Chapter
Jun 20, 2018
The Active Zone: Unsaturated Soil Volume Change Due to Normal Cycles and Anomalies at Depth
Authors: John T. Bryant, Ph.D., M.ASCE [email protected], Hayden Fischer, M.ASCE [email protected], M. Kabir Hossain, Ph.D., M.ASCE [email protected], and Jeong Yeon Cheon, Ph.D., M.ASCE [email protected]Author Affiliations
Publication: PanAm Unsaturated Soils 2017
Abstract
The active zone (AZ) constitutes the depth below the ground where soil movements can occur due to moisture/energy changes in unsaturated soils. The upper seasonal zone is affected by changes in moisture contents at the edges of foundation systems which can cause cyclical upward and downward movements as a function of the direction of moisture flux due primarily to climate. Another phenomenon creating soil expansion is the process of moisture equilibration after the construction of the foundation or pavement system at the surface. This equilibration phenomenon can affect soils in the upper seasonal zone as well as in the deeper zone of desiccation.
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PanAm Unsaturated Soils 2017
Pages: 246 - 256
Copyright
© 2018 American Society of Civil Engineers.
History
Published online: Jun 20, 2018
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Affiliations
P.E., P.G.
President/CEO, Bryant Consultants, Inc., 3360 Wiley Post Rd., Carrollton, TX 75006. E-mail: [email protected]
P.E.
Director of Forensic Engineering, Bryant Consultants, Inc., 3360 Wiley Post Rd., Carrollton, TX 75006. E-mail: [email protected]
P.E., C.Eng
Director of Geotechnical Engineering, Bryant Consultants, Inc., 3360 Wiley Post Rd., Carrollton, TX 75006. E-mail: [email protected]
P.E.
Senior Geotechnical Engineer, Bryant Consultants, Inc., 3360 Wiley Post Rd., Carrollton, TX 75006. E-mail: [email protected]
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