Comparison of Pore-Size Distribution of Soils Obtained by Different Methods
| Autor: | Lingwei Kong, Min Wang, G. N. Pande, Yuntian Feng |
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| Rok vydání: | 2016 |
| Předmět: |
Pore size
0211 other engineering and technologies Testing equipment Soil Science Soil science 04 agricultural and veterinary sciences 02 engineering and technology Distribution (mathematics) Average size Soil water 040103 agronomy & agriculture Range (statistics) 0401 agriculture forestry and fisheries Environmental science Geotechnical engineering Mercury intrusion porosimetry Soil mechanics 021101 geological & geomatics engineering |
| Popis: | An average size of pores and pore-size distribution (POSD) is often required for advanced constitutive models for soils adopted for hydro-mechanical-thermal coupled problems. There are a number of methods available for determining POSD, with most requiring specific testing equipment and expertise. In this paper, a comparison is made of POSDs obtained from two different techniques, viz, mercury intrusion porosimetry (MIP) and the pressure plate test (PPT). The former requires a specialists’ apparatus not commonly available in soil laboratories and also has safety issues, whereas the latter is more common because it is used to determine soil water retention characteristics of soils. On the basis of certain assumptions, it is demonstrated that POSDs obtained from the two techniques match well and PPT can be used by researchers in soil mechanics to obtain POSD. The range of pore sizes determined by the two techniques is, however, different. Also, the POSD obtained from other soil water retention curve... |
| Databáze: | OpenAIRE |
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