ISSN: 0149-6115
Published Online: 12 February 2009
Page Count: 10

A Review of the No Erosion Filter Test

Soroush, Abbas
Associate Professor,Department of Civil and Environmental Engineering, Amirkabir University of Technology (Tehran Polytechnic),Tehran,

Shourijeh, Piltan Tabatabaie
Doctoral Candidate,Department of Civil and Environmental Engineering, Amirkabir University of Technology (Tehran Polytechnic),Tehran,

(Received 23 November 2007; accepted 1 January 2009)

Abstract

The no erosion filter (NEF) test is widely accepted as the most appropriate filtration test for the substantiation of suitable critical filters in embankment dams. No consistent standard method for NEF testing has been introduced; thus, various schemes have been implemented for performing NEF tests. This paper reviews critically the antecedent research on the NEF testing procedure. The cornerstone hypothesis of NEF testing and the evolution of the testing method are reviewed. The significance of different parameters encountered in the testing procedure and their relevance and importance in the judgment are elaborated. Practical guides for proper conduction of the NEF test are recommended throughout this paper.

Keywords:
erosion, filters, no erosion filter (NEF) test, laboratory testing

Paper ID: GTJ101588
DOI: 10.1520/GTJ101588
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