ABSTRACT
Geotechnical core logging is one of the most widely used methods to investigate and characterize rock mass for design and construction of tunnels and other rock engineering structures. Despite the widespread use of the method there is a lack of an established industry wide methodology for geotechnical core logging within the Swedish rock engineering industry. This results in inconsistent data collection and increased risk for the deviation of the forecasted ground conditions from reality. Through literature review and qualitative interviews with industry professionals, this study showed significant shortcomings in the existing standards and guidelines. A need for industry wide standard on geotechnical core logging was identified. It should include, at the very least, improved standards on core handling, discontinuity mapping, strength testing sample bias, and data storage. To achieve more objectivity in core logging, utilising automation and new technologies is also encouraged.
