Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
A study on acoustic emission characteristics of fly ash cement mortar under compression
Acoustic emission (AE) monitoring of the integrity of material has been widely regarded as a potentially new non-destructive testing method. Although the AE technology belongs to the category of non-destructive testing (NDT) methods, it differs from the other methods in three significant respects:(1) AE can be used for a real-time inspection; (2) AE signals are emitted from within the tested material rather than being generated by the NDT intruments; and (3) AE is a dynamic inspection technique in that it provides a response to dicontinuity growth under an imposed structural stress. This study is devoted to the investigation of AE characteristics of fly ash cement mortar (FACM) under uniaxial compression. The test results of 72 speciments were reported. The major experimental parameters include the AE signals, the amount of cement replaced by fly ash, compressive strength, strain and age of the FACM. The test results showed that the characterstics of the detected AE signals during the compressive process contain potentially useful information for judging the stability of the specimens under compression. Good correlation between the AE signals and the major parameters of FACM was observed. A study on the AE Kaiser effect showed that Kaiser effect existed in FACM up to 80% of its ultimate strength. In addition the study also indicated that a change of compressive loading mode did not affect the existence of the Kaiser effect.
A study on acoustic emission characteristics of fly ash cement mortar under compression
Acoustic emission (AE) monitoring of the integrity of material has been widely regarded as a potentially new non-destructive testing method. Although the AE technology belongs to the category of non-destructive testing (NDT) methods, it differs from the other methods in three significant respects:(1) AE can be used for a real-time inspection; (2) AE signals are emitted from within the tested material rather than being generated by the NDT intruments; and (3) AE is a dynamic inspection technique in that it provides a response to dicontinuity growth under an imposed structural stress. This study is devoted to the investigation of AE characteristics of fly ash cement mortar (FACM) under uniaxial compression. The test results of 72 speciments were reported. The major experimental parameters include the AE signals, the amount of cement replaced by fly ash, compressive strength, strain and age of the FACM. The test results showed that the characterstics of the detected AE signals during the compressive process contain potentially useful information for judging the stability of the specimens under compression. Good correlation between the AE signals and the major parameters of FACM was observed. A study on the AE Kaiser effect showed that Kaiser effect existed in FACM up to 80% of its ultimate strength. In addition the study also indicated that a change of compressive loading mode did not affect the existence of the Kaiser effect.
A study on acoustic emission characteristics of fly ash cement mortar under compression
Zu akustischen Emissionscharakteristiken von Flugaschenzementmörtel unter Druck
Tam, M.T. (Autor:in) / Weng, C.C. (Autor:in)
Cement and Concrete Research ; 24 ; 1335-1346
1994
12 Seiten, 10 Bilder, 1 Tabelle, 15 Quellen
Aufsatz (Zeitschrift)
Englisch
A Study of Acoustic Emission Characteristics of Fly Ash Cement Mortar Under Compression
| Online Contents | 1994
A Study of Acoustic Emission Characteristics of Fly Ash Cement Mortar Under Compression
| British Library Online Contents | 1994
Acoustic emission characteristics of mortar under compression
| Tema Archiv | 1992