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Steel mesh in the cement concrete pavement engineering appli

Steel mesh reinforced concrete pavement with a minimum diameter and the maximum spacing should be consistent with existing industry standard "Highway Cement Concrete Pavement Design Specification" JTG D40 requirements. When using cold-rolled ribbed steel bars, the bar diameter not less than 8mm, longitudinal reinforcement spacing should not exceed 200mm, transverse reinforcement spacing should not exceed 300mm. The vertical and horizontal steel welded mesh should adopt the same diameter, reinforced protective layer thickness of not less than 50mm. Reinforced concrete pavement reinforcement welded mesh can be welded reinforced concrete pavement with the relevant regulations.
⑴, concrete pavement structures with fixed dovetail joints expansion dowel bar can not be set, it would be adjacent to the ends of the inner structures of the plate with bunk steel mesh; or a length of about 6 to 10 times the thickness range gradually the thickness increased by 20%.
⑵, concrete pavement and bridge phase, the bridge has a slab, the slab should be provided between the laminate and the concrete surface 6 a 10mm long reinforced concrete surface layer transition board. When the bridge is of bias, the acute angle portion of reinforced concrete slab steel mesh reinforcement should be used.
⑶, the surface layer of concrete structures under the box-shaped transverse cross, its top surface to the bottom surface or embedded grassroots distance of less than 400mm, the top width and both sides of the structures, concrete surface layer should be laid double steel mesh, up and down layer from the surface layer of the steel mesh top and bottom 1/4 of a 1/3 of the thickness of the Department.
Under the concrete surface with a circular transverse cross tubular structures, its top surface to the bottom surface when the distance is less than 1200mm, the structures on both sides, should be laid within the concrete surface layer steel mesh, steel mesh in the surface layer at the top surface 1/4 - 1/3 of the thickness of the Department.
From the industry standard "Highway Cement Concrete Pavement Design Specification" JTG D40-2002