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Geotextile Filter Failures Under Challenging Field Conditions
This paper reviews seventy (70) field failures involving geotextile filters. They are grouped into four categories: inadequate design, atypical soils, unusual permeants, and improper installation. In the first category are poor fabric selection, poor fabric design, socked drainage pipe and reversing flow conditions. In the second category are fine grained soils, gap-graded soils, dispersive clays and ochre. In the third category are sludges, turbid water, alkaline water, leachates and agricultural waste liquids. In the fourth category are lack of intimate contact and glued surfaces. While not the topic of the paper, per se, most of these same conditions are known to be troublesome to soil filters as well as to geotextile filters. In spite of such obvious problematic conditions, however, none of the four standardized long-term flow tests were conducted during the design phase for any of the case histories. Clearly, such situations can be simulated in the laboratory so as to avoid such occurrences in the future. That said, this paper aims to draw attention to those geotextile filter failures which can be readily avoided with proper attention to design, testing and construction.
Geotextile Filter Failures Under Challenging Field Conditions
This paper reviews seventy (70) field failures involving geotextile filters. They are grouped into four categories: inadequate design, atypical soils, unusual permeants, and improper installation. In the first category are poor fabric selection, poor fabric design, socked drainage pipe and reversing flow conditions. In the second category are fine grained soils, gap-graded soils, dispersive clays and ochre. In the third category are sludges, turbid water, alkaline water, leachates and agricultural waste liquids. In the fourth category are lack of intimate contact and glued surfaces. While not the topic of the paper, per se, most of these same conditions are known to be troublesome to soil filters as well as to geotextile filters. In spite of such obvious problematic conditions, however, none of the four standardized long-term flow tests were conducted during the design phase for any of the case histories. Clearly, such situations can be simulated in the laboratory so as to avoid such occurrences in the future. That said, this paper aims to draw attention to those geotextile filter failures which can be readily avoided with proper attention to design, testing and construction.
Geotextile Filter Failures Under Challenging Field Conditions
Koerner, Robert M. (author) / Koerner, George R. (author)
Geo-Congress 2013 ; 2013 ; San Diego, California, United States
Sound Geotechnical Research to Practice ; 272-289
2013-02-25
Conference paper
Electronic Resource
English
Geotextile Filter Failures Under Challenging Field Conditions
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