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Kaiser effect observation in reinforced concrete structures and its use for damage assessment

Vidya Sagar R., Raghu Prasad B. K., Singh R. K.

Archives of Civil and Mechanical Engineering

2015

Vol. 15, no. 2

548--557

Reinforced concrete (RC) beams of span 3 m were tested under incremental cyclic load at different loading rates and simultaneously during the fracture process in the RC beams acoustic emissions (AE) were recorded. An attempt has been made to study the Kaiser effect as a measure of damage in RC beams. It was observed that RC beams made with high strength concrete under incremental cyclic loading showed an obvious Kaiser effect before the failure load. The results may be useful to study the damage in concrete structures and provide a reference for the application of Kaiser effect in engineering practice.