Investigating the effect of lignosulfonate on erosion rate of the embankments constructed with clayey sand
| Autor: | Hossein Moayedi, Amir Hossein Vakili, Hamid Reza Koohpeyma, Ramli Nazir, Alireza Panjsetooni |
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| Rok vydání: | 2013 |
| Předmět: |
Conservation of Natural Resources
Geological Phenomena Article Subject lcsh:Medicine Soil science lcsh:Technology Erosion rate Lignin General Biochemistry Genetics and Molecular Biology Dam failure Soil Engineering Internal erosion lcsh:Science Erosion resistance General Environmental Science geography geography.geographical_feature_category lcsh:T lcsh:R General Medicine Silicon Dioxide Sand specimen Water Resources Environmental science Clay lcsh:Q Aluminum Silicates Levee Natural state Research Article |
| Zdroj: | The Scientific World Journal The Scientific World Journal, Vol 2013 (2013) |
| ISSN: | 1537-744X |
| Popis: | Internal erosion is known as the most important cause of dam failure after overtopping. It is important to improve the erosion resistance of the erodible soil by selecting an effective technique along with the reasonable costs. To prevent internal erosion of embankment dams the use of chemical stabilizers that reduce the soil erodibility potential is highly recommended. In the present study, a lignin-based chemical, known as lignosulfonate, is used to improve the erodibility of clayey sand specimen. The clayey sand was tested in various hydraulic heads in terms of internal erosion in its natural state as well as when it is mixed with the different percentages of lignosulfonate. The results show that erodibility of collected clayey sand is very high and is dramatically reduced by adding lignosulfonate. Adding 3% of lignosulfonate to clayey sand can reduce the coefficient of soil erosion from 0.01020 to 0.000017. It is also found that the qualitative erodibility of stabilized soil with 3% lignosulfonate is altered from the group of extremely rapid to the group of moderately slow. |
| Databáze: | OpenAIRE |
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