Journal of Applied Science and Engineering

Published by Tamkang University Press

1.30

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2.10

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Yung-Shan Hong This email address is being protected from spambots. You need JavaScript enabled to view it.1, Cho-Sen Wu1 , Zon-Yee Yang1 , Wei F. Lee2 and Ruei-Hung Wang1

1Department of Civil Engineering, Tamkang University, Tamsui, Taiwan 251, R.O.C.
2Office of Research and Development, National Taiwan University of Science and Technology, Taipei, Taiwan 106, R.O.C.


 

Received: October 16, 2009
Accepted: December 21, 2010
Publication Date: March 1, 2011

Download Citation: ||https://doi.org/10.6180/jase.2011.14.1.03  


ABSTRACT


The load type influence on the filtration behavior of soil-nonwoven geotextile composite has been studied through a series of tests using an experimental apparatus designed specifically for the laboratory tests. In these tests, the soil-geotextile composite was formed by inserting a piece of nonwoven geotextile between a 5-cm thick soil and a layer of steel beads. One of the three load types, namely sustained load, pulsatory load, and compound load of pulsatory and sustained load, was applied to the composite prior to the filtration test. Water was allowed to flow through the composite from the soil into a drainage layer at various hydraulic gradients. The permeability value was extracted by using Darcy’s law to characterize the filtration performance of the entire soil-geotextile composite. The test results revealed that the void ratio decreased with the increase of total load. Composite exhibited a normal relationship between the permeability and the normal load applied; the permeability increased with an increase in the total load. Different load types could produce different results in the permeability for the soil-geotextile composites under study.


Keywords: Sustained Load, Pulsatory Load, Non-Woven Geotextile, Permeability, Soil Composite, Filtration


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