Search Results - "Draganovic, Almir"

Ultrasonic dispersion of hard dispersed ultrafine milled cement-based grout for water sealing of fractured hard rock by Draganović, Almir, Karamanoukian, Antranik, Ulriksen, Peter, Larsson, Stefan

“…•Disk or rotor–stator dissolver is not suitable to disperse ultrafine milled cement.•Ultrasound is much more effective than disc or rotor–stator…”
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Dispersion of microfine cement grout with ultrasound and conventional laboratory dissolvers by Draganović, Almir, Karamanoukian, Antranik, Ulriksen, Peter, Larsson, Stefan

“…[Display omitted] •Laboratory dissolver with disk is not effective in dispersing microfine cement.•Laboratory dissolver with rotor-stator technique is much…”
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Filtration of cement-based grouts measured using a long slot by Draganović, Almir, Stille, Håkan

“…•We manufactured a long slot with a defined constriction of 75μm.•We used it to examine filtration of three cement based grouts with d95=12–30μm.•Filtration…”
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Filtration and penetrability of cement-based grout: Study performed with a short slot by Draganović, Almir, Stille, Håkan

“…► Penetration and filtration of cement-based grout has been studied with a short slot. ► Grouts based on cements with a d 95 of 32 μm had the best…”
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Filtration of silica particles from a low-pH cementitious grout by Draganović, Almir, Lagerblad, Björn

“…[Display omitted] •We investigated filtration of low-pH fresh grout based on cement and silica fume.•There is no significant separation between cement and…”
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On using the thin fluid-layer approach at ultrasonic frequencies for characterising grout propagation in an artificial fracture by Place, Joachim, Ghafar, Ali Nejad, Malehmir, Alireza, Draganovic, Almir, Larsson, Stefan

“…Grouting the fractures encountered when constructing underground facilities is of primary importance for environmental, safety and economic reasons. The…”
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An Experimental Approach to the Development of Dynamic Pressure to Improve Grout Spread by Ghafar, A. N., Mentesidis, A., Draganovic, A., Larsson, S.

“…Dynamic grouting is one of the methods to improve grout spread in rock that have been investigated since 1985. The results were promising, but all tests were…”
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Uncertainties in Grout Penetrability Measurements; Evaluation and Comparison of Filter pump, Penetrability Meter and Short Slot by Nejad Ghafar, A., Ali Akbar, S., Al-Naddaf, M., Draganovic, A., Larsson, S.

“…To measure grout penetrability in fractured hard rock, various measuring instruments have been developed over the years. Penetrability meter and Filter pump…”
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