Reinforcement is one of the principles that has always been considered in the performance of concrete structures and has a great influence on their strength. Reinforcement enhances the tensile strength of the structure and strengthens it against environmental stresses. This method is one of the most basic methods in the creation of modern buildings and makes the structure acceptable in terms of engineering principles. Reinforcement should be fitted with a suitable size rebar to ensure the strength of the structure. In the fitting of the armature, the rods are arranged together in a special order and are connected by metal fastening or cold welding. Reinforcement is performed in the form of curved and locked rods for the construction of columns and foundations of the building and in the form of a few simple rods joined together for roofing. Bending of bars for reinforcement is done by different methods, each of which is suitable for different structures. In general, reinforcement is performed in three regular, nodal and Croatian methods. Cold welding is used in all three methods to hold the bars together because conventional welding reduces the tensile strength of the reinforcement due to the lack of flexibility. Reinforcement has the following advantages:
The strength of concrete structure is increased by reinforcement against factors such as fire and moisture.
Reinforced concrete does not require maintenance costs.
Construction of concrete structures requires less skill than steel structures.
Reinforcement is one of the most important factors preventing the building from deviating from its primitive state.
Concrete reinforcement can be shaped into different shapes.
Reinforced concrete has a high compressive strength compared to other building materials.
Reinforcement plays an important role in increasing the tensile strength of the structure.
For the construction of columns, foundations and reinforcement dams, the best option is to increase the structural strength.
Methods of fastening rebar by wire
The shape of the bars in the reinforcement plays an important role in the concreting and for the concrete to reach different points. When constructing columns that use large-size rebar, try to allow more space for the reinforcement and molding to reach the concrete. For lower parts of the reinforcement, insulation should be used to prevent soil moisture from reaching the structure and destroying it. Before concreting, the reinforcement must be checked by the engineers as it may be torn as a result of relocation or other wire construction work. Therefore, if the wire is loose or loose the wires should be re-closed. Reinforcing bars are closed in two ways:
The Crucifixion Method
In this method, the two bars are placed over each other and the wires are crisscrossed below and above them. The ends of the two ends of the wire are then screwed together using pliers. Finally, the excess wire is bent downwards so that the tip of the wire does not cause any problems.