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1. Types of reinforcement
Steel reinforcing bars, often known as rebar, must bond well with concrete so that they function as one entity. In order to ensure that this bond is as strong as possible, various forms of reinforcement exist. The most commonly used are mild steel bars (with a smooth surface), deformed steel bars (with a ribbed surface), mesh sheets, and prestressed concrete steel strand (PC strand).
2. Mild steel bars
Round in shape and with a smooth surface, these rods or dowels are commonly used in expansion joints within poured concrete elements and for contraction joints in roads and pavements. They are made of mild steel and are available in numerous different sizes from 5 to 40 mm. Different sizes can be welded together to obtain the shape that is needed.
3. Deformed steel bars
These are rods with protruding ribs on their surface and are also common when it comes to reinforcement. Many types of materials are used in their creation, most commonly carbon steel. The threads are made using a special calibrated roller. These deformations increase the contact with the poured concrete and means better bonding is achieved than with mild steel bars. The concrete thus becomes significantly harder.
4. Reinforcing mesh sheets
Reinforcing mesh sheets are made of cold-rolled steel bars that are placed at right angles to each other and welded together. The cold-rolling production process improves the quality of the steel. Installing these mesh sheets is simple and they are mainly used to reinforce concrete slabs. Since the mesh is completely fused with the concrete, it cannot be deformed in any way.
5. PC strand
Pre-stressed concrete steel strand is used to strengthen structures that will be exposed to bending, warping, and tensile forces. It is a twisted steel cable composed of 2 or more high strength steel wires.
6. Reinforcing materials have their weak points
The main downside of reinforcing materials is corrosion, which can significantly shorten their lifespan. For this reason, there must be no trace of rust during installation.
7. Reinforcing mesh sheet - prices
How much does reinforcement cost? A reinforcing mesh sheet, measuring 2.4x4.8m, with 5mm thickness, costs approximately NGN30000.
8. Rebar - prices
How much do reinforcement bars cost? The price of 12mm diameter rebar, NGN4500..
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Expert advice on reinforcement bars & Metalwork by Fabrication & Furniture Concepts 1. What kind of projects require welding services? All kind of metal requires welding , However, in relation to construction, welding is essential in construction projects for the fabrication and installation of structural steel components, such as beams, columns, and trusses. It is also used in the assembly of metal frameworks, staircases, fences, and gates.There are other sectors that requires welding services and these includes: Manufacturing, infrastructure, oil and gas, farbrication and metal working, automotive & transportation, etc. 2. How do reinforcement bars prevent concrete from cracking? When the reinforcement bars are well arrange to specification the bound between the irons help to reduce any crack. Its important to note that proper design and installation of reinforcement bars, including adequate spacing, anchorage, and cover requirements, are crucial to ensuring their effectiveness in preventing concrete cracking. Engineering standards and guidelines should be followed to achieve the desired structural performance and durability. 3. What types of iron are commonly used in door and gate construction? You can use different type depend of the clients choice, you can either make it a see through or palisade door. However, in door and gate construction, various types of irons and steels are commonly used due to their strength, durability, and versatility. Here are some of the commonly used types of iron and steel: - Wrought iron The specific type of iron or steel chosen for a door or gate construction project depends on factors such as design requirements, desired strength, durability, corrosion resistance, and budget considerations. 4. How do I maintain iron doors and gates? Once you use the right materials you carry out regular painting to reduce corrosion . However, remember to refer to the manufacturers guidelines or consult with a specialist if your iron doors and gates have specific care instructions or are made from unique materials. Following proper maintenance practices will help extend the lifespan of your iron doors and gates and keep them looking their best. Fabrication & Furniture Concepts, Fabrication & Furniture Concepts |
Expert article 
437 
