In road construction and maintenance, the use of high-performance geosynthetics has become an effective means to improve the stability of infrastructure and extend its service life. As an important material, biaxial geogrid has been widely used in roads, railways, airport runways, dams and other civil engineering projects due to its excellent performance.
What is a biaxial geogrid?
Biaxial geogrid is a mesh material made of high-strength polymers such as polypropylene (PP) and polyester (PET). Its characteristic is that it has high tensile strength in both the longitudinal and transverse directions by stretching in two directions. The grid structure of the biaxial geogrid can effectively enhance the stability of soil and other building materials, and is widely used in soil reinforcement, roadbed reinforcement, dam reinforcement and other fields.
Why choose bidirectional geogrid for road reinforcement
- Reason 1: Enhance soil stability and bearing capacity;
The mesh structure of biaxial geogrid effectively enhances soil stability. Its tensile strength in two directions, biaxial geogrid can evenly distribute external loads, and avoid deformation or instability of local soil due to concentrated pressure. In road construction, on soft soil or uneven soil, the use of bidirectional geogrid can significantly improve the bearing capacity of the roadbed and reduce road settlement. - Reason 2: Reduce road settlement and cracks;
Road settlement and cracks are one of the common diseases of road structures, soft soil or areas with large loads. biaxial geogrid disperse loads and enhance the overall strength of the soil, effectively reducing cracks and depressions caused by uneven foundation settlement, combining soil and other foundation materials, biaxial geogrid can not only avoid excessive settlement, but also prevent cracks in the road surface, thereby extending the service life of the road. - Reason 3: Reduce construction costs and time;
Bidirectional geogrids have significantly excellent bearing capacity and soil stability during construction, allowing the construction team to reduce the thickness of the base layer and reduce the use of traditional materials (such as stone, gravel, etc.). Bidirectional geogrids are easy to install and can be laid quickly by construction workers, reducing the complexity of the construction process and the labor intensity of construction workers. Therefore, it can accelerate the project progress and improve overall efficiency under tight construction cycles. - Reason 4: Extend the service life of roads
The service life of roads is affected by many factors, especially the strength and stability of the base layer. Bidirectional geogrids effectively extend the service life of roads by improving the compressive and crack resistance of road structures. Bidirectional geogrids can remain stable under extreme weather conditions and reduce the need for maintenance due to uneven foundations. - Reason 5: Environmental protection and sustainable development
With the increasing awareness of environmental protection, more and more infrastructure projects require the use of environmentally friendly materials in construction. As a high-performance geotechnical material, bidirectional geogrid does not contain harmful substances during its production and use, and meets the requirements of modern green construction. Bidirectional geogrid can reduce dependence on traditional building materials, such as stone and gravel, and reduce the consumption of natural resources. At the same time, the grid itself has a long service life, reducing the maintenance and repair work of the road, thereby further reducing the waste of resources and the burden on the environment.
Typical application scenarios of bidirectional geogrids;
- Highway construction: Bidirectional geogrids can improve the bearing capacity of highways and reduce road settlement and cracks.
- Railway construction: Railway subgrades often face high pressure loads and extreme weather conditions. Bidirectional geogrids can enhance the stability of track foundations and extend service life.
- Airport runways: Due to the heavy load and high frequency of aircraft use, airport runways need to have extremely high stability. Bidirectional geogrids provide a solid foundation for airports.
- Dyke reinforcement: In dyke construction, bidirectional geogrids can effectively enhance the stability of the soil and prevent structural damage caused by water erosion.
- Municipal roads and urban infrastructure: Bidirectional geogrids are often used in soft soil or unstable areas in urban road and infrastructure construction to effectively enhance soil stability.
Construction and installation of bidirectional geogrid
- Foundation preparation: Ensure that the soil in the construction area is flat and remove debris and large stones.
- Laying the grid: According to the design requirements, the bidirectional geogrid is evenly laid on the roadbed, ensuring that the longitudinal and transverse directions of the grid are consistent with the load direction.
- Filling material: After laying the grid, cover it with materials such as gravel or crushed stone and compact it appropriately.
- Compacting and leveling: After completing the filling, compact the road surface to ensure that the soil and geogrid are tightly combined.
