Evaluation of Moisture Reduction in Aggregate Base by Wicking Geotextile using Soil Column Tests
This study investigated the distance effect on water reduction by the wicking geotextile in a base course experimentally using three sets of soil column tests. In each set of tests, two soil columns were constructed by compacting well-graded aggregate over a non-wicking woven geotextile and a wicking geotextile. A portion of the geotextile specimen was extended outside of the soil column for evaporation. The changes of the water contents in the soil column were monitored by volumetric water content sensors installed at various depths. The experimental results indicate the capillary drainage by the wicking geotextile effectively reduced water content within the soil column up to a distance from the wicking geotextile (i.e., approximately 200 mm for this specific aggregate with 10% fines). The test results also show that the wicking geotextile could reduce more water content of the aggregate below its optimum water content at a faster rate than the non-wicking geotextile.
J. Guo et al., "Evaluation of Moisture Reduction in Aggregate Base by Wicking Geotextile using Soil Column Tests," Geotextiles and Geomembranes, vol. 47, no. 3, pp. 306 - 314, Elsevier Ltd, Jun 2019.
The definitive version is available at https://doi.org/10.1016/j.geotexmem.2019.01.014
Civil, Architectural and Environmental Engineering
Keywords and Phrases
Base course; Geosynthetics; Geotextile; Suction; Water content; Wicking
International Standard Serial Number (ISSN)
Article - Journal
© 2019 Elsevier Ltd, All rights reserved.
01 Jun 2019