Steel Rebar Strips For Building Construction
- Ref Price:
-
- Loading Port:
- China main port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 100 m.t.
- Supply Capability:
- 100000 m.t./month
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Usage and Applications
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.
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 |
Packaging & Delivery
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.
Each bundle weight: 2-3MT, or as required
Payment term: TT or L/C
Delivery Detail: within 45 days after received advanced payment or LC.
Label: to be specified by customer, generally, each bundle has 1-2 labels
Trade terms: FOB, CFR, CIF
Cold Rolled Techniques
Yield Point: 545-565mpa
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.
- Q: How do steel rebars resist alkali-silica reaction in concrete?
- The primary reason why steel rebars can withstand the alkali-silica reaction in concrete is because of the passive film that forms on their surface and the alkaline environment of the concrete. When steel rebars are embedded in concrete, they develop a passive film on their surface. This film serves as a protective layer that prevents direct contact between the steel and the aggressive alkali-silica reactive aggregates that are present in the concrete. The formation of this passive film is a result of the high pH of the alkaline environment created by the cement in the concrete, which usually has a pH level of 12-13. This high pH aids in the creation of an oxide layer on the surface of the steel rebar, effectively shielding it from the reactive elements in the aggregates. Moreover, the alkaline environment of the concrete plays a crucial role in maintaining the passivity of the steel rebars. The alkalinity of the concrete enables the passive film to remain stable and intact, providing a continuous barrier against the alkali-silica reaction. As long as the pH of the concrete remains high, the steel rebars will continue to resist the reaction. It is important to note that the thickness and quality of the passive film on the steel rebars are vital in guaranteeing their resistance to the alkali-silica reaction. Any factors that can compromise the integrity of this film, such as carbonation or chloride contamination, can increase the risk of the reaction occurring. In conclusion, the resistance of steel rebars to the alkali-silica reaction in concrete is primarily due to the presence of a passive film on their surface, which is formed by the alkaline environment of the concrete. This film functions as a protective barrier, preventing direct contact between the steel and the reactive aggregates and minimizing the likelihood of the reaction occurring.
- Q: Are there any environmental concerns associated with steel rebars?
- Steel rebars have various environmental concerns associated with them. One of the main worries is the production process, which involves extracting and processing iron ore. This process is energy-intensive and can contribute to greenhouse gas emissions and air pollution. Moreover, mining for iron ore can cause habitat destruction and displace wildlife. Another environmental concern is the potential corrosion of steel rebars over time, especially in marine and coastal environments. Corrosion can result in structural degradation, leading to the need for replacement and increased resource and energy consumption. Furthermore, the disposal of steel rebars at the end of their lifespan can also create environmental challenges. If not managed properly, steel rebars may end up in landfills, occupying valuable space and potentially releasing harmful substances into the environment. Nevertheless, it is important to highlight that steel rebars are often recycled, which helps alleviate some of these environmental concerns. Recycling steel rebars reduces the demand for new production, conserves natural resources, and decreases energy consumption and greenhouse gas emissions. Additionally, the use of recycled steel rebars helps prevent the disposal of these materials in landfills. In conclusion, while steel rebars have environmental concerns, proper management and recycling practices can minimize their impact on the environment.
- Q: How do steel rebars affect the ductility of reinforced concrete?
- Steel rebars greatly enhance the ductility of reinforced concrete by providing a strong and flexible reinforcement. The rebars absorb and distribute tensile forces, preventing cracks from forming and enhancing the overall strength and durability of the concrete structure.
- Q: What is the recommended diameter of steel rebars for slab reinforcement?
- The recommended diameter of steel rebars for slab reinforcement typically ranges from 8mm to 32mm, depending on the specific design requirements and load conditions of the slab.
- Q: Are steel rebars resistant to corrosion?
- Yes, steel rebars are resistant to corrosion.
- Q: What is the difference between deformed and plain steel rebars?
- Deformed steel rebars have ribs, lugs, or projections on their surface, which provide better bonding with concrete and enhance their overall strength and durability. On the other hand, plain steel rebars have a smooth surface without any additional features.
- Q: What is the fatigue strength of steel rebars?
- The maximum stress level that steel rebars can endure without failing or developing cracks is known as their fatigue strength. This strength can vary depending on factors like the steel grade, manufacturing process, surface condition, and the specific design and loading conditions. Compared to other construction materials, steel rebars generally have high fatigue strength. The fatigue behavior of steel rebars is influenced by their mechanical properties, including yield strength, tensile strength, and ductility. Rebars with higher strength tend to have higher fatigue strength. To determine the fatigue strength of steel rebars, they are subjected to cyclic loading at specific stress amplitudes and frequencies in fatigue testing. The number of cycles required for failure or crack initiation is recorded, and the fatigue strength is determined based on the stress level at a specific number of cycles. Considering the fatigue strength of steel rebars is crucial in structural design, particularly in applications with cyclic loading or dynamic forces, such as bridges, buildings, and offshore structures. Engineers and designers must carefully analyze the loading conditions and choose rebars with appropriate fatigue strength to ensure the integrity and durability of the construction.
- Q: How do steel rebars affect the durability of concrete structures?
- Steel rebars play a crucial role in enhancing the durability of concrete structures. By reinforcing the concrete, rebars help to increase its tensile strength, which is otherwise low compared to its compressive strength. This is crucial because concrete is highly effective in resisting compressive forces, but it is weak in withstanding tension or bending forces. When concrete structures are subjected to external forces like vibrations, wind, or earthquakes, the rebars absorb the tension and bending forces, preventing the concrete from cracking or collapsing. This ensures that the structure remains intact and stable. Without the presence of steel rebars, concrete structures would be more prone to damage and failure under such circumstances. Additionally, steel rebars also enhance the durability of concrete structures by preventing corrosion. When embedded in concrete, rebars act as a protective barrier against moisture and oxygen, which are primary agents that lead to the corrosion of steel. By preventing the penetration of these harmful elements, rebars significantly extend the lifespan of the concrete structure. Moreover, steel rebars provide dimensional stability to concrete structures. As concrete tends to shrink and expand due to temperature changes and moisture variations, the presence of rebars helps to counteract these movements. This prevents cracks from forming and ensures the structural integrity of the concrete. In summary, steel rebars greatly enhance the durability of concrete structures by increasing their tensile strength, preventing cracking and collapse, protecting against corrosion, and providing dimensional stability. Their presence is essential for constructing long-lasting and reliable concrete structures that can withstand various external forces and environmental conditions.
- Q: How do steel rebars improve the strength of concrete?
- Steel rebars improve the strength of concrete by providing reinforcement and enhancing its structural integrity. The rebars act as a skeleton, distributing and transferring the load across the concrete structure. This prevents cracks and increases the overall tensile strength of the concrete, making it more resistant to bending, shearing, and other external forces.
- Q: How do steel rebars affect the cost of a construction project?
- Steel rebars can significantly affect the cost of a construction project because they are a crucial component in reinforced concrete structures. The cost of steel rebars depends on their quantity, grade, and size, and it can greatly impact the overall project budget. Additionally, the transportation and installation costs associated with steel rebars should also be taken into account. Therefore, careful planning and consideration of the type and amount of steel rebars required are essential to manage and optimize the project's cost.
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Steel Rebar Strips For Building Construction
- Ref Price:
-
- Loading Port:
- China main port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 100 m.t.
- Supply Capability:
- 100000 m.t./month
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
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