Reinforcing steel in construction

Reinforcing steel in construction is one of the most important basic elements in the building and construction sector, as it is used to enhance the strength and durability of concrete structures and their tolerance to various loads. 

Engineers rely on steel reinforcement to increase concrete’s resistance to tensile forces, which prevents cracks and ensures the sustainability of buildings for long periods. Different types of rebar are available with multiple specifications to suit the requirements of each project, from residential buildings to bridges and large structures. Therefore, choosing high-quality rebar is essential to ensure the safety and efficiency of construction facilities.

The importance of rebar in construction

When rebar is used in regular concrete, it adds two key advantages to the final product. Reinforced concrete gains the tensile strength provided by steel, in addition to the compressive strength of concrete, which makes it strong and suitable for various types of structures.

All tensile forces in reinforced concrete elements are absorbed by the steel, which is a critical factor in building construction. The high flexibility of steel reinforcement enables it to adapt to concrete, which enhances their cohesion and increases the concrete’s resistance to deformation.

The volumetric changes in both concrete and steel due to temperature changes are similar, which makes them structurally compatible. Thanks to concrete's high resistance to pressure, it is used in elements that bear large loads such as columns.

The use of rebar in construction improves the structure's resistance to harsh weather factors, humidity, and fires, which increases its durability. It also enhances the structure's resistance to tensile, shear, torsion, and bending forces, making it more efficient in bearing.

One of the most important advantages of reinforced concrete is the possibility of forming thin, resistant shells, providing durable and efficient structural solutions. Ultimately, the combination of concrete and steel aims to improve durability and extend the lifespan of the structure, enhancing its long-term efficiency.

Good rebar properties

Reinforcing steel is the essential element of construction, remaining hidden beneath layers of concrete, but it plays a vital role in enhancing the strength, stability and longevity of various structures around the world. 

Whether in towering skyscrapers, giant bridges, or even simple residential homes, rebar provides the support needed to withstand natural forces and the test of time.

• The importance of reinforcement
  • The essence of construction lies in constructing strong and durable structures, and here comes the role of rebar as the main support, giving concrete the strength it needs to resist cracking and instability under heavy loads or external factors. 
  • By incorporating it within concrete, a composite material is formed that is able to withstand high pressures, ensuring the durability and safety of the buildings we rely on daily.
• The role of rebar in construction
  • Construction is the art of transforming engineering visions into tangible reality, where creativity combines with engineering expertise to shape the physical world. However, no matter how impressive the engineering designs are, they will not hold up without the strength provided by rebar. It serves as the backbone of construction, giving structures the ability to bear heavy loads and resist environmental challenges, enhancing their long-term stability.
• Latent power
  • The primary task of rebar is to enhance the durability of concrete and release its full potential. By combining concrete, which has tremendous compressive strength, and rebar, which adds high tensile strength.
  •  An integrated material is created that is able to resist bending, cracking and collapsing. This unique integration between the two materials gives construction projects superior rigidity, allowing them to reach new levels of strength and sustainability, both literally and figuratively.

 The difference between black and galvanized rebar

Reinforcing steel in insulated construction is an essential element in many construction projects, especially in harsh environments or structures that require a long life span. Among its most prominent benefits are:

• Extending the life of structures: Insulated rebar reduces the risk of corrosion, which contributes to enhancing the durability of concrete structures and reducing the need for frequent maintenance.
• Enhancing strength and durability: It gives reinforced concrete a greater ability to withstand heavy loads and harsh environmental conditions, ensuring its stability for long periods.
• Reduced maintenance costs: Thanks to its high resistance to corrosion, it helps reduce maintenance and repair expenses in the long term, making it an economical and efficient choice.
• Reducing environmental impact: It contributes to reducing the replacement of damaged concrete, which reduces waste and enhances sustainability in the construction sector.

The use of rebar in insulated construction ensures improved performance of concrete structures and increases their lifespan, making it an ideal choice in projects that require high durability and sustainability.

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Standards for checking the quality of rebar before use

The selection of reinforcement steel is one of the fundamental factors that affect the quality and sustainability of concrete structures. To ensure strength and durability, the following criteria must be observed:

•  Conforming to standard specifications
  • Reinforcing steel must adhere to local and international specifications, such as the Egyptian Code (ECP), American Standards (ASTM), or British Standards (BS), to ensure that it can withstand different loads.
•  Tensile strength and elongation
  • Reinforcing steel in construction should be selected with high tensile strength to prevent cracks, with an appropriate elongation ratio to absorb dynamic loads such as earthquakes and winds.
•  Rebar type
  • The type varies according to use, as smooth iron (A1) is used in light structures, ribbed (A2 & A3) in projects that are exposed to high stresses, while stainless steel is preferred in wet areas.
•  Suitable diameter and length
  • The diameter is determined according to the structural element, as diameters range between 8 mm and 32 mm. The large diameter is used in columns and beams, and the small diameter is used in slabs.
•  Corrosion and rust resistance
  • Reinforcing steel in construction must be rust-resistant, especially in coastal or humid environments, with galvanized or epoxy-coated steel possibly being used for protection.
• Cost versus quality
  • Quality and price must be balanced, as cheaper iron may be of lower quality, which negatively affects the safety of facilities in the future.
•  Ease of forming and welding
  • Some projects have special requirements, such as forging or welding, so choose iron that is easy to handle to ensure quick and efficient completion.
•  Availability of iron in the market
  • Choosing locally available types ensures continuity of supply and speed of implementation, reducing project delays.
•  Adhesion to concrete
  • It is preferable to use steel reinforcement in ribbed construction to ensure a strong bond with the concrete, which reduces the possibility of separation or slippage.
• Verify quality with tests
  • Before use, tests such as tensile strength, The bendAnd adhesion to concrete to ensure it conforms to the required specifications.

