ABSTRACT
Rock grouting is a multidisciplinary engineering science. The last decade has deepened the understanding of hydrogeology, rock mass response, material science rheology and theories of grout spread in rock fractures. Grouting has moved from craftmanship to engineering – a paradigm in the approach to desig and execution. Design of the basic geotechnical structures is a defined objective of the consultant’s work. The design work has changed over time, however, from primarily based on application of prescriptive measures to calculations. It is a transformation from black magic to art of engineering.