For newly-built asphalt concrete pavement, the fiberglass grid can be placed between the semi-rigid base and the lower seal layer, or between the lower seal layer and the asphalt surface. For newly built concrete roads, the fiberglass grid should be placed between the semi-rigid base and the rigid concrete seal. For the maintenance of the old asphalt pavement, you can use the oil injection method, anchoring method, self-adhesive method, laying fiberglass grid on the original pavement. It is also possible to make 20mm-30mm fine-grained asphalt concrete leveling layer on the original pavement, then lay fiberglass grating, and then add asphalt concrete surface layer, the thickness should be 60-100mm. For the maintenance of the old cement pavement, the self-adhesive method and the oil injection method can be used to lay the fiberglass geogrid on the original pavement, or the 20mm-30mm fine-grained asphalt concrete leveling layer on the original pavement, and then lay the fiberglass grid Then add asphalt concrete surface layer, the thickness should be 60-100mm. Newly-built pavement surface layers can be anchored and self-adhesive for construction. The base layer adopts glass fiber grid, and the laying position should be placed at the bottom of the base layer, and the anchor method is used for construction. Lower subgrade. The fiberglass geogrid must be placed in the lower 1/3 of the lower base layer. It can also be placed at the bottom of the lower roadbed layer, at least 20mm thick sand cushion layer or geotextile laying under the fiberglass grid. Use anchoring method for construction.
Fiberglass geogrid reinforced concrete pavement. The road surface should meet the following requirements:
(1) The longitudinal flatness, the slope and the smoothness of the transverse road arch should all meet the design standards, if they fail to meet the standards, they should be dealt with before the additional paving.
(2) Set the load-bearing capacity of the pavement before paving. If the load-bearing capacity is insufficient, the standard is not met, or the cement concrete pavement has a slab bottom vacancy phenomenon, all should be increased * treatment. The encounters and cracks of cement concrete pavement should be cleaned and filled in advance.
(3) The original pavement and base surface are partially loose, anti-cavity and diffusion cracks should be repaired and filled in advance to keep the surface intact.
(4) The original pavement surface should be cleaned to remove dust. Loose particles and debris.