Rubber Latex Encasement of Undisturbed Cores for Water Flow and Potential Measurements
- M. D. Tomer and
- A. H. Ferguson
A method of collection of minimally disturbed soil cores for use in laboratory studies is described. Cores were obtained with a standard soil sampling tube. The cores were then centered in a larger diameter PVC tube and covered with a liquid rubber latex molding compound that dries to a form fitting layer around the sample. The latex was covered with a thin layer of wax to prevent evaporation and the space between the covered core and the PVC was filled with a light weight concrete made of vermiculite and cement. These cores can be easily handled and cut to desired length with a table saw. Water flow and desorption data from cores are presented. Saturated conductivities of core samples (Ks) are compared to estimates of maximum field conductivity (Km) based on unit gradient approaches to flood plot drainage data. The geometric mean of Ks values gave a conservative estimate as compared to most Km values.Please view the pdf by using the Full Text (PDF) link under 'View' to the left.
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