Calibration of Whatman Grade 42 Filter Paper for Soil Suction Measurement

Kim, Hobi; Prezzi, Mônica; Salgado, Rodrigo

doi:10.1139/cjss-2016-0064

Cited by 18 publications

(15 citation statements)

References 6 publications

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“…Weighing was carried out within 20 seconds to avoid possible evaporation. Finally, suction was calculated from the computed filter paper water content using the calibration equations provided by [8]. Eqs.…”

Section: Matric Suction Sample Preparationmentioning

confidence: 99%

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Soil water characteristic curve of a compacted A-7-5 tropical red earth soil

Okovido¹,

Obroku²

2021

Nig. J. Tech.

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Soil water characteristic curve (SWCC) is a very important property of unsaturated soil and by extension tropical red earth soils. This is because several other important soils’ properties can be related to it. The Filter paper method was employed in the determination of the A-7-5(5) tropical red earth WCC. The gravimetric water content was utilized in the computation of the SWCC. Four models, Fredlund and Xing (1994), FX; Van Genuchten (1980), VG; Brooks and Corey (1964), BC; and Kosugi (1996), K were used to estimate the SWCCs of the soil and the minimum SSEnorm (MSSE), Average Relative Error (ARE), and R2 values were used to determine the most suitable model for predicting the SWCC. Results show that all four models can be used to predict A-7-5(5) WCC as they all had R2 value greater than 89% although BC and K models perform best with coefficient of determination of over 97%. MSSE and ARE% were also significantly low for BC and K models.

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Section: Matric Suction Sample Preparationmentioning

confidence: 99%

“…It was however noted that the proposed equations can only be used when the wetting testing procedure is followed (starting out with dry filter papers). The calibration curve is relevant when the filter paper water content value is greater than 6.5% [8].…”

Section: Matric Suction Sample Preparationmentioning

confidence: 99%

Soil water characteristic curve of a compacted A-7-5 tropical red earth soil

Okovido¹,

Obroku²

2021

Nig. J. Tech.

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“…The calibration curves can be separated into three groups: (1) below the ASTM calibration curve (Leong, He, and Rahardjo 2002;Elgabu 2013) ; (2) at the ASTM D5298-16 calibration curve (Fawcett and Collis-George 1967;Greacen, Walker, and Cook 1987;Deka et al 1995;Marinho and Oliveira 2006;Kim, Prezzi, and Salgado 2017); and (3) above the ASTM D5298-16 calibration curve (Hamblin 1981;Chandler, Crilly, and Montgomery-Smith 1992;Power, Vanapalli, and Garga 2008). A closer examination shows that the calibration curve of Power, Vanapalli, and Garga (2008) agrees with the calibration curves of Leong, He, and Rahardjo (2002) and Elgabu (2013) within the suction range from 10 to 100 kPa, and the calibration curve of Hamblin (1981) agrees with the calibration curves of ASTM D5298-16; Fawcett and Collis-George (1967); Greacen, Walker, and Cook (1987); Deka et al (1995); Marinho and Oliveira (2006); and Kim, Prezzi, and Salgado (2017) within the suction range from 1 to 10 kPa. The calibration curve of Hamblin (1981) is based on their data and the averaged data from Fawcett and Collis-George (1967).…”

Section: Introductionmentioning

confidence: 99%

“…The Greacen, Walker, and Cook (1987) calibration curve based on their own data was not adopted by ASTM D5298-16. The Kim, Prezzi, and Salgado (2017) calibration curve is based on the reinterpretation of the data from Fawcett and Collis-George (1967) and Graecen et al (1987).…”

Section: Introductionmentioning

confidence: 99%

Examining the Contact Filter Paper Method in the Low Suction Range

et al. 2020

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The filter paper method for measuring suction is standardized in ASTM D5298-16, Standard Test Method for the Measurement of Soil Potential (Suction) Using Filter Paper. The contact filter paper is usually calibrated using a pressure plate apparatus from 10 to 1,500 kPa.The filter paper calibration curve is commonly plotted on a log-log or semilog graph with water content as the abscissa and suction as the ordinate. To evaluate the accuracy of the filter paper calibration curve in the low suction range (<10 kPa), the Whatman No. 42 filter paper is assessed using the capillary-rise method for suction range from 0.1 to 1.6 kPa and using the Tempe cell for suction range from 3 to 7 kPa. The test results from the capillary-rise method and Tempe cell tests show different trends. The difference in trends is attributed to the limitation of the axis-translation technique used in the Tempe cell test, which is not applicable at a high degree of saturation. The capillary-rise method shows that the Whatman No. 42 filter paper has a maximum water content of about 135 % and minimum measurable suction of about 1 kPa. The water content of the filter paper at 1 kPa suction can be used to supplement the other method for suctions greater than 10 kPa to give the calibration curve of the Whatman No. 42 filter paper.

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“…[2013], Leong et al [2016] and Kim et al [2016], whereas for peat soils, the proposal for the calibration equation was presented by Griffith et al [1991]. These are usually equations describing two straight lines, developed for a range of low and high suction pressures.…”

Section: Introductionmentioning

confidence: 99%

Determination of water retention characteristics of organic soils, using the indirect filter-paper method

Oleszczuk¹,

Zając²,

Hewelke³

et al. 2018

ASP.FC

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The paper describes the filter-paper method as an indirect method for the estimation of the pF characteristics. In this method, no direct measurements of soil water potential (pF) are performed, but the latter is determined on the basis of the gravimetric moisture content of the filter paper, which is in contact with the analysed soil samples. Therefore, there is a need to establish a calibration equation that would express the relationship between the value of the soil water potential (pF) and the gravimetric moisture content of the filter paper. The calibration procedure was performed using standard measurement methods of determining pF curves (sand box, pressure plates) and filter paper (Whatman no 42). Based on the research conducted, calibration curves were developed for the filter-paper method, for the analysed sapric (drainic) histosoles, developed from moss and alder peats of medium (hemic) and strong (sapric) degree of decomposition, originating from the mid-basin of the Biebrza river. The proposed calibration curves were presented as 3-degree polynomial equations. The aforementioned equations can be used for the estimation of retention characteristic for sapric (drainic) histosoles, showing similar properties and comparable degree of secondary decomposition of the peat mass.

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Calibration of Whatman Grade 42 Filter Paper for Soil Suction Measurement

Cited by 18 publications

References 6 publications

Soil water characteristic curve of a compacted A-7-5 tropical red earth soil

Soil water characteristic curve of a compacted A-7-5 tropical red earth soil

Examining the Contact Filter Paper Method in the Low Suction Range

Determination of water retention characteristics of organic soils, using the indirect filter-paper method

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