Correlation between changes in dynamic properties and remaining carrying capacity: Laboratory tests with reinforced concrete beams

摘要: The increasing number of concrete structures deteriorating due to alkali-silica reactions and frost-thaw influence is giving rise a need for inspection methods that will give an early indication incipient deterioration and, if possible, information on the rate deterioration. In this study, dynamic methods, i. e. change in natural frequencies, damping sound velocity, have been evaluated when used R.C. beams exposed cycles. It concluded while it still difficult observe changes carrying capacity surface cracking.