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To mobilise the compressive strength of the full thickness of the slab. For an explanation see below.
Concrete tends to be stronger in compression than tension. If you can imagine a large flat slab of concrete that is much wider than it is thick (for example a slab to be used in the construction of the floor of an upper level of a house), it will be supported at the corners or edges. This allows the centre of the slab to deform vertically downwards (by a very small amount).
This deformation due to it's own self weight generates stresses in the slab. You now need to imagine that there was a straight line drawn along the centre of the edge of the slab from one end to the other. When the slab deforms this line will become a curve or arch. This is in fact what the slab is doing - performing as an arch. This means that the lower portion of the slab (below the line will have stretched and be under tension and the upper portion of the slab will have been compressed. Now in this case the failure strength of the arch is being controlled by the tensile strength of the slab which is much lower than it's compressive strength.
As such when the concrete is being formed, high tensile strength steel wires are connected to anchor points in the factory and they are stretched or placed under a tensile stress. The concrete is than poured into a mould around the steel wire and allowed to set (or cure). The concrete than adheres to the steel cable. Once the concrete has fully hardened the stell wires are cut from the anchor points and the steel wires attempt to return to their original size, This stress is transferred to the concrete as compression by friction due to the bond between the c able and concrete.
Now when the concrete slab is used as a floor it begins to deform under it's own weight, however the pre-stressed steel wires already under tension act to pull the entire slab including the base back into a compressive stress state meaning that the whole of the slabs compressive strength is mobilised rather than just the upper half and this effectively acts to make the slab stronger.
There are a number of differing methods of making steel reinforce pre-stressed concrete and for further information, please see the related link.
What else can I help you with?
Why it is need to use high strength concrete in prestressed concrete?
to offer high resistance in tansion,shear and bond
Is carbon steel and high tensile steel the same?
No, carbon steel and high tensile steel are not the same. Carbon steel is a type of steel where the primary alloying element is carbon, and it can have varying carbon content, affecting its hardness and strength. High tensile steel, on the other hand, is specifically designed to have high strength and tensile properties, often achieved through alloying elements like manganese, nickel, or chromium, and specific heat treatments. While high tensile steel can be a type of carbon steel, not all carbon steels are classified as high tensile steel.
Why concrete is reinforced with steel rods and not brass rods?
Concrete is reinforced with steel rods because steel has a similar coefficient of thermal expansion to concrete, ensuring that both materials expand and contract at similar rates under temperature changes. Steel also has high tensile strength, making it effective at handling the tensile forces that concrete alone cannot withstand. Brass, while resistant to corrosion, lacks the necessary tensile strength and bonding characteristics with concrete, making it less effective for reinforcement. Additionally, steel is more cost-effective than brass for construction applications.
In a concrete masonry structure steel reinforcement is embedded in such a manner that the two materials act together in what force?
In a concrete masonry structure, steel reinforcement is embedded to work together with concrete in resisting tensile forces. Concrete is strong in compression but weak in tension, while steel has high tensile strength. By combining these materials, the reinforced concrete structure effectively handles both compressive and tensile stresses, enhancing its overall strength and durability. This synergy allows the structure to perform better under various loading conditions, such as bending and shear forces.
Where does the high tensile steels are used in the ship?
High Tensile Steel (HTS) is generally used for prestressing tendons.
Why are bridges made of steel and concrete?
Steel is used for its high tensile strength and the concrete is used for its high compression strength.
Why it is need to use high strength concrete in prestressed concrete?
to offer high resistance in tansion,shear and bond
What is high tensile?
High tensile steel is strong steel. It is 10 times stronger than wood and more than twice the tensile strength of mild steel. High tensile steel is commonly used in highway guardrails.
Is carbon steel and high tensile steel the same?
No, carbon steel and high tensile steel are not the same. Carbon steel is a type of steel where the primary alloying element is carbon, and it can have varying carbon content, affecting its hardness and strength. High tensile steel, on the other hand, is specifically designed to have high strength and tensile properties, often achieved through alloying elements like manganese, nickel, or chromium, and specific heat treatments. While high tensile steel can be a type of carbon steel, not all carbon steels are classified as high tensile steel.
Why concrete is reinforced with steel rods and not brass rods?
Concrete is reinforced with steel rods because steel has a similar coefficient of thermal expansion to concrete, ensuring that both materials expand and contract at similar rates under temperature changes. Steel also has high tensile strength, making it effective at handling the tensile forces that concrete alone cannot withstand. Brass, while resistant to corrosion, lacks the necessary tensile strength and bonding characteristics with concrete, making it less effective for reinforcement. Additionally, steel is more cost-effective than brass for construction applications.
Is Aluminuim in High Tensile Steel?
No
Why use high tensile steel?
High tensile steel put simply is used where structures require high tensile strength. Tensile stress is where the forces on a material are "pulling" from each end away from the centre. Steel can be alloyed with certain materials such as aluminum to create a material that is stronger under tensile loading. An example of where high tensile steel is required is the cables of the ANZAC bridge that support its deck. Hope this helps..
In a concrete masonry structure steel reinforcement is embedded in such a manner that the two materials act together in what force?
In a concrete masonry structure, steel reinforcement is embedded to work together with concrete in resisting tensile forces. Concrete is strong in compression but weak in tension, while steel has high tensile strength. By combining these materials, the reinforced concrete structure effectively handles both compressive and tensile stresses, enhancing its overall strength and durability. This synergy allows the structure to perform better under various loading conditions, such as bending and shear forces.
Pre stressed concrete compared to Post tensioned concrete?
Prestressed concete made using high tensile wires which is stressed (as per the design load) before concreting, and post tensioned concrete made of Strands covered with duct, in this, wires/strnads are stressed after concreting then the ducts are grouted using cement slurry..
Why steel is used to reinforce concrete?
Steel is used to reinforce concrete because it makes the concrete much stronger and helps it handle more pressure. Concrete is very good at withstanding heavy weight (compression), but it can easily crack or break when it is pulled or bent (tension). Steel, on the other side, is very strong in tension. Also, steel and concrete expand and contract at similar rates in heat and cold, so they stay bonded well over time. This combination makes reinforced concrete strong, durable, and safe for building structures like bridges, buildings, and roads.
What has the author J A Ramirez written?
J. A. Ramirez has written: 'Review of design procedures for shear and torsion in reinforced and prestressed concrete' -- subject(s): Concrete beams, Prestressed concrete construction, Reinforced concrete construction, Shear (Mechanics), Torsion 'Robust Speech Recognition and Understanding' 'Transfer, development, and splice length for strand/reinforcement in high-strength concrete' 'Experimental verification of design procedures for shear and torsion in reinforced and prestressed concrete' -- subject(s): Concrete beams, Shear (Mechanics), Testing, Torsion 'Proposed design procedures for shear and torsion in reinforced and prestressed concrete' -- subject(s): Concrete beams, Prestressed concrete beams, Shear (Mechanics), Torsion
When did Hyundai start to use high tensile steel in there elantra models?
Hyundai have always used high tensile steel in certain components of all their vehicles.
