Instrumented Packers: A Revolution In Pressure Monitoring For Rock Grouting-Video

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Video Summary

The presentation traces the evolution of grout-pressure monitoring, from early projects using high pressures and collar gauges to modern, stage-based grouting with transducers, flow meters, and computer monitoring. Consistent pressure measurement helps reduce uncertainty, assess how foundations respond, and determine whether grout can enter the formation. Effective pressure accounts for gauge readings, grout-column head, groundwater, and line losses. Today, pressure can be measured directly in the grouting stage using a transducer through the packer, simplifying calculations and improving accuracy. Though relatively inexpensive, this method provides valuable information and is increasingly included in project specifications.

Keywords

grout-pressure monitoring

stage-based grouting

pressure transducers

flow meters

foundation response