Measuring and testing – Specimen stress or strain – or testing by stress or strain... – Specified electrical sensor or system
Patent
1992-10-23
1995-01-03
Raevis, Robert
Measuring and testing
Specimen stress or strain, or testing by stress or strain...
Specified electrical sensor or system
73786, 73803, G01N 300
Patent
active
053775481
ABSTRACT:
The present invention relates to a method of instrumenting an already erected concrete or rock structure in order to determine the state of deformation of that structure. A cylindrical inclusion made of concrete having substantially the same mechanical properties as the concrete or the rock of the structure is inserted into a hole drilled into the concrete or rock. Sensors capable of detecting deformations are embedded in the concrete of the inclusion. The empty space between the inclusion and the hole is tightly filled with a grout whereby any deformation of the concrete or rock structure also deforms the inclusion and is therefore detected by the sensors embedded therein. The invention also extends to the inclusion and the so instrumented concrete or rock structure.
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Raevis Robert
Universite de Sherbrooke
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