Use of digital image analysis combined with fractal theory to determine particle morphology and surface texture of quartz sands
| Autor: | Georgia Serafim Araújo, Kátia Vanessa Bicalho, Fernando Avancini Tristão |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Soil test
Soil texture Particle morphology and surface texture 0211 other engineering and technologies Mineralogy 02 engineering and technology Surface finish Quartz sands Geotechnical Engineering and Engineering Geology Fractal dimension Texture (geology) Roundness (object) Sphericity Image analysis Fractal lcsh:Engineering geology. Rock mechanics. Soil mechanics. Underground construction 021105 building & construction lcsh:TA703-712 Fractal theory Geology 021101 geological & geomatics engineering |
| Zdroj: | Journal of Rock Mechanics and Geotechnical Engineering, Vol 9, Iss 6, Pp 1131-1139 (2017) |
| ISSN: | 1674-7755 |
| Popis: | The particle morphology and surface texture play a major role in influencing mechanical and hydraulic behaviors of sandy soils. This paper presents the use of digital image analysis combined with fractal theory as a tool to quantify the particle morphology and surface texture of two types of quartz sands widely used in the region of Vitoria, Espirito Santo, southeast of Brazil. The two investigated sands are sampled from different locations. The purpose of this paper is to present a simple, straightforward, reliable and reproducible methodology that can identify representative sandy soil texture parameters. The test results of the soil samples of the two sands separated by sieving into six size fractions are presented and discussed. The main advantages of the adopted methodology are its simplicity, reliability of the results, and relatively low cost. The results show that sands from the coastal spit (BS) have a greater degree of roundness and a smoother surface texture than river sands (RS). The values obtained in the test are statistically analyzed, and again it is confirmed that the BS sand has a slightly greater degree of sphericity than that of the RS sand. Moreover, the RS sand with rough surface texture has larger specific surface area values than the similar BS sand, which agree with the obtained roughness fractal dimensions. The consistent experimental results demonstrate that image analysis combined with fractal theory is an accurate and efficient method to quantify the differences in particle morphology and surface texture of quartz sands. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|