Experimental study of water infiltration on an unsaturated soil-geosynthetic system

Edwin Fabián García-Aristizábal; Carlos Alberto Vega-Posada; Alba Nury Gallego-Hernández

doi:10.17533/udea.redin.n78a15

Authors

Edwin Fabián García-Aristizábal University of Antioquia https://orcid.org/0000-0002-4837-8518
Carlos Alberto Vega-Posada University of Antioquia https://orcid.org/0000-0002-4837-8518
Alba Nury Gallego-Hernández University of Antioquia https://orcid.org/0000-0002-4742-7007

DOI:

https://doi.org/10.17533/udea.redin.n78a15

Keywords:

soil-geosynthetic, column-test, unsaturated soil, experimental study, infiltration

Abstract

This investigation presents experimental results from soil-geosynthetic column tests constructed to study the drainage capability of geosynthetics installed within an unsaturated soil and subjected to a water infiltration process. Two different types of permeable geosynthetics were tested; namely, non-woven geotextile and woven non-woven geocomposite. The infiltration process was monitored using negative/positive pore water pressure and volumetric water content transducers placed above and below the geosynthetic. The results showed that the geosynthetics behaved as an impermeable layer until the surrounding soil was nearly saturated. The geosynthetics started draining water laterally only when the pore water pressure within the soil above it was positive or negative but close to zero. This study intends to provide some insights into the physics of soil-geosynthetics performance, and to complement the available technical data used to conduct numerical simulations of complex soil-structures subjected to water infiltration processes.

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Author Biographies

Edwin Fabián García-Aristizábal, University of Antioquia

Civil Engineer, National University of Colombia. Master of Engineering, University of Tokyo. Doctor of Engineering, Kyoto University. Associate Professor, Faculty of Engineering, University of Antioquia.

Carlos Alberto Vega-Posada, University of Antioquia

Civil Engineer, National University of Colombia. Master of Engineering, Ohio University. Doctor of Engineering, Northwester University. Assistant Professor, Faculty of Engineering, University of Antioquia.

Alba Nury Gallego-Hernández, University of Antioquia

Geological Engineer, National University of Colombia. Master of Engineering, Shimane University. Doctor of Engineering, Shimane University. Assistant Professor, Faculty of Engineering, University of Antioquia.

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