Why Use Steel For Concrete Reinforcement?
By nature, concrete is a material that is brittle, and it does a good job when it is compressed. While it becomes stronger, it is still less when it comes to the active tension. Reinforcement concrete is mainly used for absorbing the tensile forces so that the structure of the building is not weakened. Steel has been used for many years in the form of bars or meshes for the purpose of reinforcement. Steel mesh is also used in slabs that require some form of crack control. Bestbar makes the steel reinforcement mesh that can be used for the concrete. doityourself.com has also mentioned that using steel reinforcement helps in improving the strength of the concrete.
Steel reinforcement slab is required for structural abilities while choosing them; one has to choose high-tensile steel bars. Fabric meshes can also be used for the same, but this has to be done only by expert engineers. These steel meshes are available in different sizes and wire sizes also. Ranging 5 mm to 9 mm, the wire thickness may vary. Another name for the mesh is fabric which is the steel mesh available in meshes in different lengths. One can cut the fabric according to the requirement. These sheets can also be overlapped, and the two layers can be lashed together with the use of tie-wire.
One of the most commonly used fabrics is the 6 mm, 7 mm and 8 mm wires. The 6 mm wires are used while making a 100-mm thick slab which can be used for driveways, garage bases, etc. 8 mm wires are used in cases where heavy-duty to make 150 – 200 mm slabs. For lighter slabs, a single layer fabric is used, and for heavier ones, two layers of fabric on top and bottom is used. Depending on the thickness of the base that is constructed, the wires are used.
Making a base involves using layers of different materials that are reinforced together. The steel fabric from below is supported by pad stones that are mostly broken and pressed into concrete. Sometimes plastic or steel that is made specifically for this purpose can be used. The supports are spaced out in such a way that they are 600 mm apart. While making the bases, one has to remember some key facts. There should always be a minimum of 50 mm cover above the steel mesh reinforcement. The reinforcement should never sag, and it must be tightly packed.
Steel bars with high tensile strength is used for making pavement slabs. But sometimes they are also used for making ground beams and vertical structures. Steel bars are also used for garage and also slabs for houses and rafts. In other words, wherever brick laying is involved, the steel bars can be used.
Some of the main advantages of using steel mesh are that it prevents cracks and in case some cracks do form; they are closed as the steel mesh holds them together. By using the steel across the joints, you avoid it from creating more cracks. Therefore, using steel mesh is a very good way of preventing the cracks and making a solid concrete.