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Conference Paper: Effect of particle size on the measurement of the apparent contact angle in sand of varying wettability under air-dried conditions

TitleEffect of particle size on the measurement of the apparent contact angle in sand of varying wettability under air-dried conditions
Authors
Issue Date2016
PublisherEDP Sciences. The Journal's web site is located at http://www.e3s-conferences.org/
Citation
3rd European Conference on Unsaturated Soils (E-UNSAT 2016): Frontiers in Unsaturated Soils, Paris, France, 12-14 September 2016. In E3S Web of Conferences, 2016, v. 9, article no. 09003 How to Cite?
AbstractChanges in the wettability of soil are known to affect several processes such as infiltration and the shear strength of soil. In this study, the wettability of a medium to fine sand was chemically modified by using different concentrations of dimethyldichlorosilane (DMDCS). The sessile drop method (SDM) was used for the assessment of wettability of hydrophobised Leighton Buzzard Sand (LBS). The results demonstrate that beyond a concentration of 2 g per kg of LBS, the finer fraction had its apparent contact angle (ACA) increased up to 115° while the maximum ACA attained by the coarser fractions was 100°. At such high concentration of DMDCS, the effect of trapped air, which is known to increase the ACA, was found to be either small or insignificant. The standard deviations of the ACAs agreed well with past studies. The most important factors contributing to the water-repellent behaviour of chemically synthesised sand were attributed to the characteristics of the particles; these include surface area and particle shape.
DescriptionSession: Advances in Experimental Methods: Mechanical Properties
Persistent Identifierhttp://hdl.handle.net/10722/245771
ISSN
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorSaulick, Y-
dc.contributor.authorNunes Lourenco, SD-
dc.contributor.authorBaudet, BA-
dc.contributor.authorDelage, P-
dc.contributor.authorCui, Y-J-
dc.contributor.authorGhabezloo, S-
dc.contributor.authorPereira, J-M-
dc.contributor.authorTang, A-M-
dc.date.accessioned2017-09-18T02:16:35Z-
dc.date.available2017-09-18T02:16:35Z-
dc.date.issued2016-
dc.identifier.citation3rd European Conference on Unsaturated Soils (E-UNSAT 2016): Frontiers in Unsaturated Soils, Paris, France, 12-14 September 2016. In E3S Web of Conferences, 2016, v. 9, article no. 09003-
dc.identifier.issn2267-1242-
dc.identifier.urihttp://hdl.handle.net/10722/245771-
dc.descriptionSession: Advances in Experimental Methods: Mechanical Properties-
dc.description.abstractChanges in the wettability of soil are known to affect several processes such as infiltration and the shear strength of soil. In this study, the wettability of a medium to fine sand was chemically modified by using different concentrations of dimethyldichlorosilane (DMDCS). The sessile drop method (SDM) was used for the assessment of wettability of hydrophobised Leighton Buzzard Sand (LBS). The results demonstrate that beyond a concentration of 2 g per kg of LBS, the finer fraction had its apparent contact angle (ACA) increased up to 115° while the maximum ACA attained by the coarser fractions was 100°. At such high concentration of DMDCS, the effect of trapped air, which is known to increase the ACA, was found to be either small or insignificant. The standard deviations of the ACAs agreed well with past studies. The most important factors contributing to the water-repellent behaviour of chemically synthesised sand were attributed to the characteristics of the particles; these include surface area and particle shape.-
dc.languageeng-
dc.publisherEDP Sciences. The Journal's web site is located at http://www.e3s-conferences.org/-
dc.relation.ispartofE3S Web of Conferences-
dc.rightsThe original publication is available at http://www.e3s-conferences.org/-
dc.rightsThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.-
dc.titleEffect of particle size on the measurement of the apparent contact angle in sand of varying wettability under air-dried conditions-
dc.typeConference_Paper-
dc.identifier.emailNunes Lourenco, SD: lourenco@hku.hk-
dc.identifier.emailBaudet, BA: baudet@hku.hk-
dc.identifier.authorityNunes Lourenco, SD=rp01872-
dc.identifier.authorityBaudet, BA=rp01303-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1051/e3sconf/20160909003-
dc.identifier.scopuseid_2-s2.0-85013649729-
dc.identifier.hkuros276365-
dc.identifier.volume9-
dc.identifier.spagearticle no. 09003-
dc.identifier.epagearticle no. 09003-
dc.identifier.isiWOS:000387533300057-
dc.publisher.placeFrance-

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