Geotechnical evaluation of clayey soils amended with cement kiln dust during freeze-thaw cycling
| العنوان: | Geotechnical evaluation of clayey soils amended with cement kiln dust during freeze-thaw cycling |
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| المؤلفون: | Muhannad Ismeik, Syed E. Hasan, