Abstract
Over head water tanks, made up of reinforced concrete are more common due to the fact that it can be easily cast in any desired shape and size. The durability of such tanks may get affected due to external agents like wind, air etc. and needs maintenance periodically. The corrosion of reinforcement is the major distress of any reinforced concrete structure, and these tanks also face the same problem. Once the corrosion of steel happens, the satisfactory performance of the reinforced concrete tanks gets affected and distress starts in the form of minor cracks. If left unchecked, the effects of corrosion may propagate further and may lead to structural failure in due course. In this case study, many overhead tanks made up of reinforced concrete were studied, and their types of distress along with remedial measures are suggested. Keywords: Maintenance, Rehabilitation, Water Tanks
Highlights
Distress signals in the observed water tanks ranged from seepage, cracks etc in different parts of the water tanks
Crack observations were noticed on different parts of the structure like the columns, ring beams, walls of the tanks etc A total of about 250 tanks were studied, which were located in different parts of the country
Cracks in the concrete columns, occurring in 16% of the tanks suggested that poor quality of construction was maintained
Summary
Distress signals in the observed water tanks ranged from seepage, cracks etc in different parts of the water tanks. The corrosion effects in a water tank happens mainly due to seepage into the layer of concrete, considering the fact that the concrete is always in touch with the water on the inside of the wall thickness. Crack observations were noticed on different parts of the structure like the columns, ring beams, walls of the tanks etc A total of about 250 tanks were studied, which were located in different parts of the country.
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