Sand Grain-size Analysis Using a Laser Diffraction Analyzer
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Title
- Sand Grain-size Analysis Using a Laser Diffraction Analyzer
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Author(s)
- 최태진; 박준용; 정의영; 최진용
- KIOST Author(s)
- Park, Jun Yong(박준용); Jeong, Eui Young(정의영)
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Alternative Author(s)
- 박준용; 정의영
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Publication Year
- 2013-06-25
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Abstract
- Grain size analysis is a fundamental tool for examining sediments and classifying coastal environments. The traditional sieve method is, however, a laborious task, and a laser diffraction method is widely adapted recently. In this study a comparison of grain size data between the OASIS laser diffraction and sieve method was conducted. After precisely sieving a natural beach sand at the interval of 0.25 phi, four different fractions (0.75-1 phi, 1.75-2 phi, 2.75-3 phi and 3.75-4 phi) were selected for test. Each fraction sample was OASIS-measured four times, and the results show good precision with a range of 0.008 to 0.020 phi in standard deviation. In the cases of mixed samples of two selected fractions with various mixing ratios (1:9, 3:7, 5:5, 7:3 and 9:1), size data by the laser diffraction analyzer resolve the original modes well. However, mixed samples having less than 10 % coarse-grained component, the grain-size distributions show noticeable deviation from those expected. a comparison of grain size data between the OASIS laser diffraction and sieve method was conducted. After precisely sieving a natural beach sand at the interval of 0.25 phi, four different fractions (0.75-1 phi, 1.75-2 phi, 2.75-3 phi and 3.75-4 phi) were selected for test. Each fraction sample was OASIS-measured four times, and the results show good precision with a range of 0.008 to 0.020 phi in standard deviation. In the cases of mixed samples of two selected fractions with various mixing ratios (1:9, 3:7, 5:5, 7:3 and 9:1), size data by the laser diffraction analyzer resolve the original modes well. However, mixed samples having less than 10 % coarse-grained component, the grain-size distributions show noticeable deviation from those expected.
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URI
- https://sciwatch.kiost.ac.kr/handle/2020.kiost/26899
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Bibliographic Citation
- AOGS, pp.140, 2013
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Publisher
- AOGS
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Type
- Conference
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Language
- English
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