Abstract

In general, unsaturated hydraulic conductivities are more difficult to estimate than are saturated, but as the soil transitions from intact to cracked, the difficulty in estimating the hydraulic conductivity and the water storage properties increases. One critical step in determination of unsaturated flow hydraulic properties lies in the evaluation of the Soil-Water Characteristic Curve (SWCC). In this paper, the authors' experience with a series of laboratory studies of direct measurements of cracked soil SWCCs is presented, including challenges associated with very low suction control. An oedometer-type SWCC apparatus, capable of suction and net normal stress control was used in these lab studies. This paper also addresses how the Air Entry Value (AEV) of the cracks can be calculated theoretically based on capillary theory, and the results are compared against AEVs determined from laboratory tests.

Original languageEnglish (US)
Title of host publicationUnsaturated Soils - Proceedings of the 5th International Conference on Unsaturated Soils
Pages409-415
Number of pages7
Volume1
StatePublished - 2011
Event5th International Conference on Unsaturated Soils - Barcelona, Spain
Duration: Sep 6 2010Sep 8 2010

Other

Other5th International Conference on Unsaturated Soils
CountrySpain
CityBarcelona
Period9/6/109/8/10

Fingerprint

soil water characteristic
suction
hydraulic conductivity
soil water
unsaturated hydraulic conductivity
unsaturated flow
hydraulic property
water storage
soil
crack
fluid mechanics
air
water
laboratory
evaluation
laboratory test
laboratory experimentation

ASJC Scopus subject areas

  • Soil Science

Cite this

Abbaszadeh, M. M., Houston, S., Zapata, C., Houston, W., Welfert, B., & Walsh, K. (2011). Laboratory determination of Soil-Water Characteristic Curves for cracked soil. In Unsaturated Soils - Proceedings of the 5th International Conference on Unsaturated Soils (Vol. 1, pp. 409-415)

Laboratory determination of Soil-Water Characteristic Curves for cracked soil. / Abbaszadeh, M. M.; Houston, Sandra; Zapata, Claudia; Houston, W.; Welfert, Bruno; Walsh, K.

Unsaturated Soils - Proceedings of the 5th International Conference on Unsaturated Soils. Vol. 1 2011. p. 409-415.

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

Abbaszadeh, MM, Houston, S, Zapata, C, Houston, W, Welfert, B & Walsh, K 2011, Laboratory determination of Soil-Water Characteristic Curves for cracked soil. in Unsaturated Soils - Proceedings of the 5th International Conference on Unsaturated Soils. vol. 1, pp. 409-415, 5th International Conference on Unsaturated Soils, Barcelona, Spain, 9/6/10.
Abbaszadeh MM, Houston S, Zapata C, Houston W, Welfert B, Walsh K. Laboratory determination of Soil-Water Characteristic Curves for cracked soil. In Unsaturated Soils - Proceedings of the 5th International Conference on Unsaturated Soils. Vol. 1. 2011. p. 409-415
Abbaszadeh, M. M. ; Houston, Sandra ; Zapata, Claudia ; Houston, W. ; Welfert, Bruno ; Walsh, K. / Laboratory determination of Soil-Water Characteristic Curves for cracked soil. Unsaturated Soils - Proceedings of the 5th International Conference on Unsaturated Soils. Vol. 1 2011. pp. 409-415
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