| 摘要 |
<p>A method and apparatus for measuring in-place soil density and moisture content. A cylindrical cell is disclosed which may be used to measure the density and the dielectric constant of a soil sample placed within the cylindrical cell. Also disclosed is a multiple rod probe (70) which is designed to contact spikes (72) driven into the ground (74) to measure the in-place dielectric constant of soil. The multiple rod probe includes adjustable studs (82) which ensure complete contact with the spikes. Both measurements are performed using time domain reflectometry. The present invention develops equations for determining the density of the soil in-place from the measured dielectric constant of the soil in-place and the measured density and dielectric constant of the soil in the cylindrical cell.</p> |
