Details

Autor(en) / Beteiligte

• Uddin, Farid A.K.M
• Ohtsu, Masayasu

Titel

Micromechanics of corrosion cracking in concrete by AE-SiGMA

Ist Teil von

• Journal of acoustic emission, 2005-01, Vol.23, p.136

Ort / Verlag

Acoustic Emission Group

Erscheinungsjahr

2005

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• Nucleation of micro-cracking due to corrosion is identified by AE-SiGMA, by which crack kinematics of locations, types and orientations are quantitatively determined. These kinematical outcomes are obtained as three-dimensional (3-D) locations and vectors, and 3-D visualization is developed by using VRML (Virtual Reality Modeling Language). Thus, the cracking modes are investigated for different crack patterns and the cracking mechanisms of 594 events were identified. It is confirmed that the mechanisms of micro-cracking due to corrosion of reinforcement are nearly equally of the mode-I, mixed-mode and mode-II failure. This is because cracks in concrete propagate in zigzag path, dynamic motions on micro-crack planes consist of the crackopening mode and the shear mode.