Reinforcing Steel Bar for Concrete System 1

Reinforcing Steel Bar for Concrete

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Product Description:

OKorder is offering Reinforcing Steel Bar for Concrete at great prices with worldwide shipping. Our supplier is a world-class manufacturer of steel, with our products utilized the world over. OKorder annually supplies products to African, South American and Asian markets. We provide quotations within 24 hours of receiving an inquiry and guarantee competitive prices.

Product Applications:

Reinforcing Steel Bar for Concrete are ideal for structural applications and are widely used in the construction of buildings and bridges, and the manufacturing, petrochemical, and transportation industries.

Product Advantages:

OKorder's Reinforcing Steel Bar for Concrete are durable, strong, and wide variety of sizes.

Main Product Features:

· Premium quality

· Prompt delivery & seaworthy packing (30 days after receiving deposit)

· Can be recycled and reused

· Mill test certification

· Professional Service

· Competitive pricing

Product Specifications:

Manufacture: Hot rolled

Grade: HRB335

Size: 6mm-25mm

Certificates: ISO, SGS, BV, CIQ

Length: 6m – 12m, as per customer request

Packaging: Export packing, nude packing, bundled

DEFORMED BAR
SIZE d(mm)	theoretical kg/m
6	0.222
8	0.395
10	0.617
12	0.888
14	1.21
16	1.58
18	2
20	2.47
22	2.98
25	3.85
28	4.83
32	6.31

Grade	Technical data of the original chemical composition (%)
	C	Mn	Si	S	P	B
HRB335	≤0.25	≤1.60	≤0.80	≤0.045	≤0.045	>0.0008
	Physics capability
	Yield Strength(N/cm2)		Tensile Strength(N/cm2)		Elongation (%)
	≥335		≥490		≥16

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
	Physics capability
	Yield Strength(N/cm2)		Tensile Strength(N/cm2)		Elongation (%)
	≥400		≥570		≥14

FAQ:

Q1: Why buy Materials & Equipment from OKorder.com?

A1: All products offered byOKorder.com are carefully selected from China's most reliable manufacturing enterprises. Through its ISO certifications, OKorder.com adheres to the highest standards and a commitment to supply chain safety and customer satisfaction.

Q2: How do we guarantee the quality of our products?

A2: We have established an advanced quality management system which conducts strict quality tests at every step, from raw materials to the final product. At the same time, we provide extensive follow-up service assurances as required.

Q3: How soon can we receive the product after purchase?

A3: Within three days of placing an order, we will arrange production. The normal sizes with the normal grade can be produced within one month. The specific shipping date is dependent upon international and government factors, the delivery to international main port about 45-60days.

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Reinforcing Steel Bar for Concrete

Q: How do steel rebars resist corrosion?: Steel rebars resist corrosion through a process called passivation. When the steel is exposed to air and moisture, a thin layer of iron oxide forms on its surface, which acts as a protective barrier against further corrosion. This layer, also known as rust, prevents oxygen and moisture from reaching the inner layers of steel, thereby preventing further oxidation. Additionally, steel rebars are often coated with materials such as epoxy or zinc to provide an extra layer of protection against corrosion. These coatings act as a physical barrier between the steel and the environment, preventing contact with corrosive elements. Regular maintenance, such as cleaning and applying protective coatings, can also help to extend the lifespan of steel rebars and prevent corrosion.

Q: Can steel rebars be used in foundation structures?: Yes, steel rebars can be used in foundation structures. In fact, they are commonly used in reinforced concrete foundations to increase the strength and durability of the structure. Steel rebars provide reinforcement to the concrete by enhancing its tensile strength, which is particularly important in areas where the foundation might be subjected to heavy loads or seismic activity. The rebars are typically placed in a grid pattern within the concrete to distribute the load and prevent cracking or failure. Overall, steel rebars are an essential component in foundation structures to ensure their stability and longevity.

Q: How do steel rebars affect the thermal properties of concrete?: Steel rebars can have both positive and negative effects on the thermal properties of concrete. On one hand, the presence of steel rebars can increase the overall thermal conductivity of the concrete. This means that heat can be transferred more easily through the concrete, allowing for a more efficient heat transfer and distribution within the structure. This can be beneficial in applications where thermal conductivity is desired, such as in buildings with radiant heating systems. On the other hand, the thermal expansion and contraction characteristics of steel and concrete are different. This difference in thermal expansion coefficients can lead to the development of thermal stresses and potential cracking within the concrete, especially during temperature variations. These cracks can compromise the structural integrity of the concrete and may require additional reinforcement measures to mitigate the effects. Overall, the presence of steel rebars can impact the thermal properties of concrete by increasing its thermal conductivity and potentially leading to the development of thermal stresses and cracks. It is important to consider these factors during the design and construction process to ensure the desired performance and longevity of the concrete structure.

