Rao, SM and Rekapalli, M (2020) Soil water content-water activity relations of structured kaolinitic specimens from GAB equation. In: Geotechnique, 70 (10). pp. 863-866.
PDF
geo_70-10_863-866_2020.pdf - Published Version Restricted to Registered users only Download (114kB) | Request a copy |
Abstract
The GAB (Guggenheim-Anderson-de Boer) equation is explored to describe the relation between equilibrium soil water content (wequil) and water activity (relative humidity) of structured kaolinitic soils along the drying path. The equation is chosen as it has the advantage of a theoretical basis and can describe sorption behaviour of soils over a wide range of water activities. The GAB parameters evaluated from desorption experiments with de-structured specimens were successful in predicting the equilibrium water contents of structured kaolinitic specimens along the drying path. Insight into the influence of water activity on moisture desorption from structured soil specimens is obtained from energy requirements to desorb water molecules and by estimating the relative affinity (distribution constant) of water molecules for retention in soil pores or to undergo desorption. © 2019
Item Type: | Journal Article |
---|---|
Publication: | Geotechnique |
Publisher: | ICE Publishing |
Additional Information: | The copyright of this article belongs to ICE Publishing |
Keywords: | Desorption; Molecules; Soil moisture, Distribution constant; Energy requirements; Equilibrium water contents; Influence of water; Kaolinitic soils; Moisture desorption; Soil water content; Structured soil, Soil pollution, desorption; equation; kaolinite; porosity; relative humidity; residual soil; retention; soil water; sorption; suction; water content |
Department/Centre: | Division of Mechanical Sciences > Civil Engineering |
Date Deposited: | 28 Jan 2021 05:33 |
Last Modified: | 28 Jan 2021 05:33 |
URI: | http://eprints.iisc.ac.in/id/eprint/67377 |
Actions (login required)
View Item |