Steel Ribbed Rebar HRB400
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Chemical Composition: (Please kindly find our chemistry of our material based on HRB500 as below for your information)
Grade | Technical data of the original chemical composition (%) | ||||||
C | Mn | Si | S | P | V | ||
HRB400 | ≤0.25 | ≤1.60 | ≤0.80 | ≤0.045 | ≤0.045 | 0.04-0.12 | |
Physical capability | |||||||
Yield Strength (N/cm²) | Tensile Strength (N/cm²) | Elongation (%) | |||||
≥400 | ≥570 | ≥14 | |||||
Theoretical weight and section area of each diameter as below for your information:
Diameter(mm) | Section area (mm²) | Mass(kg/m) | Weight of 12m bar(kg) |
6 | 28.27 | 0.222 | 2.664 |
8 | 50.27 | 0.395 | 4.74 |
10 | 78.54 | 0.617 | 7.404 |
12 | 113.1 | 0.888 | 10.656 |
14 | 153.9 | 1.21 | 14.52 |
16 | 201.1 | 1.58 | 18.96 |
18 | 254.5 | 2.00 | 24 |
20 | 314.2 | 2.47 | 29.64 |
22 | 380.1 | 2.98 | 35.76 |
25 | 490.9 | 3.85 | 46.2 |
28 | 615.8 | 4.83 | 57.96 |
32 | 804.2 | 6.31 | 75.72 |
36 | 1018 | 7.99 | 98.88 |
40 | 1257 | 9.87 | 118.44 |
50 | 1964 | 15.42 | 185.04 |
Usage and Applications of HRB400 Deformed Steel Bar:
Deformed bar is widely used in buildings, bridges, roads and other engineering construction. Big to highways, railways, bridges, culverts, tunnels, public facilities such as flood control, dam, small to housing construction, beam, column, wall and the foundation of the plate, deformed bar is an integral structure material. With the development of world economy and the vigorous development of infrastructure construction, real estate, the demand for deformed bar will be larger and larger..
Packaging & Delivery of HRB400 Deformed Steel Bar:
Packaging Detail: products are packed in bundle and then shipped by container or bulk vessel, deformed bar is usually naked strapping delivery, when storing, please pay attention to moisture proof. The performance of rust will produce adverse effect.
- Q:What is the standard diameter of steel rebars?
- The standard diameter of steel rebars typically ranges from 6 millimeters to 50 millimeters, with the most commonly used diameters being 10 millimeters, 12 millimeters, 16 millimeters, and 20 millimeters. The specific diameter of a steel rebar depends on the intended application and structural requirements of the construction project. These rebars are commonly used in reinforced concrete structures to enhance their tensile strength and overall durability.
- Q:What are the advantages of using fiber-reinforced polymer (FRP) rebars over steel rebars?
- There are several advantages of using fiber-reinforced polymer (FRP) rebars over steel rebars. Firstly, FRP rebars are significantly lighter than steel rebars, making them easier to handle and transport. Additionally, FRP rebars have a higher tensile strength than steel rebars, allowing for greater flexibility in design and reducing the need for additional reinforcement. FRP rebars are also non-corrosive, unlike steel rebars which can rust over time, making them more durable and longer-lasting. Lastly, FRP rebars are non-conductive, making them suitable for use in areas with electrical or magnetic fields. Overall, the use of FRP rebars offers numerous advantages in terms of weight, strength, durability, and versatility.
- Q:How do steel rebars affect the overall constructability of a project?
- Steel rebars play a crucial role in enhancing the overall constructability of a project. They provide structural strength and stability to concrete structures, improving their durability and load-bearing capacity. By reinforcing concrete, rebars help prevent cracking, enhance resistance to tension forces, and increase the project's lifespan. Additionally, rebars enable the construction of complex shapes and designs, allowing for more versatile and innovative architectural designs. Overall, steel rebars significantly contribute to the construction process by ensuring the integrity and longevity of the project.
- Q:How are steel rebars protected during concrete pouring?
- Steel rebars are protected during concrete pouring by applying a layer of corrosion-resistant coating or by using epoxy-coated rebars. Additionally, rebars are often placed at a specific depth within the concrete to ensure adequate cover and protection against moisture and corrosive elements.
- Q:Can steel rebars be used in structures with high chemical exposure?
