Cartridge for use in anchor bolting

Details Cartridge for use in anchor bolting Cartridge for use in anchor bolting

1981-06-25

1983-07-26

Taylor, Dennis

Hydraulic and earth engineering

Earth treatment or control

Chemical

206219, 405260, E21D 2002, B65D 2508

Patent

active

043951627

ABSTRACT:
Reinforcing or fixing elements such as anchor bolts are anchored in a borehole drilled in a substrate such as an underground mine roof with an anchoring cartridge in which a particulate liquid-settable solid component, for example a hydraulic cement, is contained in a liquid-impermeable casing, the solid occupying a volume which is less than the normal free volume of the casing and the cartridge being at least partially evacuated so as to cause the casing to be in contact with the solid component over substantially its whole length within the casing. This ensures that when the cartridge is immersed in an activating liquid, for example water, and the casing perforated, the activating liquid is drawn rapidly into the evacuated space adjacent the solid component over its whole length thereby helping to ensure the formation of a self-setting grouting composition of uniform strength when the cartridge is used.

REFERENCES:
patent: 3367785 (1968-02-01), Finucane et al.
patent: 3419258 (1968-12-01), Ritchie
patent: 3830475 (1974-08-01), Inoue et al.
patent: 4096944 (1978-06-01), Simpson

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