Clay Characterization & Water Vapor Sorption–Moving Beyond Atterberg Limits
Webinar - April 14, 2016

Clay Characterization & Water Vapor Sorption–Moving Beyond Atterberg Limits



Dr. Bill Likos, Professor in the Department of Civil and Environmental Engineering and Chair of the Geological Engineering Program at University of Wisconsin, has been mining the high resolution isotherms generated by METER’s Vapor Sorption Analyzer (VSA) to revolutionize clay soil characterization. In this webinar, he will show why vapor sorption is superior to conventional methods for quantifying clay properties.

Topics covered:

  • Fundamentals of mineral-water interactions
  • Techniques for measuring water vapor sorption isotherms
  • Connections between sorption isotherms and clay properties
  • Characterizing specific surface area and cation exchange capacity

This webinar summarizes recent research related to geotechnical characterization of clays and clayey soils using measurements of water vapor sorption behavior. Dr. Likos evaluates testing equipment for determining water vapor sorption isotherms.  He also illustrates applications of sorption measurements toward understanding interlayer swelling behavior, classifying expansive clays, and estimating fundamental surface properties such as specific surface area (SSA) and cation exchange capacity (CEC). Dr. Likos advocates sorption-based soil characterization as an alternative to conventional clay characterization approaches commonly used in geotechnical engineering practice such as Atterberg limits. Sorption-based clay characterization is more firmly rooted in fundamental clay compositional properties and relies on measurement techniques that are potentially more systematic, economical, and readily automated.

Automatic soil water characteristic curves in the very dry region

Click and read’ efficiency makes it easier to draw accurate conclusions about your soil’s behavior, its expansibility, and its performance as an engineering material.

Superior saturated hydraulic conductivity

Full integration. Simple automation. Improved accuracy. The KSAT checks off all the boxes you care about when it comes to measuring saturated hydraulic conductivity in a compact instrument …