Mobility Engineering by Mahesh Chandra Tandon & Purnendu Ghosh

Author:Mahesh Chandra Tandon & Purnendu Ghosh
Language: eng
Format: epub
Publisher: Springer Singapore, Singapore

2.6Concrete: As explained below concrete is worldwide the predominant material for construction of bridges. The beauty of concrete is that it can be built to almost any shape due to its moulding characteristics. Hence it is a very good material to smoothen out transitions as mentioned above and it allows incorporation of architectural features into external surfaces of for example piers and parapets.

3 Impact During Construction

3.1General: Construction of a bridge or viaduct is not a matter of days but a matter of 2–3 years. Construction happens along existing road corridors, which are generally jammed by cars and people. Hence it is imperative to select structural concepts, which allow to move as much of the construction activity off site. Concrete is worldwide the predominant material for construction of bridges due to fact that main components are almost always locally available and maintenance is minimum if design, detailing and construction are correctly carried out. Technologies are from precast segments, which span over the full width of the deck and are held together with longitudinal prestressing tendons. This eliminates need for any false work and removes almost completely need for casting of concrete on site.

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