Characterisation, mechanical and microstructural behaviour of an unsaturated silt

G. McCloskey, M. Sanchez, E. Romero

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

Abstract

This study investigates an unsaturated silt sampled from an embankment along the Begawan Solo River in East Java, Indonesia. Load and soak pedometer tests were carried out on laboratory compacted samples and on undisturbed samples. For samples compacted dry of optimum at low dry densities, significant settlements were observed on wetting, with a maximum collapse potential of 14% evaluated. A qualitative investigation of the microstructure of the material was carried out using an Environmental Scanning Electron Microscope. Micrographs were taken of the material under the following conditions: (a) Compacted, (b) Compacted, Loaded, (c) Compacted, Loaded & Soaked, and (d) Undisturbed. The ESEM images suggest that the fabric of the Undisturbed sample and the Compacted, Loaded & Soaked sample are similar. These results appear to indicate that the undisturbed material sampled at the end of the wet season has already undergone the process of plastic collapse compression in-situ.
LanguageEnglish
Title of host publicationUnsaturated Soils
Subtitle of host publicationExperimental Studies in Unsaturated Soils and Expansive Soils
EditorsO. Buzzi, S. Fityus, D. Sheng
Place of PublicationBoca Raton
Pages51-56
Number of pages6
Volume1
Publication statusPublished - 2 Nov 2009
EventFourth Asia-Pacific Conference on Unsaturated Soils - Newcastle, Australia
Duration: 23 Nov 200925 Nov 2009

Conference

ConferenceFourth Asia-Pacific Conference on Unsaturated Soils
CountryAustralia
CityNewcastle
Period23/11/0925/11/09

Fingerprint

silt
dry density
embankment
wetting
wet season
microstructure
plastic
compression
electron
river
material
laboratory
in situ
fabric
test

Keywords

  • unsaturated silt
  • unsaturated soils
  • expansive soils

Cite this

McCloskey, G., Sanchez, M., & Romero, E. (2009). Characterisation, mechanical and microstructural behaviour of an unsaturated silt. In O. Buzzi, S. Fityus, & D. Sheng (Eds.), Unsaturated Soils: Experimental Studies in Unsaturated Soils and Expansive Soils (Vol. 1, pp. 51-56). Boca Raton.
McCloskey, G. ; Sanchez, M. ; Romero, E. / Characterisation, mechanical and microstructural behaviour of an unsaturated silt. Unsaturated Soils: Experimental Studies in Unsaturated Soils and Expansive Soils. editor / O. Buzzi ; S. Fityus ; D. Sheng. Vol. 1 Boca Raton, 2009. pp. 51-56
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McCloskey, G, Sanchez, M & Romero, E 2009, Characterisation, mechanical and microstructural behaviour of an unsaturated silt. in O Buzzi, S Fityus & D Sheng (eds), Unsaturated Soils: Experimental Studies in Unsaturated Soils and Expansive Soils. vol. 1, Boca Raton, pp. 51-56, Fourth Asia-Pacific Conference on Unsaturated Soils, Newcastle, Australia, 23/11/09.

Characterisation, mechanical and microstructural behaviour of an unsaturated silt. / McCloskey, G.; Sanchez, M.; Romero, E.

Unsaturated Soils: Experimental Studies in Unsaturated Soils and Expansive Soils. ed. / O. Buzzi; S. Fityus; D. Sheng. Vol. 1 Boca Raton, 2009. p. 51-56.

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

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N2 - This study investigates an unsaturated silt sampled from an embankment along the Begawan Solo River in East Java, Indonesia. Load and soak pedometer tests were carried out on laboratory compacted samples and on undisturbed samples. For samples compacted dry of optimum at low dry densities, significant settlements were observed on wetting, with a maximum collapse potential of 14% evaluated. A qualitative investigation of the microstructure of the material was carried out using an Environmental Scanning Electron Microscope. Micrographs were taken of the material under the following conditions: (a) Compacted, (b) Compacted, Loaded, (c) Compacted, Loaded & Soaked, and (d) Undisturbed. The ESEM images suggest that the fabric of the Undisturbed sample and the Compacted, Loaded & Soaked sample are similar. These results appear to indicate that the undisturbed material sampled at the end of the wet season has already undergone the process of plastic collapse compression in-situ.

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McCloskey G, Sanchez M, Romero E. Characterisation, mechanical and microstructural behaviour of an unsaturated silt. In Buzzi O, Fityus S, Sheng D, editors, Unsaturated Soils: Experimental Studies in Unsaturated Soils and Expansive Soils. Vol. 1. Boca Raton. 2009. p. 51-56