In-line ultrasound based rheology - A new tool for the measurement of flow and rheological properties of cement based grout
2013 (English)In: 47th US Rock Mechanics / Geomechanics Symposium 2013, American Rock Mechanics Association (ARMA), 2013, 1738-1746 p.Conference paper (Refereed)
Measuring the rheological properties of cement based grouts and observing the change of the properties with time directly in-line are highly required, however, still unavailable during the grouting operation. The 'Ultrasound Velocity Profiling' combined with 'Pressure Difference' (UVP+PD) method is a promising novel method for determining the rheological properties, e.g. viscosity and yield stress of used grout directly in-line, in real time and in a flowing condition. Followed by a pre-study, a laboratory based set-up consisting a progressive cavity type of pump and a flow loop were used for the experiments. In addition, a data recording system (LOGAC) was used as a reference. A widely used grouting cement, micro fine injektering 30 (IC30) of water to cement ratio 0.6, and 0.7 were used in this study. After performing a series of successful feasibility tests, it was found possible to determine the rheological properties of cement based grouts directly in-line and the change of the properties of cement grout with time was observed. The 'UVP+PD' method was also found an effective tool for the flow visualization, flow measurement and grout pump characterization. The future work of this project will focus on implementing this ultrasound based methodology in the grouting rigs for field applications.
Place, publisher, year, edition, pages
American Rock Mechanics Association (ARMA), 2013. 1738-1746 p.
Cement based grouts, Data recording systems, Field application, Grouting operations, Pressure differences, Rheological property, Ultra-sound velocities, Water to cement (binder) ratios
IdentifiersURN: urn:nbn:se:kth:diva-143323ScopusID: 2-s2.0-84892864963ISBN: 978-162993118-0OAI: oai:DiVA.org:kth-143323DiVA: diva2:706257
47th US Rock Mechanics / Geomechanics Symposium 2013; San Francisco, CA; United States; 23 June 2013 through 26 June 2013
QC 201403192014-03-192014-03-192014-03-19Bibliographically approved