Deformed Bars/ Reinforcing Steel Bars/ Rebar for Construction from China Professional Manufacturer

Deformed Bars/ Reinforcing Steel Bars/ Rebar for Construction from China Professional Manufacturer System 1

Deformed Bars/ Reinforcing Steel Bars/ Rebar for Construction from China Professional Manufacturer

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Loading Port:: Tianjin

Payment Terms:: TT or LC

Min Order Qty:: 30 m.t.

Supply Capability:: 40000 m.t./month

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Product Specifications of Deformed Bars/ Reinforcing Steel Bars/ Rebar for Construction from China Professional Manufacturer

1. reinforcing steel bar
2.diameter:6mm-40mm
3.length:3.5m-12m or as customized
4.certificate:ISO9001:2008,ISO14001:2004

Produt Size and Materials of Deformed Bars/ Reinforcing Steel Bars/ Rebar for Construction from China Professional Manufacturer:

(1)6mm-40mm rebar

(2)12mm-300mm round bar

(3)0.40-1.2mm*1000-1250mm*C electro galvanized steel coil

(4)0.16-1.0mm*900-1250mm*C prepainted galvanized steel coil

(5)0.15-2.0mm*900-1250mm*C hot dipped galvanized steel coil and aluzinc steel coil

(6)0.3-2.0mm*400-1400mm*C cold rolled steel coil

(7)0.80mm-2.0mm mig welding wire

The products exported to Korea, Japan and Southeast Asia, and have a good reputation.

Luli Steel Co., Ltd warmly welcomes all the customers to come to discuss the cooperation and seek common development.

If any questions and need steel information,pls feel free to contact me.

Theorectical Weight Index of Deformed Bars/ Reinforcing Steel Bars/ Rebar for Construction from China Professional Manufacturer:

Diameter (MM)	Inner Diameter (mm)	Rib height (mm)	Cross Sectional Area (MM²)	Theorectical Weight (KG/M)
6	5.8	0.6	28.27	0.222
8	7.7	0.8	50.27	0.395
10	9.6	1.0	78.54	0.617
12	11.5	1.2	113.1	0.888
14	13.4	1.4	153.9	1.21
16	15.4	1.5	201.1	1.58
18	17.3	1.6	254.5	2
20	19.3	1.7	314.2	2.47
22	21.3	1.9	380.1	2.98
25	24.2	2.1	490.9	3.85
28	27.2	2.2	615.8	4.83
32	31.0	2.4	804.2	6.31
36	35.0	2.6	1018	7.99
40	38.7	2.9	1257	9.86

standard and grade of Deformed Bars/ Reinforcing Steel Bars/ Rebar for Construction from China Professional Manufacturer

ASTM	BS	JIS	GB
A615	BS4449	G3112	HRB
Gr40/60/75	Gr460, B500	SD390	335/400/500

Deformed Bars/ Reinforcing Steel Bars/ Rebar for Construction from China Professional Manufacturer

Q:How do steel rebars help in preventing cracks in concrete?: Steel rebars help in preventing cracks in concrete by providing reinforcement and increasing the tensile strength of the structure. When concrete is subjected to tensile forces, it tends to crack. However, the presence of steel rebars within the concrete helps distribute these forces, absorbing the tension and preventing cracks from forming or growing. The rebars act like a skeleton, enhancing the structural integrity and durability of the concrete, ensuring it can withstand various loads and external pressures without significant damage.

Q:How do steel rebars affect the overall crack control of concrete?: The incorporation of steel rebars into concrete structures is crucial for crack control. Steel rebars significantly improve the otherwise low tensile strength of concrete. Tensile forces, such as drying shrinkage, temperature changes, or applied loads, tend to cause cracks in concrete. However, the presence of steel rebars helps mitigate and control these cracks. Rebars reinforce the concrete and provide additional strength. They resist tensile forces and prevent easy cracking of the concrete. When reinforced concrete is subjected to tensile forces, the rebars bear a significant portion of the load, reducing the stress on the concrete and minimizing crack formation. The bond between the steel rebars and the concrete is essential for crack control. This bond ensures effective transfer of tensile forces to the concrete, enhancing its overall crack resistance. Additionally, the bond helps distribute applied loads evenly, reducing the risk of localized cracking. Steel rebars also have the ability to control crack widths in concrete. By specifying the appropriate diameter, spacing, and arrangement of the rebars, engineers can influence crack widths to meet design requirements. The rebars act as barriers, limiting the width of cracks and maintaining the structural integrity of the concrete. In conclusion, steel rebars have a positive impact on crack control in concrete. They enhance the tensile strength, resist tensile forces, distribute loads, and limit crack widths. Incorporating steel rebars in concrete ensures durability and longevity of structures by effectively controlling crack formation and minimizing their negative consequences.

