![]() ![]() It serves the same purpose as wire mesh: enhancing concrete’s flexural strength and preventing cracks.įiber mesh or fiber reinforcement can be used interchangeably with wire mesh in flooring applications. These are available in steel, stainless steel, and polymer varieties. Wire Meshįiber mesh is widely used in construction. The application would determine which of these is the better option. Thicker rebar offers more significant support and flexural strength enhancement than rebar, but this isn’t always needed in the structure. Rebar’s cost depends on the bar’s thickness and thus varies considerably. Wire mesh is generally cheaper to use than rebar since it utilizes only thin steel bars. While rebar is suitable for use in any structure poured at any angle, wire mesh is only suitable for horizontal slabs. ![]() These are positioned before pouring the concrete and tied together with thin wire ties to prevent movement during the pour. Often, spacers are placed underneath the mesh to keep it in place.Ĭonversely, rebar comes in single bars of varying thickness cut to size on the construction site. These sheets are cut to size on the construction site and positioned before the concrete is poured. Wire mesh is made of thin steel bars tied together in a square mesh pattern. That’s where the similarity ends, though. Wire mesh and rebar are both made of steel and used to reinforce concrete. If cracks start to form in some concrete areas, it can only travel until it reaches the mesh, where crack propagation is halted. Since the concrete must move with the mesh, the mesh prevents it from giving way. However, the wire mesh is capable of withstanding this applied load and only flexes slightly. When a flexural load is applied to the concrete, its natural inclination is to give way and form cracks. The hardened concrete grips onto the wire mesh, thus the two can’t move independently. Here’s how including steel wire mesh in concrete increases the flexural strength: Steel, on the other hand, has high flexural strength. For perspective: its compressive strength is roughly ten times greater than its flexural strength. Here, the wire mesh allows the concrete some internal movement while preventing excessive movement that would cause crack formation.Ĭoncrete, while strong in compression, is weak under flexural loads. Since the concrete and wire mesh shrink and expand to the same degree. The degree of this expansion is indicated by the thermal expansion coefficient, which is the same for steel and concrete. Concrete shrinks and expands during temperature changes. When freshly poured concrete sets around wire mesh, it grips onto the mesh, which effectively inhibits its internal movement in the horizontal plane. Wire mesh on concrete functions as reinforcement, preventing crack formation during temperature changes and under flexural loads. Wire mesh is available in stainless steel and polymer varieties, too, although these are often more expensive. This is generally manufactured from steel and sold in large sheets, cut to size on the construction site. Wire mesh is a steel grid used to reinforce concrete. ![]()
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