What criteria should be used in the construction of Geogrid
Is a reference to the construction specifications of the geogrid can be found in the library.
1, the construction site: requirements compaction flat, horizontal, removal of the protrusion. 2, in the formation of compaction: Geogrid laying site, installation of the grid the main stress direction (longitudinal) should be perpendicular to the axis of the embankment, laying should be smooth, no wrinkles, as far as possible tension. With the plug pin and the earth pressure is fixed, the laying of the grille main stress direction is best long without joint connection between the amplitude and the amplitude of the manual banding lap, lap width not less than 10cm. If the grid is set above two layers, the seam should be staggered. After laying a large area, the overall adjustment of its flatness. When the cover of a layer of soil, not rolling before, should be used manually or machine tensioning grid, the strength should be uniform, so that the grid in the soil for the tension state. 3, the choice of packing: packing should be selected according to the design requirements. Practice has proved that, in addition to frozen soil, swamp soil, domestic waste, chalk, diatomite can be used as filler. However, the mechanical properties of gravelly soil and sandy soil are stable, and the water content is very small. Packing size should not be greater than 15cm, and pay attention to control the packing gradation, to ensure the compaction weight. 4, the packing of the paving and compaction: when the laying of the grid positioning, should be filled in a timely manner, the exposure time shall not exceed 48 hours, can also take the side of the laying of the backfill flow shop. First spread the filler at both ends, the grid will be fixed, and then to the central propulsion. Rolling sequence is the first two sides after the middle. When the roller compaction can not directly contact with the reinforced material, the non compacted reinforcement generally do not allow the vehicle to travel on the above, so as to avoid the dislocation. The degree of compaction is 20-30cm. Pressure...
A brief introduction of geogrid:A grille is made of polypropylene, PVC polymer and thermoplastic or molded by two-dimensional grid or a certain height of the three-dimensional mesh screen, when used as a civil engineering, called geogrid. Geogrid is a kind of main geosynthetics, which has unique properties and effects compared with other geosynthetics. Geogrid is often used as reinforcement of reinforced soil structure or composite material. Geogrid is divided into four categories: plastic geogrid, steel plastic geogrid, fiberglass geogrid and polyester warp knitted polyester geogrid.
