Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Mechanical measurement system
Reexamination Certificate
2007-10-30
2007-10-30
Wachsman, Hal (Department: 2857)
Data processing: measuring, calibrating, or testing
Measurement system in a specific environment
Mechanical measurement system
C702S053000, C702S138000, C702S189000
Reexamination Certificate
active
11067867
ABSTRACT:
Methods and apparatus using time domain reflectometry to determine electrical properties of concrete for calculating physical and mechanical properties of the concrete that are indicative of concrete quality and durability. The dielectric constant of a concrete is determined to calculate the gravimetric water content of the concrete for use in finding the water-cement ratio of the concrete. Electrical conductivity of curing concrete is determined to calculate compressive strength of the concrete for use in predicting strength development in the concrete.
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Drnevich Vincent P.
Yu Xiong
Bahret William F.
Desta Elias
Pressley P. Derek
Purdue Research Foundation
Wachsman Hal
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