Comparison of Pre-Stressed Concrete, Partially Pre-Stressed Concrete and Reinforced Concrete in Terms of Different Aspects

2989 WordsOct 26, 201112 Pages
1. INTRODUCTION 1.1 Background The report will mainly focus on the differences between reinforced, prestressed and partially stressed concrete. These concrete reinforcing methods differ in the period they have been used. Reinforced concrete was developed by a nursery owner in Paris in 1867, Joseph Monier, applying it to practical use for the first time (Salmon & Wang, 2007). Prestressed concrete’s discovery dates back to the late 1800’s. Freyssinet was one of the first engineers who used this method and realised that, for this method, high quality concrete with very high tensile steel wires, stressed as high as possible was needed (Chris Burgoyne, 2005). The chief purpose of reinforcement methods is to strengthen concrete in its…show more content…
Sealants also have to be applied to ensure that corrosion does not take place ( Darwin, D. 2000.). COSTS This concrete method is probably the cheapest one available for removing tensile stresses in concrete. This is mostly a result of the fact that no special equipment is needed for the installation of this reinforcement. Reinforcement is only placed in concrete, without any specialized procedures. DEFLECTION Acceptable deflection is controlled by the serviceability requirements for a structure, for example, the total allowable deformation of the interacting components which are supported by the component undergoing deflection. General reinforced concrete does not have a significant influence on deflection and cannot be precisely predicted (Salmon & Wang, 2007). Reinforced concrete can control the deflection in a beam to a small extent, causing the beam to bend less. ELASTICITY & STRENGTH Strength is defined as the maximum load that a material can carry. The strength of concrete usually increases when other properties of the material improves. Combined with the simple tests for strength, it makes strength a common and reliable way of measuring the quality of concrete. The reversible deformation of material is known as elasticity. When a material displays elastic behaviour, when subjected to a stress, the strain developed is fully recovered when the stress is removed from the material. Materials have a critical level, the elastic

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