Hollow rebar for crosshole sonic logging access tubes and longitudinal concrete reinforcing in drilled shafts

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United States of America Patent

PATENT NO 9074473
APP PUB NO 20120314540A1
SERIAL NO

13405623

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Abstract

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Hollow rebar may be used for structural reinforcement in a drilled shaft and to provide access tubes for a sonic integrity testing probe. Rebar (short for reinforcing bar) is steel bar used as a tensioning device in reinforced concrete that holds the concrete in compression. According to the system described herein, hollow rebar may provide high strength reinforcement in the drilled shaft while at the same time providing an access tube for a sonic integrity testing process, such as crosshole sonic logging (CSL). The high strength hollow rebar, having ridges, threads and/or other appropriate surface deformations, provides improved adhesion to concrete, thus eliminating the problem of debonding associated with non-structural access tubes made of smooth PVC or steel pipe.

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Patent Owner(s)

Patent OwnerAddress
ASCHENBROICH HORST K12646 54TH AVENUE SURREY BC V3X 3C2

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Alter, Josef K Descanso, US 1 12
Aschenbroich, Horst K Surrey, CA 3 5

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