| Product name | Inventory status |
|---|---|
| coil 5/5 | Available |
| coil 6 | Available |
| coil 8 | Available |
| Branch 8 | Available |
| Branch 12 | Available |
| Branch 14 | Available |
| Branch 16 | Available |
| Branch 18 | Available |
| Branch 20 | Available |
| Branch 22 | Available |
| Branch 25 | Available |
| Branch 28 | Available |
| Branch 30 | Available |
| Branch 32 | Available |
Rebar is one of the most widely used metal materials in the construction industry. This product, which is also called steel reinforced concrete structure, is used to strengthen the building against any accident. In addition, there are different types of rebar available in the market, each of which has its own characteristics and is used for different purposes. The classification of this product is based on the degree of malleability, appearance and even on the basis of resistance. Stay with us to explain more about this product.
Rebar is considered a type of solid profile, which has a small width and a long length. This type of steel is used for the construction industry. Concrete has low tensile strength and in order to solve this problem, rebar is also used in it. Before the concrete is poured, the rebars together with the wire form a reinforced concrete structure. Then, each reinforced concrete structure is placed in the building and its interior is filled with concrete. Finally, with the drying of the reinforced concrete structure, the rebars increase the tensile strength of the concrete.
Rebar, like iron beams and other profiles, has different types, including simple and ribbed products. Each of these types of rebars are used to connect concrete better. The most important reason for using rebar in construction is to prevent concrete from breaking and cracking. At the same time, the resistance of the building is multiplied.
Concrete is one of the most resistant materials used for buildings. so that it is difficult to crush and destroy it. But concrete alone does not have this volume of resistance and is fragile due to lack of tensile strength. Therefore, rebar is also used in concrete structures to ensure the tensile and torsional strength of concrete.
In general, the use of rebar types can be categorized as follows:
This product is used to increase the resistance of buildings against designed loads (in multi-story buildings).
In order to reduce cracking and stresses caused by temperature changes and natural events (earthquake), the local resistance of the building should be increased. This work is done with the help of concrete and rebar.
There are holes inside the concrete material that will collapse very soon if the rebar is not placed in it. The use of this steel product causes tensile loading of concrete columns. This composition is completed with the help of mortar and grout.
All types of rebars available in the market
Rebar profiles have different types, including the following:
It is one of the most widely used types of steel rebar, which has various dimensions and shapes. Also, this product is produced with different dimensions and sizes. During the production of this type of rebar, its surface is polished.
Another type of reinforcement available in the market is used to increase the resistance of shear forces of concrete columns. Also, these products prevent the spread of cracks in the column. Khamut rebar is also used to prevent protrusion of the longitudinal reinforced concrete structure.
If you want to increase the tensile strength of concrete, you should go for straight rebar. This product prevents injury and damage to the building by increasing the tensile strength and flexibility of concrete columns.
They use this product in order to establish a complete connection between the chamout and longitudinal rebar. Also, if you want to increase the shear resistance of the dampers, you need a pin bar.
It is another type of rebar available in the market, which is used in concreting the foundation and floor. This product should be placed in two consecutive horizontal grids with a certain distance inside the mold.
It is another rebar profile that is often placed between two tables of reinforced concrete structures. This concrete structure product holds vertical or longitudinal reinforcements in the concreting of slabs and walls.
If you want to increase the resistance and tolerance of negative anchors in beam supports, you need Edka type rebar. This product also increases the tolerance of shear forces.
There are two types of rebar products in the market, simple and ribbed. There are many companies in Iran that are active in the production of this product. This product is classified into different groups based on a (Russian) standard, which includes A1, A2, A3 and A4.
Companies introduce various products in the market, each of which has unique dimensions, sizes and looks. But their diameter and length are almost the same. In this way, the diameter of most rebars in the market is between 6 and 60 mm and their length is 12 meters. If the diameter of the rebar is less than 10 mm, it is supplied in coil form.
If we are to name the features and technical specifications of this product, it includes the following:
When we talk about the coefficient of thermal expansion, it means that the volume, length and area of a product must change with temperature change. This flexibility prevents breakage and cracking. Since the coefficient of thermal expansion in steel and concrete is very similar, additional deformation and stress are not created in reinforced concrete structures. In other words, their shape does not change due to expansion and contraction. Buildings that are in environments with continuous temperature changes have higher resistance with these materials.
Elasticity is the ability of an object to return to its original state. One of the most important technical and mechanical characteristics of rebars is having this property, which is estimated at around 200 GPa. Of course, it is different for rebars with different dimensions and sizes. But if the elasticity value is less than 200 MPa, you should use more rebars to increase its elasticity. Otherwise, concrete columns will crack very soon.
Steel bars retain their elasticity before reaching yield strength. Therefore, if less load is applied to them from the yield point, as soon as the load is removed, the reinforced concrete structure will return to its original state. Of course, provided that the yield strength of the rebar is between 275 and 690 MPa. This value is true in all rebars of any size and dimension.
Another technical characteristic of rebars available in the market is that they are not resistant to oxidation. This steel product rusts very quickly in the vicinity of oxygen and moisture. But when it is placed inside the concrete, its pH rises above 12. As a result, like a cover for the rebar, it prevents it from rusting and rotting
Acid jacking is a problem that occurs if there is a gap between the concrete and the rebar. In this way, the concrete does not completely cover the rebar. After some time, the rebar rusts and expands. Occupying more space also causes pressure on the concrete, which will result in cracking of the concrete column.