- No, steel rebars should not be used in structures with high chemical exposure because they are prone to corrosion and may deteriorate over time.
- Q:How do steel rebars affect the overall cost of maintenance in a structure?
- Steel rebars can have a significant impact on the overall cost of maintenance in a structure. By providing strength and reinforcement to concrete, steel rebars help prevent cracks, structural failures, and premature deterioration. This reduces the need for costly repairs and prolongs the lifespan of the structure. Additionally, steel rebars can improve the structural integrity of a building, making it more resistant to external factors such as earthquakes or extreme weather conditions. While the initial cost of installing steel rebars may be higher, their long-term benefits in terms of maintenance cost savings make them a worthwhile investment.
- Q:How long do steel rebars typically last?
- Steel rebars typically have a long lifespan and can last for several decades. The exact duration of their lifespan depends on various factors, such as the quality of the rebar, the environmental conditions it is exposed to, and the maintenance practices implemented. Generally, steel rebars are designed to be resistant to corrosion, which is one of the main factors that can affect their longevity. However, over time, rebars may experience some corrosion due to exposure to moisture, chemicals, or other corrosive agents. This can potentially reduce their lifespan. Regular inspections, maintenance, and the application of protective coatings can help extend the lifespan of steel rebars. With proper care, steel rebars can typically last 30 to 50 years or even longer.
- Q:How do steel rebars prevent the concrete from cracking under tension?
- Steel rebars reinforce concrete and increase its structural integrity, preventing cracking under tension. Concrete has low tensile strength and tends to crack when subjected to tensile forces. However, when steel rebars are embedded in the concrete, they absorb and distribute these forces, acting as reinforcement. Typically made of high-strength steel, the rebars have a much higher tensile strength compared to concrete. As a result, when the concrete is under tension, the rebars bear most of the load, preventing cracking. The rebars act as a framework or skeleton within the concrete, resisting the tensile forces and ensuring its structural stability. Furthermore, the bond between the steel rebar and the concrete also plays a role in preventing cracking under tension. The ribbed or deformed surface of the rebars enhances the bond with the surrounding concrete, creating a strong connection. This bond allows the rebars to transfer the tensile forces to the concrete matrix more effectively, reducing the risk of cracking. By reinforcing the concrete, steel rebars help distribute the tensile forces evenly throughout the structure. This prevents localized stress concentrations and minimizes the chances of cracks forming. Additionally, if cracks do occur, the presence of rebars can help control their propagation by acting as barriers that restrict further spread. In conclusion, steel rebars provide reinforcement, increase the strength of concrete, and prevent cracking under tension. They bear the tensile forces, distribute them evenly, and enhance the bond between the rebar and the concrete. This reinforcement ensures the structural integrity of the concrete and helps prevent cracking.
- Q:How do steel rebars prevent corrosion in concrete structures?
- Passivation is a crucial process in preventing corrosion in concrete structures, and steel rebars are the key components responsible for this. By forming a thin oxide layer on their surface, the rebars act as a barrier against corrosion-causing agents. When embedded in concrete, steel rebars benefit from the alkaline environment created by the cement paste, which aids in passivation. The concrete's high pH level prompts the formation of a protective layer of iron oxide, effectively shielding the rebars from moisture and oxygen. Moreover, well-constructed concrete possesses a dense and impermeable nature that restricts the movement of water and other corrosive substances towards the rebars. Consequently, the likelihood of corrosion initiation and progression is significantly reduced. In addition to the alkaline environment and concrete's impermeability, steel rebars are commonly coated with epoxy or zinc, providing an extra layer of protection. These coatings enhance the steel's resistance to corrosion, especially in aggressive environments like marine or chloride-rich conditions. To ensure the long-term prevention of corrosion in concrete structures, regular maintenance and preventive measures are essential. Proper concrete cover over the rebars and the avoidance of excessive moisture or chloride ions are crucial factors in this regard.
- Q:How do steel rebars affect the overall structural stability of a building?
- Steel rebars significantly enhance the overall structural stability of a building. By reinforcing concrete, rebars increase its tensile strength and prevent cracking and failure under heavy loads or external forces. This reinforcement ensures that the building can withstand various stresses, such as earthquakes, wind, and vibrations, improving its durability and safety.
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Steel Ribbed Rebar HRB400
- Ref Price:
-
- Loading Port:
- China Main Port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- -
- Supply Capability:
- -
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