Q:Can steel rebars be used in structures with limited foundation support?: Yes, steel rebars can be used in structures with limited foundation support. Steel rebars are commonly used as reinforcement in concrete structures to enhance their strength and durability. In structures with limited foundation support, the steel rebars can help distribute the load more evenly throughout the structure, minimizing the stress on the foundation. Additionally, the use of steel rebars can also increase the overall stability of the structure. However, it is important to note that the design and placement of the rebars should be done by a qualified engineer to ensure that they are properly integrated into the structure and can effectively bear the load.

Q:How do steel rebars affect the structural capacity of concrete beams and columns?: The role of steel rebars in enhancing the structural capacity of concrete beams and columns cannot be overstated. These rebars serve as reinforcement, providing added strength and durability to the concrete elements. When steel rebars are incorporated into the concrete, the load-bearing capacity of the beams and columns is significantly increased. One of the main functions of steel rebars is to counteract the tensile forces that concrete alone cannot withstand. Concrete is strong under compression but weak under tension, which makes it prone to cracking and failure when subjected to tensile stress. By integrating steel rebars into the concrete, the tensile strength of the reinforced element is greatly improved. The steel rebars act as a framework within the concrete, distributing the load more evenly and reducing the risk of localized failure. When external loads or forces are applied, the rebars bear the tensile stress while the concrete maintains its compressive strength. This combination of materials creates a reinforced concrete element that can handle heavier loads, thus increasing the structural capacity of the beams and columns. Moreover, steel rebars also enhance the ductility and flexibility of the concrete elements. This means that the reinforced beams and columns can undergo greater deformations before reaching failure. The ability to deform without breaking is particularly important in regions prone to earthquakes, as it allows the structure to absorb and dissipate energy, thereby minimizing the risk of collapse. Additionally, steel rebars improve the resistance of concrete beams and columns against shrinkage and thermal stresses. Concrete tends to shrink as it cures and expand and contract due to temperature variations. The presence of steel rebars helps minimize these effects by providing a reinforcing network that restrains the concrete from excessive movements, preventing cracks and preserving the overall structural integrity. In conclusion, steel rebars have a profound impact on the structural capacity of concrete beams and columns. They enhance tensile strength, improve ductility, reduce shrinkage and thermal stresses, and increase overall load-bearing capacity. The combination of concrete and steel reinforcement produces a significantly stronger and more durable structural element that can withstand higher loads, ensuring the stability and safety of the entire structure.

Q:How are steel rebars protected against rust or corrosion?: Corrosion protection is essential for steel rebars to prevent rust and corrosion. Various methods are employed to ensure the durability and longevity of steel rebars in construction projects. Among these methods, the application of protective coatings, such as epoxy, zinc, or polyethylene, is commonly used. Epoxy coatings are frequently chosen because they create a formidable barrier against moisture and oxygen, effectively preventing rust formation. These coatings are typically fused onto the surface of the steel rebar through a process called fusion bonding, where the epoxy coating is melted and adheres to the steel. In contrast, zinc coatings are applied through galvanizing or metallizing. Galvanizing involves immersing the steel rebar in molten zinc, which forms a protective layer. Metallizing, on the other hand, entails spraying molten zinc onto the steel surface. Both methods produce a sacrificial zinc layer that shields the steel rebar from corrosion. Polyethylene coatings are also effective in corrosion protection. They are applied using a heat shrink process, where a polyethylene sleeve is wrapped tightly around the steel rebar and heated. This creates a robust and impervious layer that resists moisture and chemicals, guaranteeing long-term protection against rust and corrosion. Additionally, stainless steel rebars can be utilized to prevent corrosion. Stainless steel possesses innate corrosion-resistant properties due to the presence of chromium. The chromium forms a passive oxide layer on the surface, acting as a protective barrier against rust and corrosion. Therefore, stainless steel rebars are highly durable and long-lasting. In conclusion, safeguarding steel rebars against rust and corrosion is vital to ensure the structural integrity and longevity of construction projects. By applying protective coatings such as epoxy, zinc, or polyethylene, or by utilizing stainless steel rebars, the risk of corrosion is significantly minimized. This enables the steel rebars to endure harsh environmental conditions and remain intact for many years.