Another feature of a rebar for construction is to withstand high temperatures before changing their resistance and ductility properties. Therefore, if the reinforced concrete structure is damaged for any reason (fire) and leads to the deformation of the steel rebar, you can still use the rebar to rebuild the structure.
If the properties of the material are the same in different directions, it is called isotropy. Steel bars have the same property. Therefore, the shear strength of those walls is equal along their length.
Fatigue means that the material’s resistance to cyclic loads is reduced. The amount of this fatigue is done by performing the test on the steel product. Although many engineers have emphasized that rebar fatigue does not have much effect on the instability of reinforced concrete structures.
Just like beams and gutters, rebars are used in concrete for several reasons, which include:
One purpose of using rebar is to strengthen concrete. This steel product, which has different grades and grades and is produced in a simple and ribbed form, greatly reduces the possibility of concrete breaking. Ribbed rebars allow their ribs to be more firmly embedded in the concrete and increase the strength of this structure. For this reason, the role of rebar in reinforced concrete structures is vital.
Although concrete is a very strong and strong composite material, if pressure is applied to it from the center, it is easily stressed and cracks. For example, imagine a concrete beam in a concrete frame that is supported on two sides by several columns. Now there is no column in the middle of this concrete beam. If pressure is applied to the middle part of this concrete beam for any reason, it will split in half. To prevent this from happening, he places ribbed bars in the middle of the concrete beam to strengthen it. Now, whatever pressure is applied to the beam, nothing happens. Because the rebar absorbs and neutralizes the pressure.
When the rebar increases the strength and strength of the concrete structure, there is no reason to increase its thickness. When the concrete structure becomes elastic with the help of rebar and resists cracking and breaking, there is no need to make it thicker. At the same time, it is easier for you to install a thinner concrete structure. Saving costs is one of the advantages of reducing the thickness of concrete, which is done with the help of rebar.
Rebars available in the market are classified into different types based on their strength, dimensions and appearance. If we are to categorize them in terms of shape, there are three types of simple, ribbed and coiled (complex brick) available in the market. Each of these products has specific specifications and features that make their use different from each other. For example, the simple type is not suitable for pouring concrete.
In general, the characteristics of each type of rebar are:
These types of steel rebars are in the form of smooth and uniform bars that do not have any protrusions on them. They are made in sizes from 6 to 50 mm and are used for construction industries. For example, for streets and airports, flat rebars are used to make contraction joints.
The contraction joint is used to prevent cracking and shrinking of concrete. Simple rebars are placed at certain distances between concretes to prevent them from cracking. These products are highly flexible and can be easily cut without being damaged. These products are not suitable for building and building bridges. Because they cannot increase the strength of concrete. Due to the lack of a tread, if pressure is applied to the concrete, it will soon separate from it. Therefore, the concrete structure breaks.
As we said, another type of rebar available in the market has treads. The surface of these products is rough and they are made with a thickness of 6 to 50 mm. Since the surface of these products is treaded, when used for concrete structures, their tread sinks into the concrete. As the concrete dries and hardens, it is not possible to separate the two.
Ribbed bars have two different types, which are:
These products are produced using high heat and have a very high resistance. If you want your concrete structure to have high strength, you should use this type of ribbed rebar for it. Ajda thermomechanical rebars have high flexibility and bending. Therefore, they can be suitable for earthquake-prone areas. They are also recommended for bridge construction. On the other hand, its weldability is also higher than other rebars. Among other characteristics of TMT rebars, we should mention their resistance to high temperature and oxidation.
Another type of ribbed rebar is HSD type, whose tread is complex and spiral. This type of rebar is the most suitable product for concreting, which is produced with a thickness of 4 to 50 mm. The low carbon level in HSD rebars makes them flexible and weldable. Therefore, if you want to go for high bending rebar for concrete structures, we recommend this product.
You can use these products to build industrial, commercial and bridge buildings.
If we are to categorize rebars in terms of strength and resistance, we will come across 6 different types of products. Galvanized rebars, fiberglass lamer, stainless steel, carbon steel, European and epoxy coated are the types of these products. In the following, the features of each of these products are briefly explained.
Categories of Damir Nab products
Among all the tools, metal and non-metal materials that are used for building, Navani is also widely used. This steel tool is used for different parts of the building.
Steel sheet is one of the profiles used in various industries such as automobiles, shipbuilding, etc. Mobarake steel in Isfahan, Aksin steel factory in Ahvaz and Kavian steel in Gilan are steel sheet producers.
The beam is one of the steel profile subgroups that is used in the construction industry. A beam is a heavy profile branch that is used for construction.
A corner is a type of profile that is made in the form of two perpendicular sides. This profile plays a very important role in the construction industry and is used for different parts of the building
Rebar is one of the most widely used metal materials in the construction industry. And it is also called steel reinforced concrete structure, and its use is to strengthen the building against any accident.
Damir Nab’s latest articles
Noavaran Damirnab asr
damirnab With national ID: 14005607311 Carrying out commercial operations, buying and selling, import, export of permitted goods and all types of metal products and all permitted commercial goods, establishing sales representatives of steel manufacturing companies inside and outside the country, participating in public and private tenders and auctions, investing in the steel industry, purchasing and selling shares of other companies, importing and exporting minerals and metals in the form of scrap, ingots, and finished products.
