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A semi-analytical methodology for development of woven geotextile filter selection criteria
 

Summary: A semi-analytical methodology for development of
woven geotextile filter selection criteria
A. H. Aydilek
Assistant Professor, Department of Civil and Environmental Engineering, 1163 Glenn Martin Hall,
University of Maryland, College Park, MD 20742, USA, Telephone: +1 301 314 2692,
Telefax: +1 301 405 2585, E-mail: aydilek@eng.umd.edu
Received 31 March 2005, revised 5 December 2005, accepted 5 February 2006
ABSTRACT: Geotextiles have been commonly used in geotechnical and environmental engineering
projects to prevent erosion of soils in contact with the filter without impeding the flow of seeping
water through the soil. Several empirical criteria incorporating varying factors of safety have been
proposed for selection of geotextile filters. A probabilistic numerical filter model, named RETAIN,
using image-based geotextile pore structure was developed for woven geotextile filters and is
presented in this paper. The paper also summarizes a new methodology to propose filter selection
criteria using the results of RETAIN. The proposed criteria based on this methodology and the
existing empirical criteria from the literature were evaluated against the actual performance
observed in the laboratory filtration tests on a silty sand specimen and a wide range of woven
geotextiles. The results indicated that RETAIN can model the filtration behavior of silty sands and
woven geotextiles, and the model output can be used to develop new geotextile selection criteria.
The method is currently applicable to one type of soil; however, the method is rational, and the
applicability of the methodology to other soils with a range of particle size distributions can be

  

Source: Aydilek, Ahmet - Department of Civil and Environmental Engineering, University of Maryland at College Park

 

Collections: Engineering