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Effect of seating time on transmissivity and permittivity of nonwoven geotextiles
In the present work, an attempt has been made to study, in detail, the effect of seating time on in-plane permeability (transmissivity) and cross-plane permeability (permittivity) of nonwoven geotextiles using constant head permeability test methods. Three different types of commercially available nonwoven geotextiles (GTX-1, GTX-2 and GTX-3) were used in the present study. The results obtained from the experimental study show that the transmissivity of geotextiles decreases as the seating time increases. Permittivity tests showed a similar trend as the variation of transmissivity. It was observed that on application of a certain normal compressive stress on geotextile specimen, permittivity and transmissivity of geotextiles do not reduced to a final value immediately, but it takes about 25 minutes to 35 minutes to attain a stabilised value under the influence of that load. It was also observed that a decrease in transmissivity and permittivity was higher for the geotextile having larger opening size (O90), for the same load increment.
Effect of seating time on transmissivity and permittivity of nonwoven geotextiles
In the present work, an attempt has been made to study, in detail, the effect of seating time on in-plane permeability (transmissivity) and cross-plane permeability (permittivity) of nonwoven geotextiles using constant head permeability test methods. Three different types of commercially available nonwoven geotextiles (GTX-1, GTX-2 and GTX-3) were used in the present study. The results obtained from the experimental study show that the transmissivity of geotextiles decreases as the seating time increases. Permittivity tests showed a similar trend as the variation of transmissivity. It was observed that on application of a certain normal compressive stress on geotextile specimen, permittivity and transmissivity of geotextiles do not reduced to a final value immediately, but it takes about 25 minutes to 35 minutes to attain a stabilised value under the influence of that load. It was also observed that a decrease in transmissivity and permittivity was higher for the geotextile having larger opening size (O90), for the same load increment.
Effect of seating time on transmissivity and permittivity of nonwoven geotextiles
Shukla, S.K. (author) / Sharma, U. (author)
2006
4 Seiten, 8 Bilder, 1 Tabelle, 4 Quellen
Conference paper
Storage medium
English
Effect of seating time on transmissivity and permittivity of nonwoven geotextiles
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