Geosynthetics Engineering Journal
Online ISSN : 1883-146X
Print ISSN : 1344-6193
ISSN-L : 1344-6193
Ultrasonic Removal of Geosynthetics Clogging
C. GHOSHK. YASUHARAH. KOMINET. KONAMIY. KUDO
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JOURNAL FREE ACCESS

2004 Volume 19 Pages 147-152

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Abstract
This paper presents an experimental investigation of the ultrasonic removal of clogging of six commercially available geotextiles. The clogged specimens were exhumed from two fine-grained soils, which were previously consolidated from slurry stage under a consolidation pressure of 400kPa. The mechanism of ultrasound and formation of micro-bubbles in a sort of “cold boiling” or “cavitation” within liquid medium have been explained. The in-plane and cross-plane flow capacities of the clogged geotextile specimen have been evaluated before and after ultrasonic cleaning and results are presented in a design chart signifying the beneficial effect of ultrasonic cleaning. With increasing confining pressure clogging caused more reduction in the cross-plane flow capacity than the in-plane flow capacity. Ultrasonic cleaning efficiency for all clogged geotextiles was more than 80% @ 5 minutes washing time. The thinnest (2.2mm) geotextile was severely affected by clogging, however, after ultrasonic cleaning the clogging potential reduced to unity, which was not affected by increasing normal pressure.
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© Japan Chapter of International Geosynthetics Society
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