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This document discusses cement-bentonite grout as the preferred backfill material for borehole instruments. It summarizes that cement-bentonite grout sets up into a solid form, is more forgiving to mix, and can be adjusted for site conditions, unlike bentonite grouts which remain soupy. The strength of cement-bentonite grout can be designed to match the surrounding soil. Proper grout permeability is important for piezometers to obtain accurate measurements.

Author

militia14

Language

EN