On-Line Monitoring of Microscopic Fracture Behavior of Concrete Using Acoustic Emission

음향방출을 이용한 콘크리트 부재의 미시적 파괴특성의 On-Line Monitoring

Concrete is an inhomogeneous material consisting of larger aggregates and sand embedded in a cement paste matrix. In this study, an acoustic emission technique has been used to clarify the microscope failure mechanisms of concrete under three point bending test. AE source location has also been done to monitor the activities of internal damage and the progress of microscopic failure path during the loading. The relationship between AE characteristic and microscopic and microscopic failure mechanism is discussed.