comparison between prestressed concrete and reinforced concrete pdf

Comparison between prestressed concrete and reinforced concrete pdf

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The Advantages & Disadvantages of Reinforced Concrete

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In ordinary reinforced concrete , tensile stresses by steel alone and compressive stresses are taken up by concrete. Although steel takes up to the tensile stresses, the concrete at the tensile zone develops minute cracks. Th e load-carrying capacity of such concrete sections can be increased if steel and concrete both are stressed before the application of external loads.

The Advantages & Disadvantages of Reinforced Concrete

Concrete and Steel are one of the most common construction materials even in today, Steel Structures Vs Concrete Structures is an attempt to compare advantages and disadvantages of both materials from constriction and maintenance point of view. Concrete is the second most used material for construction after water in the world. Concrete structure can take compressive stresses very effectively but it cannot take tensile stresses. So the reinforcement is given to concrete where the structure is under the tension load. Concrete is widely used in today construction industry today because of its durability and compatibility. Moreover concrete can be mould in any shape which make it a very useful. Plain cement concrete is a hardened mass obtained from a mixture of cement, sand, gravel, and water in definite proportion.

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In ordinary reinforced cement concrete, the concrete bears the compressive stresses whereas steel individually bears tensile stresses. The concrete underneath the neutral axis is not taken into consideration as it is feeble in tension. While steel consumes the tensile stresses, the concrete in the tensile zone develops tiny cracks. The load bearing strength of such concrete sections is raised when steel and concrete both are stressed prior to enforce the exterior loads. It is the basic idea of prestressed concrete.

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Reinforced concrete RC , also called reinforced cement concrete RCC , is a composite material in which concrete 's relatively low tensile strength and ductility are compensated for by the inclusion of reinforcement having higher tensile strength or ductility. The reinforcement is usually, though not necessarily, steel bars rebar and is usually embedded passively in the concrete before the concrete sets. Modern reinforced concrete can contain varied reinforcing materials made of steel, polymers or alternate composite material in conjunction with rebar or not. Reinforced concrete may also be permanently stressed concrete in compression, reinforcement in tension , so as to improve the behaviour of the final structure under working loads. In the United States, the most common methods of doing this are known as pre-tensioning and post-tensioning. For a strong, ductile and durable construction the reinforcement needs to have the following properties at least Wilkinson reinforced the concrete roof and floors in the two-story house he was constructing.

Concrete is the most widely used material worldwide for construction and has been for centuries. As society has progressed, so too have the building materials we use and that has led to quite a bit of variety in term of the types of concrete we now have available. The most common two are plain concrete and reinforced concrete, and which you use always depends on the project in question. Plain concrete, also known as plain cement concrete or PCC, is most commonly used for paving and flooring. Made from a mix of cement, aggregate, and water the different types of aggregate and ratio of materials used will give different types of cement with slightly different properties. This is one of the main selling points of ready mix concrete as the exact values and types of aggregate can be measured and monitored precisely to provide the qualities that are needed without any variance.


1. Conventional RCC member requires more steel. reinforcement than Pre-stress members. · 2. Amount of stress and moment is subsidised by pre.


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PRESTRESSED CONCRETE OVER REINFORCED CONCRETE AND ARCH

Prestressed concrete PSC is the composite of concrete and prestressed high tensile tendons. In PSC, the internal stress has been introduced under controlled circumstances before loading, to improve the shrinkage resistance of concrete and avoid the tensile cracks. High tensile strength wires are used in prestressed concrete.

The Advantages & Disadvantages Of Plain Concrete

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3 comments

  • Phillip V. 20.04.2021 at 10:00

    Prestressed concrete beams are lighter. By providing the curved tendons and the pre-compression, a considerable part of the shear is resisted. In reinforced concrete beams, high strength concrete is not needed. But in prestressed concrete beams, high strength concrete and high strength steel are necessary.

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  • Portpresvitde1979 21.04.2021 at 03:28

    Comparative Study of Reinforced Concrete and Prestressed Concrete Flexural Abstract- The main aim of the study is to compare the design cross sectional.

    Reply
  • Yve L. 22.04.2021 at 23:55

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