Filter Paper Method for the Determination of the Soil Water Retention Curve

Almeida, Eurileny Lucas de; Teixeira, Adunias dos Santos; Filho, Francisco Chagas da Silva; Júnior, Raimundo Nonato de Assis; Leão, Raimundo Alípio de Oliveira

doi:10.1590/01000683rbcs20140546

Cited by 9 publications

(3 citation statements)

References 11 publications

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“…All samples were given a specific water content by adding water to the samples. The filter paper method was executed on the samples as described by Almeida et al [7]. After 7 days an equilibrium has been set between the soil and the filter paper.…”

Section: 𝐷 = 𝑀 𝑠 (𝑜𝑑) 𝑉 𝑠mentioning

confidence: 99%

Differences in soil-water characteristics of monoculture oil-palm plantations, agroforestry oil-palm plantations and natural forest

van Oosterhout,

Marhaento,

Booij

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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This study aims to determine the soil water retention curves and infiltration rates for three different land use types located in Jambi province, Sumatra, Indonesia: natural forest, monoculture and agroforestry oil palm plantations (divided into new agroforestry (2,5 years) and old agroforestry (over 10 years)). Data on the infiltration rate of the soil for the different land use types was collected by using a double infiltrometer. A Horton curve was fitted to these measurements. The results on the soil water characteristics were compared between all land use types. This concluded that there is a significant difference in constant infiltration rate between the value of the natural forest and the new agroforestry and the value of the other land use types. The forest also has a significant smaller porosity. The results of the study concluded that plantations have a bad influence on the soil characteristics investigated, but in general agroforestry has a less bad impact than monoculture. However, this is highly dependent on the features of the locations investigated.

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Section: 𝐷 = 𝑀 𝑠 (𝑜𝑑) 𝑉 𝑠mentioning

confidence: 99%

Differences in soil-water characteristics of monoculture oil-palm plantations, agroforestry oil-palm plantations and natural forest

van Oosterhout,

Marhaento,

Booij

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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“…The principle of the filter paper test method is based on the moisture uptake by filter paper until there is a balance in potential between the filter paper and the soil [12]. The technique involved the use of filter papers in direct contact with the specimens, prepared according to Section 2.1 until suction equilibrium was attained.…”

Section: Measurement Of Soil Potential Using Filter Papermentioning

confidence: 99%

Experimental study to evaluate soil water retention curve of HYPER clay geosynthetic clay liner

Khan

Camillis

Emidio

et al. 2022

IOP Conf. Ser.: Mater. Sci. Eng.

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Geosynthetic clay liners are widely used as hydraulic barrier due to their low hydraulic conductivity but bentonite in the liners loses its effectiveness due to significant thermal fluxes by both diurnal and seasonal heating and cooling cycles. Modified sodium carboxy methyl cellulose-based bentonite clay (HYPER clay) has shown better hydraulic performance in both situations. A possible reason for this improved performance of HYPER clay based geosynthetic clay liner is the improvement in the suction under changing thermal conditions. Thus, the relationship between soil suction and moisture content, also called the soil water retention curve, needs to be estimated. Therefore, we investigated the soil-water retention curve of the HYPER clay based geosynthetic clay liner and compared it with the untreated clay based geosynthetic clay liner. The article presents the suction test results on wetting path conducted on geosynthetic clay liner prototypes containing HYPER and untreated clay assessed by the contact filter paper method and the relative humidity sensor. The results showed that the geosynthetic clay liner containing HYPER clay has a high volumetric water content and thus, high water retention compared to untreated bentonite at a given suction value. In other words, the HYPER clay can be considered as a potential alternative to conventional bentonite due to its improved water retention capacity.

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“…For this test, we use the filter paper method which is commonly used in geotechnical engineering to determine soil suction [10,11,12]. It was accepted as a standard method for soil suction measurement by the American Society for Testing Material (ASTM) standard ASTM D5298 in 2003 [10].…”

Section: Laboratory Studiesmentioning

confidence: 99%

Behavior of unsaturated pelitic soil in a railway context

2020

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As part of the rehabilitation work on the Gabonese railway line, the Trans-Gabon Railway, it was necessary to analyse the behaviour of the materials constituting the subgrade soil. These soils are pelitic soils whose behaviour under unsaturated conditions and cyclic loading has not been studied before and which present differential settlements and lack of bearing capacity. In this article, we focus on the characterization of the subgrade soil. The objective of this work is first to determine the in-situ characteristics of the pelitic soil and be able to link these characteristics with the behaviour studied in laboratory. For that purpose, we propose an in-situ investigation based on the use of light dynamic penetrometric tests in order to assess the variability of the subgrade layer and a drying-wetting test to assess the influence of hydric stress on the drainage path of the studied soil. We present the results of in-situ tests performed on a study area. We also present the results of the tests to determine the soil water characteristic curves (SWCC) and the curves describing the volumetric behaviour of this soil when exposed to drying.

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Filter Paper Method for the Determination of the Soil Water Retention Curve

Cited by 9 publications

References 11 publications

Differences in soil-water characteristics of monoculture oil-palm plantations, agroforestry oil-palm plantations and natural forest

Differences in soil-water characteristics of monoculture oil-palm plantations, agroforestry oil-palm plantations and natural forest

Experimental study to evaluate soil water retention curve of HYPER clay geosynthetic clay liner

Behavior of unsaturated pelitic soil in a railway context

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