutting phenomenon in the road. Mainly because the geogrid has the characteristics of high tensile strength, low elongation and high temperature resistance, and its compatibility with asphalt mixture is good. When the aggregate of asphalt concrete runs through the grid, the composite mechanics is formed. The interlocking system will limit the aggregate movement and increase the lateral restraint force in the asphalt overlay. The parts in the asphalt surface layer will be restrained from each other to prevent the asphalt surface layer from changing and eventually resist the rutting effect.
The polymer is oriented in a linear state and forms a long elliptical network-like integral structure with uniform distribution and high joint strength. This structure has a relatively high tensile strength and rigidity, providing the ideal combination of force bearing and diffusion for the soil. The outstanding advantage of the one-way plastic geogrid is that the tendency of deformation (creep) under long-term continuous load is small, and the creep strength is much better than the geogrid of other materials, which plays an important role in improving the service life of the project. The occlusion and interlocking action between the grid mesh and the soil constitutes an efficient stress transmission mechanism, so that the local load can be quickly and effectively diffused into the large-area soil, thereby reducing the local damage stress and improving The purpose of the project's service life.
It can be seen that in order to improve the quality of roads, the occurrence of rutting needs to pay more attention to the construction. Since the addition of geogrid can be effectively solved, it must be used in road construction. This material has no substitute for the service life of the road. The role of the road has become more indispensable for road safety.