Abstract
The water retention curves (WRC) presented in this study were determined for materials constituting prototypes of evapotranspirative capillary barrier coverage, which used gneissic residual soil and non-woven geotextile. The determination of the WRC was made possible by the hanging column test for the two distinct non-woven geotextiles and the hanging column and filter paper tests for the residual soil. Both tests were executed with both the drying and wetting trajectories. The curves were adjusted and the hydraulic conductivity functions were estimated, thus enabling a greater understanding of the hydraulic behavior of the materials involved. The non-woven geotextiles and residual soil presented WRC, as expected, similar to the WRC presented in the literature for similar materials.
Highlights
Capillary barrier, a type of evapotranspiration cover (ETC), is a technology that has been successfully used in climates where evapotranspiration overcomes precipitation, Zhang et al (2016) [1]
The water retention curves of GTA and GTB were determined by the adapted hanging column test, as well as the initial portion of the water retention curve of the residual soil
The non-woven geotextile (NGT) test specimens and the residual soil specimen were always weighed at the end of that time and saturated and again available to the imposition of the suction of interest, which was generated by the level difference between the funnel and the reservoir
Summary
A type of evapotranspiration cover (ETC), is a technology that has been successfully used in climates where evapotranspiration overcomes precipitation, Zhang et al (2016) [1]. It can be used as a final cover for solid wastes, including mining tailings and wastes, with the function of flow control, both in the basal percolation of water and in the control of gas flow from waste decomposition. These barriers are designed with the permeability contrast of its constituents, basically the fine soil overlapping the thick soil.
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
