Laboratory-based coupon testing for the understanding of SCC in rockbolts

Coupon testing has been used extensively to understand the effects of general corrosion on engineering materials within their operational environment. This study examined the use of various coupon specimens to examine stress corrosion cracking (SCC) of rockbolts in the underground mining environment. The standard ASTM G39 bend beam SCC specimen, as well as a pin-loaded slotted specimen, was used in this investigation. It was identified that the...