Q: What is the maximum spacing allowed between steel rebars in a concrete structure?: The maximum spacing allowed between steel rebars in a concrete structure depends on various factors such as the size and type of the rebar, the design requirements, and the intended use of the structure. Generally, it is recommended to follow the guidelines provided by structural engineers and building codes, which typically specify a maximum spacing to ensure structural integrity and adequate reinforcement.

Q: What is the role of steel rebars in the construction of multi-level car parks?: Steel rebars play a crucial role in the construction of multi-level car parks as they provide strength, durability, and stability to the structure. They are used to reinforce the concrete, enhancing its load-bearing capacity and preventing it from cracking or collapsing under the weight of vehicles. Steel rebars also help to distribute the load evenly, ensuring the structural integrity of the car park.

Q: Are there any standards for the spacing of steel rebars in concrete?: Yes, there are standards for the spacing of steel rebars in concrete. The purpose of these standards is to ensure structural integrity and durability of the reinforced concrete. The specific spacing requirements may vary depending on factors such as the type of structure, load conditions, and local building codes. In the United States, the American Concrete Institute (ACI) provides guidelines for rebar spacing in their publication ACI 318, "Building Code Requirements for Structural Concrete." According to ACI 318, the minimum spacing between parallel reinforcing bars should not be less than the maximum bar size or 1.5 times the diameter of the largest coarse aggregate used in the concrete, whichever is larger. For example, if the maximum bar size is 12mm and the largest coarse aggregate size is 20mm, the minimum spacing between the rebars should be 30mm (1.5 times the largest aggregate size). This ensures that there is adequate concrete cover around each rebar to protect it from corrosion and to provide sufficient bond strength. In addition to the minimum spacing, ACI 318 also provides guidelines for the maximum spacing of rebars. These guidelines consider factors such as the size and shape of the concrete member, the type of loading it will experience, and the required strength. The maximum spacing is typically determined to prevent excessive cracking and ensure proper distribution of loads throughout the structure. It is important to note that local building codes and regulations may have additional requirements or variations from the ACI standards. Therefore, it is always advisable to consult the relevant building codes or work with a qualified structural engineer to ensure compliance with the specific spacing requirements for steel rebars in concrete in your area.

Q: Can steel rebars be used in offshore oil rig construction?: Yes, steel rebars can be used in offshore oil rig construction. Steel rebars are commonly used in the construction industry, including for offshore structures such as oil rigs. These rebars provide reinforcement to concrete structures, ensuring structural integrity and strength. In the offshore oil rig construction, steel rebars are typically embedded in concrete foundations, columns, and other structural elements to enhance their resistance to various forces such as wind, waves, and seismic activity. The use of steel rebars helps to ensure the durability and safety of offshore oil rigs, making them suitable for the demanding conditions of offshore environments.

Q: What are the different methods for attaching steel rebars to existing structures?: There are several methods for attaching steel rebars to existing structures, including drilling and epoxy anchoring, mechanical anchoring using couplers, welding, and using adhesive or resin-based systems. Each method has its own advantages and considerations depending on the specific requirements and conditions of the structure.

Q: Can steel rebars be used for both residential and commercial construction?: Yes, steel rebars can be used for both residential and commercial construction. Steel rebars are commonly used to reinforce concrete structures, such as foundations, walls, and beams, in a wide range of construction projects, including both residential and commercial buildings. The use of steel rebars provides strength and durability to the concrete, ensuring the integrity of the structure in both types of construction.

Q: How do steel rebars affect the structural integrity of a building?: Steel rebars play a crucial role in enhancing the structural integrity of a building. These reinforced steel bars are primarily used in concrete structures to provide strength and stability. By reinforcing the concrete, rebars help to resist tensile forces and prevent the formation of cracks in the building. One of the main ways rebars affect structural integrity is by increasing the overall load-bearing capacity of the structure. When concrete is combined with steel rebars, it creates a composite material that can withstand greater amounts of weight and stress. This is particularly important in high-rise buildings or structures that need to support heavy loads, such as bridges or parking garages. Moreover, rebars help mitigate the effects of shrinkage and temperature changes on the concrete. Concrete has a tendency to shrink and expand due to changes in temperature and humidity. This can cause cracks to form and compromise the structural integrity of the building. However, by embedding rebars within the concrete, these forces are counteracted, preventing significant damage. Another critical aspect of rebars is their ability to resist bending and deformation. In the event of an earthquake or other dynamic forces, the rebars help distribute the energy throughout the structure, reducing the risk of collapse. This resilience is vital in regions prone to seismic activity. Furthermore, steel rebars offer exceptional durability and longevity. Unlike other materials, such as wood or plastic, steel does not rot, decay, or get affected by termites or other pests. This ensures that the structural integrity of the building remains intact over time, reducing the need for frequent repairs or replacements. In conclusion, steel rebars significantly enhance the structural integrity of a building. By reinforcing concrete, rebars provide strength, increase load-bearing capacity, resist shrinkage and temperature changes, mitigate the effects of dynamic forces, and provide long-lasting durability. Without the inclusion of rebars, buildings would be more susceptible to cracking, structural failure, and compromised safety.

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