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http://dx.doi.org/10.3741/JKWRA.2020.53.3.167

Evaluation of critical tractive forces of vegetation mats enhanced with biopolymer mixed soil  

Lee, Du Han (Department of Land, Water and Environment Research, Korea Institute of Civll Engineering and Building Technology)
Kim, Myounghwan (Department of Land, Water and Environment Research, Korea Institute of Civll Engineering and Building Technology)
Publication Information
Journal of Korea Water Resources Association / v.53, no.3, 2020 , pp. 167-179 More about this Journal
Abstract
Recently, new levee material has been developed to enhance natural soil strength and vegetation growth using biopolymer. In the study, critical tractive force of vegetated mats mixed with biopolymer mixed soil has been evaluated to apply the mixed soil to levee construction material. The mixed soil has been produced by mixing beta-glucan, clay, and sand. Full scale test bodies have been constructed with 3 cm thick of the mixed soil. Total 4 test bodies have been constructed and experimented. Critical tractive forces have been evaluated by observation and measurement of failure conditions and soil loss. Although performance of the vegetated revetments are affected by vegetation coverage conditions, the critical tractive forces are shown about 40 N/㎡ and the critical velocities are shown about 4 m/sec by full scale experiment. Erosion resistance is also enhanced by combination of root and net with mat materials.
Keywords
Biopolymer mixed soil; Levee material; Critical tractive force; Vegetated mats; Full scale hydraulic experiment;
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Times Cited By KSCI : 2  (Citation Analysis)
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