Sökning: "Stille"
Visar resultat 11 - 15 av 39 avhandlingar innehållade ordet Stille.
11. Penetrability due to filtration tendency of cement based grouts
Sammanfattning : Grouting as a method of strengthening and sealing rock, soil and concrete is widely used. The possibilities of sealing structures are of great importance from both an economical and environmental point of view. The cost of grouting has in certain projects been as high as the cost for the blasting and excavation of the tunnel. LÄS MER
12. Behaviour of Rock Fractures under Grout Pressure Loadings : Basic Mechanisms and Special Cases
Sammanfattning : .... LÄS MER
13. Rock mass response during high pressure grouting
Sammanfattning : The sealing of hard jointed rock by grouting involves several complicated mechanical systems. The result is a complex coupled system of hydro- logical and mechanical precesses. In order to determine the higher order effects of the resulting system the fracture deformations must be assessed. LÄS MER
14. Seasonal change in defensive coloration in a shieldbug
Sammanfattning : Protective coloration such as aposematism and crypsis occurs in many insects but only a few species alter their defensive strategy during the same instar. We hypothesize the adult shield bug Graphosoma lineatum with an alternating black and non-melanised longitudinal striation exhibit such a change in defensive coloration. LÄS MER
15. Shear Strength of Unfilled and Rough Rock Joints in Sliding Stability Analyses of Concrete Dams
Sammanfattning : The horizontal water load combined with uplift forces implies that concrete damsare sensitive for sliding. At the same time, the safety of concrete dams againstsliding in the rock foundation is associated with large uncertainties. One of themain uncertainties regards the shear strength of rock joints. LÄS MER