Stress corrosion cracking of rock bolts
Date
2004
Authors
Gamboa, E.
Villalba, E.
Atrens, A.
Editors
Atrens, A.
Advisors
Journal Title
Journal ISSN
Volume Title
Type:
Conference paper
Citation
Structural integrity and fracture : proceedings of the International Conference, SIF2004, Brisbane, Australia, 26-29 September 2004 / A. Atrens ... (ed.) [et al.]: pp.127-134
Statement of Responsibility
Erwin Gamboa, Ernesto Villalba and Andrej Atrens
Conference Name
Structural Integrity and Fracture International Conference (2004 : Brisbane, Qld.)
Abstract
The aim of this research was to understand the Stress Corrosion Cracking (SCC) of rock bolts. The laboratory tests produced fracture surfaces similar to those from service. The fracture surface has the following types: TTS (Tearing Topography Surface) at the origin of the SCC, CIS (Corrugated Irregular Surface) and qMVC (quasi Micro Void Coalescence) at the interface with the final fast fracture. The experimental study elucidated the environmental conditions leading to rock bolt SCC, and was used to determine the threshold stress and the threshold potential. A hydrogen embrittlement mechanism is proposed.