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Effect of the filter paper calibration on the soil-water retention curve of an ...
Bicalho, Kátia Vanessa; Marinho, Fernando A. M.; Correia, A. Gomes; Ferreira, Sandra Reis; Fleureau, Jean-MarieThe soil suction is a key variable in the analysis of the hydro-mechanical behavior of unsaturated soils. The filter paper method (FPM) calculates soil suction indirectly by measuring the gravimetric water content of the filter paper at equilibrium that is related to soil suction through a predetermined calibration curve. The matric suctions inferred from FPM depend on the calibration between the water content ...
Filter paper method of soil suction measurement
Bicalho, Kátia Vanessa; Correia, A. Gomes; Ferreira, Sandra Reis; Fleureau, Jean-Marie; Marinho, Fernando A. M.The capillary pressure of the soil (i.e., the pressure difference between air and water components in soil voids) is a key variable in the analysis of the hydro-mechanical behavior of unsaturated soils. Therefore a simple and economical laboratory method for the measurement of the capillary pressure of the soil (also known as soil matric suction, the reference being the atmospheric pressure), even if a degree o...
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