H
Håkan Stille
Researcher at Royal Institute of Technology
Publications - 90
Citations - 2250
Håkan Stille is an academic researcher from Royal Institute of Technology. The author has contributed to research in topics: Grout & Rock mass classification. The author has an hindex of 26, co-authored 89 publications receiving 1939 citations.
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The Äspö Pillar Stability Experiment: Part II—Rock mass response to coupled excavation-induced and thermal-induced stresses
TL;DR: In this paper, a 1m-thick pillar was subject to coupled excavation-and thermal-induced stresses to induce brittle rock mass yielding, and the yielding strength of the heterogeneous and fractured Aspo diorite was evaluated at eighteen discrete locations using data from the displacement, acoustic emission and thermal monitoring systems.
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Penetrability due to filtration tendency of cement-based grouts
Daniel Eklund,Håkan Stille +1 more
TL;DR: The possibilities of sealing structures are of great importance from both an economical and environmental point of view as discussed by the authors, and Grouting as a method of strengthening and sealing rock, soil and concrete is widely used.
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Prediction of groutability from grout properties and hydrogeological data
Gunnar Gustafson,Håkan Stille +1 more
TL;DR: In this article, the grout penetration and grout take in parallell planar fractures are discussed and general expressions for these entities are also derived for fractures with varying width, and the applicability of the findings is evaluated using field data from grouting of the access tunnel of the Aspo Hard Rock Laboratory, Sweden.
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Ground behaviour and rock engineering tools for underground excavations
Arild Palmström,Håkan Stille +1 more
TL;DR: In this paper, the main types of rock engineering tools are briefly described, indicating their limits, and a matrix is presented showing their applicability to various types of ground behaviour, including gravity driven, stress induced and water influenced.
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Support of weak rock with grouted bolts and shotcrete
Håkan Stille,M. Holmberg,G. Nord +2 more
TL;DR: In this paper, a closed form elastoplastic analytic solution of grouted bolts considering four different approaches to bolt performance was presented, and the analytical results were compared with bolt load data and readings obtained from instrumented bolts and extensometers in the Kielder Experimental tunnel excavated in mudstone.