Search for dissertations about: "Cement grouts"
Showing result 1 - 5 of 14 swedish dissertations containing the words Cement grouts.
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1. Rheology of cement grout : Ultrasound based in-line measurement technique and grouting design parameters
Abstract : 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. READ MORE
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2. On the measurement and application of cement grout rheological properties
Abstract : The rheological properties of cement-based grouts play a key role in determining the final spread in grouted rock formations. Rheologically, cement grouts are known to be complex thixotropic fluids, but their steady flow behavior is often described by fitting the simple Bingham constitutive law to flow curve data. READ MORE
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3. Penetrability due to filtration tendency of cement based grouts
Abstract : 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. READ MORE
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4. Rock grouting design: Rheological aspects and radial flow visualizations with ultrasound
Abstract : The rheological properties of cement-based grouts play a crucial role indetermining the final spread in grouted rock formations. In rheological terms,cement grouts are known to be complex time-dependent yield stress fluids,but their steady flow behavior is often described by the simple Binghamconstitutive law. READ MORE
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5. Bleeding and Filtration of Cement-Based Grout
Abstract : Grouting is a common method of sealing rock around tunnels to reduce or stop water inflow. Successful grouting significantly minimizes the maintenance cost and safety of the tunnel. Some questions about bleeding and penetrability of the grouts have to be examined more closely to carry out a successful grouting. READ MORE