Corrosion protected tensioning member for a prestressable anchor

Details Corrosion protected tensioning member for a prestressable anchor Corrosion protected tensioning member for a prestressable anchor

1978-02-03

1979-02-20

Stein, Mervin

Hydraulic and earth engineering

Earth treatment or control

Chemical

F21D 2002

Patent

active

041404297

ABSTRACT:
A profiled tensioning rod or combination of rods is provided at the end which is to be inserted into the bore hole of a rock, with a corrosion protective tube formed in three parts, an anchoring part adapted to extend over the greater portion of the anchored end of the rod, a "free steel part" adapted to extend over the (initially) unconnected part of the anchoring rod which extends into the bore hole and a junction part to which the other two parts are connected. The junction part extends beyond the periphery of the other parts of the tube and is large enough to prevent any substantial flow of cement outwardly from the space between the anchoring part and the bore hole. The free steel part of the tube contains a deaerating conduit so that when the rock formation is stabilized after the various borings, etc., the free steel part of the bore hole may be cemented.

REFERENCES:
patent: 3306051 (1967-02-01), Howlett
patent: 3326004 (1967-06-01), Williams
patent: 3379019 (1968-04-01), Williams

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