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http://dx.doi.org/10.7843/kgs.2008.24.4.15

A Long Term Characteristics of Hydraulic Conductivity and Tensile Strength of Natural Fiber Drain with respect to Installation Conditions  

Jang, Jin-Young (Dept. of Geotechnical Engrg., Teso Engrg.)
Jang, Yeon-Soo (Dept. of Civil & Environmental Engrg., Univ. of Dongguk)
Cho, Sam-Duck (Geotechnical Engrg. Division, Korea Institute of Construction Technology)
Publication Information
Journal of the Korean Geotechnical Society / v.24, no.4, 2008 , pp. 15-21 More about this Journal
Abstract
Long term changes of hydraulic properties and tensile strength of natural fiber drain (NFD) are analyzed and compared with those of intact NFD's. NFD was buried in distilled water, two types of seawater and clay soils obtained in southern and western parts of Korea, Kwang-Yang and Si-hwa. Specimens are taken out in 0, 3, 9 and 18 month intervals, and durability tests of the NFD are performed. Hydraulic conductivity of the NFD samples decreased compared with that of intact NFD samples, because clay particles easily passed to coarsened mesh of filters and clogged the porous stone below and reduced hydraulic conductivity. Tensile strength of drains from the soil bucket is reduced larger than those in the seawater and the distilled water. Strength reduction was higher in summer than winter.
Keywords
Clogging; Hydraulic conductivity; Installation; Natural fiber drain; Tensile strength;
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