How to determine the number of geogrid detection method
What are the geogrid testing items1) place: in the surface layer of 50cm thick sand gravel or sand (egg) gravel cushion, and compaction, which is not only conducive to improve the friction between the soil and the grid, but also conducive to the consolidation of the foundation drainage.
In the finished product cut at least 1 meters of the length of the geogrid, the radial shear of the 3, the zonal shear of the 3, and then tested, take its average value can be.
2) according to the design of the location, along the road to the laying of the grid, laying the grille, should pay attention to the connection between the grid and straightening smooth. Grille of the longitudinal and transverse joints can use nylon or polyester rope sewn or U nail connection method between the grid as a whole, grid overlapping width not less than 20cm, in the direction of the stress intensity of the joint shall not be less than the design tensile strength of materials. The grid distortion, fold, overlap, is not conducive to play its role, thus laying by hands straightened, the grid is smooth and uniform, geogrid every 1.5-2.0m paved with hook nail fixed on the ground.3) fill: after the completion of the grille, should be timely (48 hours) filling. Each layer should be carried out according to the principle of "the first two sides, the middle of the back". The packing is not allowed to be unloaded directly on the geogrid. It must be unloaded on the soil surface which has been paved. The soil unloading height is not more than 1m. All vehicles and construction machinery shall not be allowed to walk directly on the paved geogrid, but only to be allowed to travel along the axis of the embankment.4) the upper and lower sides of the geogrid, and 8 cm from the grid layer shall not be more than 6 cm in diameter.