The correct selection of rebar is a critical factor in the success of concrete projects, as it ensures its durability and ability to withstand various conditions over the long term.

Dangers of using poor quality reinforcement

He promises Rebar It is an essential element in the construction of concrete buildings and structures, as it contributes to enhancing the strength and durability of structures. However, the use of poor-quality reinforcement steel may lead to serious risks that affect the safety of the building and its lifespan.

•  Poor resistance to loads
  • Reinforcing steel in low-quality construction does not withstand the required loads, which increases the possibility of concrete cracking or structural collapse under pressure, especially in areas subject to heavy loads or earthquakes.
•  Rapid corrosion and rust
  • Poor steel is often not resistant to corrosion, causing it to corrode quickly when exposed to moisture or harsh environmental factors, which reduces the life of the building and increases maintenance and repair costs.
•  Low cohesion with concrete
  • Poor quality steel may not have the appropriate surface properties for good adhesion to concrete, causing the steel to separate from the concrete and weaken the structural structure.
•  Increased risk of sudden collapse
  • Failure to comply with standard specifications of iron makes it brittle and easy to break, which increases the possibility of sudden collapses in the building, causing huge material and human losses.
•  High cost of maintenance and repair
  • Using poor quality rebar may reduce the initial cost of construction, but result in higher expenses later due to the constant need for maintenance or restoration due to structural damage.

Therefore, it is essential to ensure that the rebar in construction is selected of high quality and conforms to standard specifications to ensure the long-term safety and sustainability of buildings.

 The latest technologies in manufacturing rebar

The steelmaking process at Elkady steel and Ezz Steel Company is characterized by being an integrated process, as electric arc furnaces (EAFs) rely on a balanced mixture of 80% reduced sponge iron and 20% high-quality scrap, which allows precise control of the metallurgical properties of the products, and ensures the production of high-quality final steel.

After the steel is melted in electric arc furnaces, it is transported to crucible furnaces (LF), where the metal undergoes advanced refining processes using techniques that maintain the purity of the steel.

 At this stage, the required alloying elements are added and stirred with inert gases to achieve uniformity of composition and set the optimum temperature for the casting process, ensuring a homogeneous chemical composition with the lowest possible percentage of impurities.

Production of lengths of steel – continuous casting of steel squares (billets)

The molten steel is cast into steel squares (billets) using multiple outlet continuous casting machines at a speed of up to 4.2 meters/min. This process produces steel squares up to 16 meters long and with a square cross-section (130 x 130 mm), ready for rolling to produce rebar or steel wire coils.

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Flat steel production – continuous casting of thin steel slabs

For the production of flat steel, molten steel is cast using continuous casting machines for thin steel slabs equipped with dynamic soft forming technology for incomplete slabs. These modern technologies allow the production of flat steel with precise dimensions up to a thickness of only 1.0 mm.

The latest production technologies in Elkady steel factories 

Elkady steel factories possess the latest technologies for producing hot-rolled flat steel coils, including:

• Compact steel plate production (CSP) technology provided by the German SMS Demag Group.
• Casting and rolling techniques for thin steel slabs from the Italian Danieli group.
• These advanced technologies provide high-precision, high-quality production, strengthening Elkady steel's position as one of the world's leading steel producers.

Companies selling rebar

When searching for companies that sell rebar, it is important to choose companies that provide high-quality products that comply with international standards, to ensure the strength and durability of concrete structures.

 Elkady steel, agent for Ezz Steel and Al-Marakbi, is one of the most prominent companies specialized in selling rebar in construction, offering a variety of products that meet the needs of small and large projects alike.

 Elkady steel is distinguished by providing high-quality rebar with standard specifications, making it a reliable choice for contractors and construction companies. The company is also keen to provide competitive prices and reliable supply services, which contributes to the completion of projects with efficiency and high quality.

Ultimately, rebar is an essential component of reinforced concrete, as it contributes to enhancing the strength and durability of structural structures. In Judge Steele Akbar Rebar dealers In Egypt, and the authorized agent for Ezz Steel, we provide you with the finest types of rebar from major companies such as Ezz and Al-Marakby, to guarantee you the highest quality at the best prices. Contact us via phone numbers +201064085688 to get more details.