초음파 속도법을 이용한 콘크리트의 고온열화 평가에 대한 연구

Study on Evaluation of High Temperature Degradation of Concrete using Ultrasonic Velocity Method

Concrete has been recognized as a material which is resistant to high temperatures, but chemicophysical property of concrete is changed by the high temperature. So, mechanical properties of concrete may be reduced. So, concrete at high temperature is evaluated mechanical properties for safety inspection. However, research of ultrasonic method is not much. Therefore, the purpose of this study is to NDT(non-destructive test) of 30, 70, 110MPa concrete exposed high temperature using ultrasonic pulse velocity.