Dynamics and characteristics of pore space changes during the crumbling on drying of structured agricultural soils
| Autor: | A.J. Koolen, O.B. Aluko |
|---|---|
| Rok vydání: | 2001 |
| Předmět: |
Aggregate (composite)
Materials science Moisture Soil test Leerstoelgroep Bodemtechnologie Soil Science Soil Technology Group Thawing PE&RC Intra-aggregate Inter-aggregate Structured soil Soil structure Freezing Ultimate tensile strength Soil water Geotechnical engineering Crumbling Pore space Porosity Agronomy and Crop Science Earth-Surface Processes Shrinkage |
| Zdroj: | Soil & Tillage Research, 58, 45-54 Soil & Tillage Research 58 (2001) |
| ISSN: | 0167-1987 |
| DOI: | 10.1016/s0167-1987(00)00176-8 |
| Popis: | An investigation was carried out to examine the characteristics and dynamics of pore space changes, during drying of a structured agricultural soil under capillary bonding stresses. The procedure involved the preparation, in batches, of several identical cylindrical soil samples. Having subjected each batch to selected sample treatments, the samples were dried to different moisture contents and a tensile strength test performed on each one. The antecedence of freezing was found to have considerable effects on pore sizes, swelling and shrinkage characteristics and moisture retention in inter-aggregate pores. Pore volume relationships are proposed. Using these relationships, a preliminary attempt has been made to gain further insight into the dynamics of pore space changes in the soil water suction range 0–100 mbar. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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