Patent ID: 8011248
Filing Date: 2011-09-06
Classification: G01N,H05K

Abstract:
1. A material property gauge for determining a property of construction material, the material property gauge comprising: an electromagnetic field generator configured to generate an electromagnetic field including two or more frequencies between a radio frequency (RF) range and a microwave frequency range and for penetrating into a hydrated, heterogeneous construction material; an electromagnetic sensor operable to measure a response of the construction material to the electromagnetic field and operable to produce a signal representing the measured electromagnetic response by the construction material to the electromagnetic field; a calibration function configured to obtain a calibration curve for the construction material based on one or more of a moisture content, a density, and a modulus of the construction material; and a material property calculation function configured to calculate a material property value associated with the construction material based upon the signal produced by the electromagnetic sensor, wherein calculating the material property value includes using the electromagnetic response to determine a moisture content and a density of the construction material.