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Mätning av hydraulisk konduktivitet med Lewis metod: En utvärdering av tillförlitligheten och användbarheten hos en enkel metod för mätning i olika jordarter
Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
2016 (Swedish)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

The purpose of this study was to evaluate Lewis (2016) simple method to determine hydraulic conductivity in soil samples. This was conducted by comparing Lewis method to a slug-test, Guelph permeameter and calculations from grain size analysis in order to find out if the method is a reliable source for measuring hydraulic conductivity. Other parameters to compare is time consumption, cost effectiveness and area of use. Four different samples were used in the testing, a sand, two tills and pyrite ash (which is a rest product from manufacturing sulfite pulp). The results indicated that measurements in the homogenic sand all methods was in a good range of each other, while in the more heterogenic till the slug-test and Lewis method was close and the calculations from grainsize analysis was much lower. Only grainsize analysis was performed on the pyrite ash and the results was similar to Lewis method. This study shows that Lewis method works well as a reliable source for K measurements and is less time consuming than all the other methods. The material required for the method can be obtained in a hardware store.

Place, publisher, year, edition, pages
2016. , 14 p.
Keyword [en]
Hydraulic conductivity, Lewis method, Slug-test, Grain-size analysis, Guelph permeameter
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:umu:diva-127311OAI: oai:DiVA.org:umu-127311DiVA: diva2:1044856
External cooperation
Tyréns AB
Educational program
Bachelor of Science in Biology and Earthscience
Available from: 2016-11-10 Created: 2016-11-07 Last updated: 2016-11-10Bibliographically approved

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Department of Ecology and Environmental Sciences
Natural Sciences

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