VALIDATION OF NUCLEAR GAUGE DENSITY-METER READINGS AGAINST SAND REPLACEMENT METHOD

This paper presents wet density and moisture content comparative test results of surface nuclear gauge density-meter against sand replacement method. The test results were obtained by carrying out field density parallel testing, whereby the density and moisture readings were determined first using a nuclear gauge density-meter followed by the sand replacement method. The use of “multiple shift coefficients” developed from a linear regression model as a means of adjusting and calibrating the nuclear gauge density-meter readings against sand replacement test results is propose