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Apr 26, 2012

The Role of Micro-Scale Properties in the Study of Expansive Soils

Publication: Geo-Frontiers 2011: Advances in Geotechnical Engineering

Abstract

A comprehensive study of expansive soil behavior includes understanding the surface phenomena of clay particles or aggregates within the soil matrix. This research focuses on six micro-scale properties of four natural expansive soils including matric suction at OMC, specific surface area (SSA), cation exchange capacity (CEC), pH, surface conductance and mineralogy, in order to better understand the microscopic behavior of expansive soils. An approach to approximate surface conductance is proposed. The role of each micro-scale property in the assessment of macroscopic expansive soil behavior as swell potential is discussed. Among these six properties, matric suction at OMC is found to be the most accurate predictor of soil swelling given that the soil samples under tests were also compacted at OMC.

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Go to Geo-Frontiers 2011
Geo-Frontiers 2011: Advances in Geotechnical Engineering
Pages: 4129 - 4136

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Published online: Apr 26, 2012

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S.M.ASCE
Graduate Research Assistant, University of Oklahoma, 202 W. Boyd Street, Room 334, Norman, OK, 73019.E-mail: [email protected]
A. B. Cerato, Ph.D. [email protected]
P.E.
M.ASCE
Assistant Professor, University of Oklahoma, 202 W. Boyd Street, Room 334, Norman, OK, 73019.E-mail: [email protected]

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