Embedded sensor system for measurement and monitoring of the pore solution electrical resistivity in concrete materials and structures
AssigneeThe Penn State Research Foundation
InventorsFarshad Rajabipour, Andrew Drach, Nima Kargah-Ostadi, Gopakumar Kaladharan, Kostiantyn Vasylevskyi, Borys Drach
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Abstract
The present invention relates in part to an embedded sensor for measuring the electrical resistivity or conductivity of pore solution in concrete materials and structures, wherein the sensor comprises a synthetic nanoporous ceramic, or nanoporous polymer, or cementitious material with controlled pore size. The present invention also relates to a method of measuring the electrical resistivity of pore solution in a concrete sample or a concrete structure.
Claims20
A concrete pore solution resistivity/conductivity sensor comprising:
- a first electrode;
- a second electrode spaced from and opposite said first electrode, wherein the first electrode is configured to pass an alternating current to the second electrode;
- and
- a space between the first and second electrode that is occupied by a nanoporous matrix;
- said first and second electrodes being situated on a common axis or parallel axes and each having electrical leads connected thereto;
- and
- wherein said electrical leads extend through and outside the nanoporous matrix.
A concrete pore solution resistivity/conductivity sensor comprising:
- a solid nanoporous matrix having an outer surface;
- a first electrode in contact with the nanoporous matrix;
- a first electrical lead in contact with the first electrode;
- a second electrode in contact with the nanoporous matrix;
- a second electrical lead in contact with the second electrode;
- wherein the first electrode is configured to pass an alternating current to the second electrode;
- and
- wherein the first and second electrodes are situated on a common axis or parallel axes;
- and
- wherein the first and second electrical leads are accessible from the outer surface of the nanoporous matrix.
Dependencies are inferred from the claim text.