Ribbed Reinforcing Deformed Steel Bar-BS4449:1997

Ribbed Reinforcing Deformed Steel Bar-BS4449:1997 System 1

Ribbed Reinforcing Deformed Steel Bar-BS4449:1997

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 28 m.t.

Supply Capability:: 30000 m.t./month

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Specifications

Ribbed Reinforcing Deformed Steel Bar-BS4449:1997
Size: from 8 to 32mm
Grade: HRB400, BIS460B, ASTMGR60,BS4449

Ribbed Reinforcing Deformed Steel Bar-BS4449:1997

Grade: HRB335 HRB400 HRB500 HPB235 ASTM A615 Gr.40 Gr.60 Gr.75 BS449B 460B 500B

SD345 SD390 SD490 SD235 SD295

Standard: ASTM JIS GB DIN

Diameter: 8mm-32mm

Length: 6m 9m 12m

Application: construction material, building material

Port of Loading: Tianjin

Delivery Time: 25 days after confirmng your order

Packing: in bundles

Ribbed Reinforcing Deformed Steel Bar-BS4449:1997

D	THEORETICAL WEIGHT	D	THEORETICAL WEIGHT	D	THEORETICAL WEIGHT
/mm	(kg/m)	/mm	(kg/m)	/mm	(kg/m)
8	0.395	18	2	32	6.31
10	0.617	20	2.47	36	7.99
12	0.888	22	2.98	40	9.87
14	1.21	25	3.85	50	15.42
16	1.58	28	4.83

Ribbed Reinforcing Deformed Steel Bar-BS4449:1997

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	>0.00008
	Physics capability
	Yield Strength(N/cm2)		Tensile Strength(N/cm2)		Elongation (%)
	≥335		≥490		≥16

Ribbed Reinforcing Deformed Steel Bar-BS4449:1997

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	>0.00008
	Physics capability
	Yield Strength(N/cm2)		Tensile Strength(N/cm2)		Elongation (%)
	≥400		≥570		≥14

Ribbed Reinforcing Deformed Steel Bar-BS4449:1997

Grade: HRB335 HRB400 HRB500 HPB235 ASTM A615 Gr.40 Gr.60 Gr.75 BS449B 460B 500B

SD345 SD390 SD490 SD235 SD295

Standard: ASTM JIS GB DIN

Diameter: 8mm-32mm

Length: 6m 9m 12m

Application: construction material, building material

Port of Loading: Tianjin

Delivery Time: 25 days after confirmng your order

Packing: in bundles

Ribbed Reinforcing Deformed Steel Bar-BS4449:1997

Ribbed Reinforcing Deformed Steel Bar-BS4449:1997

Q:What are the guidelines for ensuring proper concrete cover over steel rebars?: To ensure the long-term durability and performance of reinforced concrete structures, it is crucial to have the appropriate concrete cover over steel rebars. Here are some tips to achieve the correct cover: 1. Compliance with building codes and specifications is essential. These regulations establish minimum requirements for concrete cover over steel rebars to ensure structural integrity, fire resistance, and corrosion resistance. It is important to consult and adhere to the applicable codes and specifications for your project. 2. Determine the required concrete cover based on factors such as environmental conditions, exposure to aggressive agents, structural design, and reinforcement type. Structural engineers typically assess these factors to determine the necessary cover and protect the rebars adequately. 3. Carefully select the concrete mix design to achieve the desired strength, durability, and workability. Consider factors like the quality and size of aggregates, cement content, water-to-cement ratio, and use of additives or admixtures. A well-designed mix will promote proper bonding and sufficient protection of the rebars. 4. Maintain proper construction practices. This includes using appropriate formwork and reinforcement placement techniques, ensuring correct concrete placement, compaction, and curing. Proper positioning and secure tying of the rebars are crucial to maintain the required cover and prevent displacement during concrete pouring. 5. Regular inspections and monitoring during construction are necessary. Check the placement of reinforcement, cover thickness, and overall concrete quality. Address and rectify any deviations from the specified requirements promptly. 6. Protect against corrosion. Adequate concrete cover helps prevent corrosion, but additional measures can enhance durability. Consider using corrosion-resistant rebars, applying epoxy coatings, or utilizing corrosion inhibitors to further protect the reinforced concrete structure. 7. Document and maintain records of the construction process, including reinforcement placement, cover thickness, and any modifications made. This documentation will be useful for future reference, maintenance, and repairs. By following these guidelines, you can ensure the appropriate concrete cover over steel rebars, resulting in durable and structurally sound reinforced concrete structures. It is always advisable to consult with structural engineers and construction professionals to meet specific project requirements and comply with local building codes and regulations.

