ABSTRACT
ABSTRACT: In this study is devoted to the investigation of the Acoustic Emission (AE) signals in HPFRCC under monotonic and cyclic uniaxial compressive loading, and total four series were tested. The major experimental parameters include the type of fiber (PE and PVA), the hybrid type with steel cord and loading pattern. The test results showed that the damage progress by compressive behavior of the HPFRCC is characteristic for the hybrid fiber type and volume fraction. And from AE parameter value, it is found that the second and third compressive load cycle resulted in successive decrease of the amplitude as compared with the first compressive load cycle. Also, the Kaiser effect existed in HPFRCC specimens up to 80% of its ultimate strength. These observations suggested that the AE Kaiser effect has good potential to be used as a new tool to monitor the loading history of HPFRCC.
