Abstract
Soil strength, type, and moisture content are needed to properly assess the load carrying capacity of soil under traffic from ground vehicles and aircraft. Currently, portable, automatic, easy-to-use field methods do not exist to measure the required soil parameters. In this paper, we describe a novel extension of proven cone penetrometer technology under development that allows measurement of soil strength, moisture content, and soil classification. The technology automates and adds sensing capability to the standard dynamic cone penetrometer (DCP) configuration specified in ASTM D6951. The sensing approach combines cone resistance and sleeve friction with additional sensing technologies. A manually controlled prototype system is undergoing testing at Northeastern University. Preliminary results indicate that the required soil geotechnical parameters can be extracted from dynamic penetration data, providing for the first time a comprehensive near surface field soil characterization capability.
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