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ASTM D5298

2016 Edition, November 15, 2016

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Standard Test Method for Measurement of Soil Potential (Suction) Using Filter Paper



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Product Details:

  • Revision: 2016 Edition, November 15, 2016
  • Published Date: November 15, 2016
  • Status: Active, Most Current
  • Document Language: English
  • Published By: ASTM International (ASTM)
  • Page Count: 6
  • ANSI Approved: No
  • DoD Adopted: No

Description / Abstract:

This test method covers laboratory filter papers as passive sensors to evaluate the soil matric and total potential (suction), a measure of the free energy of the pore-water or tension stress exerted on the pore-water by the soil matrix (1, 2).2 The term potential or suction is descriptive of the energy status of soil water.

This test method controls the variables for measurement of the water content of filter paper that is in direct contact with soil or in equilibrium with the partial pressure of water vapor in the air of an airtight container enclosing a soil specimen. The filter paper is enclosed with a soil specimen in the airtight container until moisture equilibrium is established; that is, the partial pressure of water vapor in the air is in equilibrium with the vapor pressure of pore-water in the soil specimen.

This test method provides a procedure for calibrating different types of filter paper for use in evaluating soil matric and total potential.

Units—The values stated in SI units are to be regarded as standard. The inch-pound units given in parentheses are mathematical conversions, which are provided for information purposes only and are not considered standard.

This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use

2 The boldface numbers in parentheses refer to a list of references at the end of this standard