Improve Geotechnical Design Parameter of Some Soft Clayey Soils | ||||
| International Journal of Advances in Structural and Geotechnical Engineering | ||||
| Volume 03, Issue 04 - Serial Number 3062019, November 2019, Page 49-58 PDF (820.17 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/asge.2019.271029 | ||||
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| Abstract | ||||
| The shallow Soft Clayey deposit is common in Alexandria-Egypt. Many soft clays in its natural state unsuitable for support any structure. Thus, improvement treatments exist to strengthen these soils so that they can have adequately bearing capacity without undergoing failure or producing substantial excessive settlement post construction and applied loads to them. This paper presents case study of improved site of city center which reclaimed Maryout Lake, where the highly compressible clay with water content varies from 250% near the surface to 90% at the base of the shallow clay deposit. A prefabricated vertical drain with preloading has been used in improved this soil. Values of shear parameters and consolidation coefficient back calculated from field measurements, and have been compared with the values from lab and in situ tests. The study provides different relationship from comparisons of prediction and estimation compressibility and consolidation settlement from laboratory studies and particularly field case study. Also, some correlation related the compressibility with index properties of soft clay is presented. | ||||
| Keywords | ||||
| Improvement; Soft clay; preloading; vertical drain; bearing capacity | ||||
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