Effect of evaporation on the performance of capillary barriers with recycled asphalt material

F. R. Harnas, H. Rahardjo, E. C. Leong, J. Y. Wang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

A capillary barrier is a cover system to reduce water infiltration. It has been applied in landfills and slope stabilization. The objective of this study is to investigate the performance of a capillary barrier made from recycled asphalt under infiltration and evaporation fluxes. A series of infiltration and evaporation experiments were conducted in a column test. The study showed that evaporative flux affected the pore-water pressure head in the capillary barrier.A more negative initial condition of pore-water pressure head was achieved with the application of evaporative flux. This initial condition resulted in the column storing more water before breakthrough occurred. However, the increase in water storage was found to be relatively small. The small increase could be attributed to the fact that water had drained downwards and as a result the water availability in the fine-grained layer was low. The results of laboratory experiments agreed well with the results of numerical modeling.

Original languageEnglish
Title of host publicationComputer Methods and Recent Advances in Geomechanics - Proc. of the 14th International Conference of International Association for Computer Methods and Recent Advances in Geomechanics, IACMAG 2014
PublisherTaylor and Francis - Balkema
Pages1309-1314
Number of pages6
ISBN (Print)9781138001480
Publication statusPublished - 2015
Externally publishedYes
Event14th International Conference of International Association for Computer Methods and Recent Advances in Geomechanics, IACMAG 2014 - Kyoto, Japan
Duration: Sept 22 2014Sept 25 2014

Publication series

NameComputer Methods and Recent Advances in Geomechanics - Proceedings of the 14th Int. Conference of International Association for Computer Methods and Recent Advances in Geomechanics, IACMAG 2014

Conference

Conference14th International Conference of International Association for Computer Methods and Recent Advances in Geomechanics, IACMAG 2014
Country/TerritoryJapan
CityKyoto
Period9/22/149/25/14

ASJC Scopus Subject Areas

  • Computer Science Applications
  • Geochemistry and Petrology

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