Method and an apparatus for providing a grouted anchorage against hydrostatic pressure
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United States of America Patent
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Mar 3, 1981
Grant Date -
N/A
app pub date -
Mar 8, 1979
filing date -
Mar 8, 1979
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method is disclosed of providing a grouted anchorage in a base formation. A tube having a drill member at its forward end is driven into the base formation through an opening in a wall. An anchor rod is introduced once the desired depth has been reached, liquid mortar is forced through the tube to the forward end of the tube and the tube is withdrawn from the hole. The forward end of the tube is continuously kept closed, sealed from penetration by water. During the initial withdrawal of the tube a corresponding amount of liquid mortar is forced therethrough, the anchor rod being pressed against the drill tip which remains in the base formation.
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