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Title: Measurement of soil suction using moist filter paper
Authors: Leong, Eng-Choon
Kizza, Richard
Rahardjo, Harianto
Keywords: Soil Suction
Moist Filter Paper
Engineering::Civil engineering
Issue Date: 2016
Source: Leong, E.-C., Kizza, R., & Rahardjo, H. (2016). Measurement of soil suction using moist filter paper. E3S Web of Conferences, 9, 10012-. doi:10.1051/e3sconf/20160910012
Series/Report no.: E3S Web of Conferences
Abstract: Measurement of soil suction is important as soil suction is one of the two stress-state variables that control both the hydro and mechanical behaviour of unsaturated soils. One of the soil suction measurement techniques is the filter paper method. Even though the filter paper technique has been standardized, the experimental procedure can still be improved in order to reduce the inconsistencies that are often reported with the filter paper technique. This paper explores usage of both initially dry and initially moist Whatman No. 42 filter paper for matric and total suction measurements. Residual soils from the Bukit Timah Granite in Singapore were compacted at various water contents from dry to wet of optimum using standard Proctor energies and their suctions were measured using both contact and non-contact filter papers. Results of the suction measurements showed hysteresis between the initially dry and the initially moist filter papers for both the contact and non-contact methods. Suction measurement by the contact filter paper method is more consistent than suction measurement by the non-contact filter paper method. Condensation causes the non-contact filter papers to have higher water contents. The results showed that the non-contact initially dry filter paper follows the total suction curve but the non-contact initially moist filter paper may follow the matric suction curve instead.
DOI: 10.1051/e3sconf/20160910012
Rights: © 2016 The Author(s) (published by EDP Sciences). This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:CEE Journal Articles

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