The ability to design a paving sheet that can vary in size to fit the joint spacing, saves time and money in jointed slabs. Prefabricated Mesh Reinforcing controls cracking by placing steel where it is needed and to assure accurate placement. The main purpose of the Prefabricated Mesh is not to prevent cracking, but to keep cracks that form held together. The pavement will then carry its design load as though it had not cracked.
Joint spacing is important in the design of airport pavement because the ¡°down-time¡± due to maintenance of joints is critical. Airport paving differs from highway paving in several ways. Obviously the thickness is greater due to the larger loads, the pavements are wider and aprons and warm-up areas are joined at all four edges. The thickest pavement is required to support standing or slow moving aircraft and joints are placed further apart. The joint material must be capable of resisting the spillage of jet fuel.
In slab-on-ground design, slab thickness is a function of the modulus of rupture of the concrete. This brings us to the evident conclusion that the concrete is not supposed to crack. Since the normal role of steel rein- forcement hinges on the fact that the concrete must crack for the steel to perform, the designer is faced with a paradox.
Using Welded Wire Reinforcing Mesh in retaining walls can take advantage of Welded Wire Reinforcement¡¯s strength and ease of placement to achieve greater economy. Since retaining walls are expected to perform for many years, it is important to place the reinforcement within tight tolerances to assure adequate cover. The fact that Welded Wire Reinforcement can be precisely placed in a sheet and held rigid by welding will make it easier to get a quality product.
The Greatest benefits of Welded Wire Mesh are enjoyed when it is used as a structural material in slabs. In many cases the most critical work in connection with the erection of reinforced concrete structures, is the accurate spacing of the reinforcement inorder that a slab can safely sustain superimposed loads.
Prefabricated Mesh is finding increasing applications in the reinforcement of precast concrete units because of its high strength, crack control properties and the fact that it is a prefabricated reinforcement and consequently it is very easy to fix in position. Fabric is also used extensively to reinforce in-situ toppings applied as composite slab with precast pre-stressed concrete structural members. In this field of application, which is generally of a repetitive nature, the economics of scale of factory manufacturer of reinforcement fabric supplement the economics of scale of factory production of pre-cast concrete.
Welded Wire Mesh has several other applications such as Bridge Deck Slabs, Piers, Manhole Chambers, Columns, Parking lots,Swimming pool, Culverts, Canal lining, Tunnels.