Evaluation of Tunnel Lining Concrete Using Ultrasonic Pulse Velocity Method

초음파법을 이용한 무근콘크리트 터널라이닝의 품질평가

Two evaluation techniques of the tunnel lining concrete using ultra sonic velocity method are developed. Modified linear regression technique is proposed to enhance the corelation between the pulse velocity and the compressive strength of core specimens. And bivariate normal distribution is assumed to evaluate the quality of concrete as a terms of compressive strength. A simple corelation table between the pulse velocity and the compressive strength of core specimens are proposed.