ANALYSIS OF POROUS MATERIAL USING LABORATORY CALIBRATED TEST APPARATUS AND SAMPLE DATA

摘要

Test apparatus for testing porous material such as used inroadway base or building foundations may be deployed in the field at varioustestsites. The test apparatus includes electrodes that contact the porous materialunder test and a sensor unit that supplies electromagnetic signals to theporousmaterial. Response signals reveal electrical parameters such as compleximpedancewhich can be equated to material properties such as density and moisturecontent. Reference may be made to empirical correlations made in laboratorytestsusing the same test apparatus to enable the effects of the test apparatus onthemeasurement to be accounted for. The electrodes may include flexible coplanarelectrodes that reduce air gaps when in contact with the porous material.