Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
258760 | Construction and Building Materials | 2012 | 8 Pages |
Mechanisms behind explosive spalling of high-strength concrete during a heating test were investigated on the basis of acoustic emission (AE) measurements of wet and air-dried specimens. The relation between the measured values of the internal temperature and vapour pressure and AE events produced by micro-cracking were investigated. It was found that AE events were indeed indicative of the state of the explosive failure process. Furthermore, b-value analysis was successfully applied to clarify the fracture process, regardless of the moisture content of the specimens.
► This study used the AE method for detecting the explosive spalling process in HSC. ► It was found that AE events were indeed indicative of the state of the explosive failure process. ► b-Value analysis was successfully applied to clarify the fracture process.