Method of fixation of anchoring bolts in boreholes

Details Method of fixation of anchoring bolts in boreholes Method of fixation of anchoring bolts in boreholes

1982-12-29

1985-06-25

Husar, Cornelius J.

Hydraulic and earth engineering

Earth treatment or control

Chemical

166295, E21B 3313, E21D 2002

Patent

active

045251037

ABSTRACT:
Method for bonding of anchoring bolts in boreholes, in which an anchoring bolt is pushed with a rotary motion into a twin-chamber cartridge, one compartment of which is filled with a polyisocyanate component and the other one with a hydroxyl component, prepolymer from the conversion of polyisocyanates with one or several difunctional polyols of the molecular weight range 800-5000, preferably 1600-3000, being used as polyisocyanate component.

REFERENCES:
patent: 2867278 (1959-01-01), Mallory
patent: 2889883 (1959-06-01), Santora
patent: 3719050 (1973-03-01), Asao et al.
patent: 3925996 (1975-12-01), Wiggill
patent: 4353463 (1982-10-01), Seemann
patent: 4386877 (1983-06-01), McDowell
patent: 4402633 (1983-09-01), Self

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