Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Submergence and Wave Action Resilience of Vetiver Grass Protected Fly Ash Amended Soil Slopes
https://orcid.org/0000-0003-4271-8320
https://orcid.org/0000-0001-9620-2413
Abstract This study aims to investigate the durability of vegetated slopes using vetiver grass (Vetiveria zizanioides), constructed with fly ash-amended soil (FAS) against submergence and wave action in swampy areas. Four model slopes were fabricated using soil (silty sand, ϕ = 28°) of swampy area, and stabilizing the soil with 8.5% (w/w) fly ash. Slopes of two models were vegetated with vetiver, while one model had its slope protected with jute-geotextile. After 172 days of fabrication, slopes were submerged for 5 days, and then subjected to wave action of 0.2–0.3 m/s velocity. The maximum shoot and root length of vetiver varied within 130–170 cm and 61–74 cm, respectively. FAS with jute-geotextile increased the number of tillers and vegetation-covered areas subsequently by 2.0 and 2.4 times. Vetiver increased the slope durability 15 times longer with 19% less soil loss than that of the bare slope model. Resilience of the model fabricated with FAS and protected by vetiver enhanced the duration by 2 times through minimizing soil erosion by 12%. However, for the model fabricated with FAS and protected with vetiver and jute-geotextile, the duration was amplified by 3 times with 60% less soil loss than that of the vetiver protected slope. Vetiver enhanced the slope resilience to wave action and submergence. However, vetiver grass along with fly ash and jute-geotextile enhances the resilience of slope to wave action and submergence by improving soil strength, nutrient, microscopic properties; and by reducing permeability, seepage, soil erosion, forming a compatible protection system.
Submergence and Wave Action Resilience of Vetiver Grass Protected Fly Ash Amended Soil Slopes
https://orcid.org/0000-0003-4271-8320
https://orcid.org/0000-0001-9620-2413
Abstract This study aims to investigate the durability of vegetated slopes using vetiver grass (Vetiveria zizanioides), constructed with fly ash-amended soil (FAS) against submergence and wave action in swampy areas. Four model slopes were fabricated using soil (silty sand, ϕ = 28°) of swampy area, and stabilizing the soil with 8.5% (w/w) fly ash. Slopes of two models were vegetated with vetiver, while one model had its slope protected with jute-geotextile. After 172 days of fabrication, slopes were submerged for 5 days, and then subjected to wave action of 0.2–0.3 m/s velocity. The maximum shoot and root length of vetiver varied within 130–170 cm and 61–74 cm, respectively. FAS with jute-geotextile increased the number of tillers and vegetation-covered areas subsequently by 2.0 and 2.4 times. Vetiver increased the slope durability 15 times longer with 19% less soil loss than that of the bare slope model. Resilience of the model fabricated with FAS and protected by vetiver enhanced the duration by 2 times through minimizing soil erosion by 12%. However, for the model fabricated with FAS and protected with vetiver and jute-geotextile, the duration was amplified by 3 times with 60% less soil loss than that of the vetiver protected slope. Vetiver enhanced the slope resilience to wave action and submergence. However, vetiver grass along with fly ash and jute-geotextile enhances the resilience of slope to wave action and submergence by improving soil strength, nutrient, microscopic properties; and by reducing permeability, seepage, soil erosion, forming a compatible protection system.
Submergence and Wave Action Resilience of Vetiver Grass Protected Fly Ash Amended Soil Slopes
https://orcid.org/0000-0003-4271-8320
https://orcid.org/0000-0001-9620-2413
Abstract This study aims to investigate the durability of vegetated slopes using vetiver grass (Vetiveria zizanioides), constructed with fly ash-amended soil (FAS) against submergence and wave action in swampy areas. Four model slopes were fabricated using soil (silty sand, ϕ = 28°) of swampy area, and stabilizing the soil with 8.5% (w/w) fly ash. Slopes of two models were vegetated with vetiver, while one model had its slope protected with jute-geotextile. After 172 days of fabrication, slopes were submerged for 5 days, and then subjected to wave action of 0.2–0.3 m/s velocity. The maximum shoot and root length of vetiver varied within 130–170 cm and 61–74 cm, respectively. FAS with jute-geotextile increased the number of tillers and vegetation-covered areas subsequently by 2.0 and 2.4 times. Vetiver increased the slope durability 15 times longer with 19% less soil loss than that of the bare slope model. Resilience of the model fabricated with FAS and protected by vetiver enhanced the duration by 2 times through minimizing soil erosion by 12%. However, for the model fabricated with FAS and protected with vetiver and jute-geotextile, the duration was amplified by 3 times with 60% less soil loss than that of the vetiver protected slope. Vetiver enhanced the slope resilience to wave action and submergence. However, vetiver grass along with fly ash and jute-geotextile enhances the resilience of slope to wave action and submergence by improving soil strength, nutrient, microscopic properties; and by reducing permeability, seepage, soil erosion, forming a compatible protection system.
Submergence and Wave Action Resilience of Vetiver Grass Protected Fly Ash Amended Soil Slopes
Islam, Tanzila (Autor:in) / Islam, Mohammad Shariful (Autor:in)
2022
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Fly ash , Wave Action , Erosion , Submergence , Vetiver
BKL:
57.00$jBergbau: Allgemeines
/
38.58
Geomechanik
/
57.00
Bergbau: Allgemeines
/
56.20
Ingenieurgeologie, Bodenmechanik
/
38.58$jGeomechanik
/
56.20$jIngenieurgeologie$jBodenmechanik
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