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Measuring Water Content and Density
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Book Chapter
Measuring Water Content and Density
2015
Overview
For measuring water content and density, this chapter discusses the sample collection method, and method without sample collection. The frying pan method of measuring water content is carried out on site. The oven‐dry method is carried out in a laboratory and is subject to a standard. Measuring dry density using a membrane densitometer is carried out in situ with a membrane densitometer or a sample of soil on a core taken from the soil. In both cases, a wet density is measured and then converted into a dry density. Methods that use the radioactive sources are y rays are provided by a radioactive source of radium, beryllium or cesium 137, and rays from fast neutrons. Measurements are taken from backscatter or surface transmission, from drilling, or between two boreholes. The device is calibrated beforehand for reference materials whose compactness or water content is known.
Publisher
John Wiley & Sons, Inc
Subject
ISBN
1848218494, 9781848218499