Q:How do steel rebars improve the ductility of concrete?: Concrete's ductility is enhanced by steel rebars in several ways. Firstly, the distribution and dissipation of stress throughout the concrete structure is facilitated by the presence of rebars. This prevents the concentration of loads in specific areas, thus preventing cracks or fractures and improving overall ductility. Secondly, when concrete undergoes tension or bending forces, rebars act as reinforcement to resist these forces. The tensile strength of steel rebars is higher compared to concrete, which is weak in tension. This reinforcement allows concrete to withstand higher tensile stresses without breaking, thereby increasing ductility. Furthermore, the bond between steel rebars and the concrete matrix plays a crucial role in improving ductility. The rough surface of rebars provides better adhesion with the surrounding concrete, increasing stress transfer between the two materials. This bond ensures that rebars do not slip out of the concrete during deformation, maintaining structural integrity and enhancing the ductility of the composite material. Additionally, the presence of steel rebars contributes to the post-cracking behavior of concrete. When cracks develop under high loads, rebars help hold the concrete together and prevent further crack propagation. This post-cracking behavior enables concrete to maintain its load-bearing capacity even in a damaged state, thereby improving overall ductility. In conclusion, steel rebars improve concrete's ductility by distributing stress, resisting tension and bending forces, enhancing the bond between concrete and rebars, and providing post-cracking reinforcement. These combined effects result in a more flexible and durable concrete structure capable of withstanding deformation without catastrophic failure.

Q:What is the average diameter of steel rebars used in construction?: The average diameter of steel rebars used in construction typically ranges from 6 to 32 millimeters.

Q:How do steel rebars prevent concrete structures from cracking under load?: Steel rebars prevent concrete structures from cracking under load by providing reinforcement and increasing the tensile strength of the concrete. When the concrete is subjected to tensile forces, such as those caused by the weight or movement of the structure, it is prone to cracking. However, the inclusion of steel rebars within the concrete helps to distribute these tensile forces throughout the structure, making it more resistant to cracking. The steel rebars act as a framework, absorbing and dispersing the tension, thereby enhancing the overall structural integrity and preventing cracks from forming.

Q:What are the guidelines for the proper curing of concrete with steel rebars?: The guidelines for the proper curing of concrete with steel rebars are as follows: 1. Moisture: Concrete needs to be kept moist during the curing process to ensure proper hydration and strength development. However, when curing concrete with steel rebars, it is important to prevent excessive moisture as it can cause corrosion and damage the steel. Therefore, a balance should be maintained in providing enough moisture without allowing standing water to accumulate around the rebars. 2. Covering: The steel rebars should be adequately covered with concrete during the pouring process to provide protection against corrosion. The cover thickness should be in accordance with the design specifications to ensure sufficient strength and durability. 3. Curing time: The curing time for concrete with steel rebars is typically longer than that of plain concrete. This is because the steel needs to bond with the concrete and achieve proper adhesion. The recommended curing period can vary depending on factors such as ambient temperature, humidity, and the specific type of steel used. It is important to refer to the project specifications or consult with a structural engineer to determine the appropriate curing time for the specific application. 4. Temperature control: During the curing process, temperature control is crucial to ensure uniform hydration and avoid thermal stress. Rapid temperature changes can cause cracking and compromise the integrity of the concrete. It is important to protect the concrete from extreme temperature variations and provide insulation or shading as necessary. 5. Protection from external elements: Concrete with steel rebars needs to be protected from external elements that may cause damage or corrosion. This includes protecting the concrete from exposure to chloride ions, carbonation, and chemicals. Appropriate surface coatings or sealants can be applied to provide an additional layer of protection. 6. Inspection and maintenance: Regular inspection and maintenance are essential to ensure the long-term durability of concrete with steel rebars. It is important to monitor for any signs of corrosion, cracking, or deterioration and take appropriate measures to address them promptly. This may include repairing damaged areas, applying protective coatings, or implementing corrosion prevention measures. Following these guidelines will help ensure the proper curing of concrete with steel rebars, resulting in a structurally sound and durable construction material that can withstand the test of time.

Q:How do steel rebars affect the overall sound insulation of a building?: Steel rebars do not have a direct impact on the overall sound insulation of a building. The primary purpose of steel rebars in construction is to reinforce concrete structures and provide strength and stability. Sound insulation is primarily influenced by the materials and design of the walls, floors, and ceilings, as well as proper installation of acoustic barriers and insulation materials. While steel rebars can transmit sound to some extent due to their density, their impact on sound insulation is generally negligible compared to other factors. Sound insulation in buildings is achieved by using materials with high sound absorption properties, such as acoustic insulation panels, mineral wool, or soundproofing barriers.

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