Q:How are steel rebars protected against damage from seismic events?: Steel rebars are protected against damage from seismic events by using various techniques. One common method is to design and construct buildings with reinforced concrete structures that incorporate adequate steel reinforcement. This reinforcement provides additional strength and flexibility to withstand the forces generated during an earthquake. Additionally, engineers may employ measures such as seismic bracing, base isolation systems, or dampers to absorb and dissipate seismic energy, further protecting the steel rebars and the overall structure from damage.

Q:What are the different types of steel rebars used in beams and columns?: There are primarily two types of steel rebars used in beams and columns: mild steel rebars and high-strength rebars. Mild steel rebars are commonly used in general construction projects and have a lower yield strength. On the other hand, high-strength rebars, also known as deformed rebars, have a higher yield strength and are typically used in structures that require greater load-bearing capacity.

Q:Are steel rebars suitable for use in structures with high resistance to impact?: Steel rebars are generally suitable for use in structures with high resistance to impact. Rebars, also known as reinforcement bars, are made from steel and are commonly used in concrete structures to enhance their strength and durability. Steel is known for its high tensile strength and ability to absorb and distribute impact forces, making it an ideal material for reinforcement. In structures that are prone to impact, such as bridges, highways, or buildings located in earthquake-prone areas, steel rebars play a critical role in providing additional strength and resistance. The use of rebars ensures that the structure can withstand sudden impact loads and prevent catastrophic failures. Moreover, steel rebars are available in various grades and sizes, allowing engineers to select the appropriate type of rebar based on the specific requirements of the structure. Higher grade rebars, such as Grade 60 or Grade 75, offer increased strength and ductility, making them even more suitable for structures with high resistance to impact. It is important to note that while steel rebars enhance the overall strength and impact resistance of a structure, other factors such as design, construction techniques, and maintenance also play vital roles in ensuring the structure's ability to withstand impact forces. Therefore, a comprehensive approach that considers all these factors is essential in designing and constructing structures with high resistance to impact.

Q:What are the advantages of using deformed steel rebars?: There are several advantages of using deformed steel rebars in construction. Firstly, the deformations on the surface of the rebars create a strong bond with the surrounding concrete, enhancing the overall structural integrity of the reinforced concrete. Secondly, the rough surface of the rebars provides increased resistance against slipping, preventing potential failures due to movement or seismic activities. Additionally, deformed rebars offer improved load-bearing capacity, enabling them to withstand higher loads and stresses compared to plain steel rebars. Lastly, the increased ductility of deformed rebars allows for better absorption of energy during earthquakes or other dynamic forces, making them a reliable choice for seismic zones.

Q:What are the factors that affect the durability of steel rebars in concrete?: There are several factors that can affect the durability of steel rebars in concrete. These include the quality and composition of the concrete itself, the presence of moisture and chemicals, exposure to environmental conditions such as temperature and humidity, and the level of corrosion protection provided to the rebars. Additionally, factors such as proper construction practices, maintenance, and regular inspections also play a significant role in ensuring the durability of steel rebars in concrete structures.

Q:Can steel rebars be used in the construction of underground tunnels?: Yes, steel rebars can be used in the construction of underground tunnels. Steel rebars are commonly used as reinforcement in concrete structures, including tunnels, to provide added strength and durability. They help to prevent cracking and increase the overall structural integrity of the tunnel.

Q:Can steel rebars be used in structures with high resistance to moisture?: Yes, steel rebars can be used in structures with high resistance to moisture. Steel rebars are commonly used in reinforced concrete structures, including those that are exposed to moisture such as bridges, marine structures, and underground structures. However, it is important to use properly coated or corrosion-resistant steel rebars, and ensure proper concrete cover and waterproofing measures are implemented to protect against the potential corrosion caused by moisture.

Q:What are the factors considered in designing with steel rebars?: Some of the factors considered in designing with steel rebars include the structural requirements of the project, including the load that the rebars will need to support and the overall design and layout of the structure. Other factors include the type and grade of steel being used, the corrosion resistance properties, the spacing and arrangement of the rebars, and the connection details between the rebars and other structural elements. Additionally, factors such as construction techniques, budgetary constraints, and local building codes and regulations also influence the design considerations for steel rebars.

Q:How are steel rebars used in retaining walls?: Steel rebars are used in retaining walls to provide additional strength and reinforcement. These rebars, which are typically placed horizontally and vertically within the wall, help to counteract the lateral forces and prevent the wall from collapsing or shifting. They enhance the structural integrity of the retaining wall, allowing it to withstand the pressure exerted by the soil or other materials being retained.

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