POSSIBLE EFFECT OF GROUND WATER ON CONCRETE STRUCTURES OF NOIDA AND GREATER NOIDA [ ]


Noida and Greater Noida are cities in India under the management of the New Okhla Industrial Development Authority and Greater Noida Industrial Development Authority located in the part of National Capital Region of India. Noida is a city that has grown very fast laterally and vertically in an unpredictable manner. Large number of buildings in the form of group housing societies, residential colonies, shopping complexes, hospitals, flyovers, small bridges etc has been constructed or under construction. Majority of these structures are designed for reinforced cement concrete type. Apart from few structures which have been built with pre-cast concrete or ready mix concrete, vast majority of the structures are being constructed in the conventional way. Ground water is the sole source which is being used for mixing and curing purpose. In present study water samples from twenty five locations of the Noida and Greater Noida region were analyzed for their suitability for mixing and curing purpose in concrete as per the provisions of IS 456-2000. Based on the outcome of the study some critical sectors which could experience different types of problem in concrete structures have been identified. The present paper highlights typical concrete durability problems being faced recently in some concrete structures which were constructed just few years ago or the structures upcoming in these sectors. A mapping has been done to assign the problems which may come in each sector.