Metallum -airmsman is a universal material, without its use it is impossible to imagine any industrial construction, it is also used in private construction. The main purpose of the reinforcement is the creation of a strong design inside reinforced concrete products. Metallum -airmater is produced by various configurations, its concept includes a bar, rod, channel, corner, beam, wire. Elements of reinforcement have a classification according to the degree of flexibility. Tight reinforcement includes channel, two -tank beams, corners, rod, wire and rod to a flexible one. The latest type also includes reinforcing nets.
There are several more classifications of reinforcement, for example, when classification by location in the design, the reinforcement is divided into the following types:
Transverse reinforcement prevents the formation of cracks located inclined.
· Longitudinal reinforcement prevents the stretching of the structure and does not allow vertical cracks to form.
If we consider the purpose of the reinforcement used, then the following types can be distinguished:
· Workers, the application of which is justified by the conduct of the load on the load, the reinforcement makes efforts from the main structure.
· Constructive reinforcement distributes the load on the supporting element, the calculations on its use are carried out according to the minimum reinforcement values.
· Installation reinforcement is used for ligaments of various types of reinforcement among themselves.
· Half reinforcement are used when pouring reinforced concrete products in order to ensure their further connection.
Some varieties of reinforcement are more popular in construction and industry. These include reinforcement A1, A3, AT 800.
A1 reinforcement is a smooth rod without corrugation, has a length of 6 to 12 m, can be delivered in the form of a bay with an arbitrary length of the rod, is made of low alloy and carbon steel. This type of reinforcement for reinforcing ceilings and walls is applied, as well as in the manufacture of reinforced concrete structures. Produced according to GOST 5781-82.
A3 reinforcement is a reinforcing rod with a corrugated surface, which is used to enhance the elements made of reinforced concrete installed both under voltage and without it. It is also made like A1 of low alloy or carbon steel. Produced according to GOST 5781-82.
AT800 reinforcement is a reinforcing corrugated rod made in accordance with GOST 10884-94. For the manufacture of this type of reinforcement, a special thermally hardened steel is used, so AT800 reinforcement refers to high -strength types of reinforcing products. Various lengths are made, used for reinforcement in the manufacture of various reinforced concrete structures.
Metal reinforcement is made in several ways.
Drawing technology is used in the manufacture of small -diameter metal airmature, up to 6 mm in diameter. This technology is uneconomical and costly, when it is used, the cold bar is repeatedly stretched through the holes of a certain diameter.
In the manufacture of reinforcement by cold deformation, steel acquires certain properties that allow it to use it in places where increased stability and strength are required.
The most common method of making reinforcement is a longitudinal rolling of steel. In this method, the metal strip stretches between the rotating rolls that give it the necessary shape. The method is quite economical and allows you to get reinforcement with given qualities.
