›› 2002, Vol. 23 ›› Issue (6): 800-802.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Suction calibration for filter paper

CHENG Jin-ru1, SHEN Zhen-yao1, LI Man-xi2   

  1. 1. China Institute for Radiation Protection, Taiyuan 030006, China; 2. Taiyuan Institute of Geological Engineering Reconnaissance, Taiyuan 030031, China
  • Received:2001-10-22 Online:2002-12-10 Published:2016-09-04

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Abstract: The method being used to measure the suction of unsaturated soil is based on the calibration of the suction of filter paper. This method was studied in China and abroad, but for homemade quantitative filter papers the calibration curves can just be used to lower suction. Based on the previous works we have made the calibration of filter paper suction at the higher suction. The calibration curves for the filter papers made in China or abroad are almost the same, which consists of two sections, one with larger slope and the other with smaller slope. We also found that the equation developed by van Genuchten is better to fit the calibration curve.

Key words: filter paper, suction, calibration

CLC Number: 

  • TB 322
  • Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.
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