AASHTO TP 112-14 (2018)


Standard Method of Test for Determining In-Place Density and Moisture Content of Soil and Soil-Aggregate Using Complex Impedance Methodology
standard by American Association of State and Highway Transportation Officials, 2014

PDF FormatPDF FormatMulti-User AccessMulti-User AccessPrintablePrintableBookmarksBookmarks


This practice describes the procedures for determining the density and moisture content of soil and soil-aggregate using a Complex Impedance Measuring Instrument (CIMI). This practice describes three different electrode configurations to determine the density and moisture content. One tool utilizes soil penetrating probes and two additional tools are nonpenetrating surface electrodes. The CIMI measures the electrical properties of the soil being tested and correlates the electrical properties to the physical properties during a soil calibration procedure. The soil electrical properties are typically unique for the soil material. During the soil calibration procedure a set of algorithms relates the electrical and physical properties of the soil using linear regressions. The subsequent electrical testing of the soil utilizes the established relationship of the electrical and physical characteristics to calculate the soil density and moisture content.

Product Details

Number of Pages:
File Size:
1 file , 1.3 MB
Product Code(s):
TP112-14-UL, TP112-14-UL, TP112-14-UL
This product is unavailable in Ukraine, Russia, Belarus