Sökning: "Grout"
Visar resultat 1 - 5 av 37 avhandlingar innehållade ordet Grout.
1. Rheology of cement grout : Ultrasound based in-line measurement technique and grouting design parameters
Sammanfattning : Grouting is performed in order to decrease the permeability and increase the stiffness of the material, especially soil and rock. For tunnelling and underground constructions, permeation grouting is done where cement based materials are pumped inside drilled boreholes under a constant pressure, higher than the ground water pressure. LÄS MER
2. An Experimental Study to Measure And Improve the Grout Penetrability
Sammanfattning : An essential demand in any underground facility is to seal it against the water ingress to reduce the time and cost of the construction and the corresponding environmental hazards. To achieve this, obtaining sufficient grout spread is of great importance. LÄS MER
3. Strength Criteria on Grouting Agents for Hard Rock- Laboratory studies performed on gelling liquid and cementitious grout
Sammanfattning : Grouting is usually successful in excavations at moderate depths and groundwater inflow. At great depths, in post-grouting or in rock with a large inflow of water, grouting is more problematic due to the forces from groundwater. LÄS MER
4. Design of grout curtains under dams founded on rock
Sammanfattning : Grouting has long been implemented as a ground improvement technique to reduce the seepage through the rock mass. Grout curtains are usually constructed under dams as a barrier to prevent leakage from the reservoir. So far, the grout curtains under dams have mainly been designed by using an empirical design approach. LÄS MER
5. 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