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

摘要

A method for determining the density and moisture content of porous construction material that is used in the civil construction industry such as aggregate, soil aggregate, type I or II base, or native soil materials that are suitable for shallow foundations. In a first part of the method, porous construction material undergoes physical and electrical testing in the geotechnical laboratory to empirically derive correlations between the electrical and physical properties. In a second part compacted construction material is tested in-situ by deploying field testing apparatus and methods to measure the electrical properties of the porous construction material. The field equipment utilizes the established relationship of the electrical and physical characteristics to calculate the porous construction material density and moisture content. Also disclosed are tools for performing soil tests in trenches, e.g. for pipelines, where the moisture and density of the compacted bedding and backfill materials needs to be tested.