Concrete Structure Crack Measuring Devices - A Case Study of Concrete Dam

Rajkumar Prasad, Mahabir Dixit

Crack, Physical, Chemical, Alkali Aggregate Reaction, Plastic, Groutable, Triaxial

Cracking is a common phenomenon observed in many concrete structures. The cracks can develop due to consequence of plastic shrinkage or constructional movements, overloading concrete elements, creep, chemical reactions inclusive of alkali-aggregate reactions and corrosion etc. Crack width and depth are two important parameters used to determine the extent and severity of existing cracks. Crack monitoring and control procedures are essential to assess stability of the structure and quantify the development of the damage. This paper discusses different instruments/ methods available for evaluation of crack along with a case study of crack monitoring of 92 m high concrete gravity dam.