At present, the foreign high-grade highway construction almost all use geosynthetics, our country is also used. With the same thickness of asphalt pavement, the road using geotextile not only improves the quality but also prolongs the service life of 31 B years, thus reducing the maintenance cost.
The application of Geotextile in highway construction can effectively reduce the rutting deformation and prevent the fatigue damage of the road with reflective cracks. The new roads in our country are more than 300,000 km per year, and more than 10,000 of the geotechnical composites are needed in the construction of weak sections and high grade highways. In expressway construction, the use of geotextile can reduce the thickness of gravel cushion, and make the slope of the highway become steep, reduce the amount of earthwork, less occupy land. such as the Shanghai-Nanjing Expressway in the soft soil and settlement of the construction plan of paving geotextile, to prevent road subsidence, reducing the sand and asphalt consumption of the project cost reduced by about 5%. Therefore, the construction process in order to conserve resources, the use of geotextile can not be less.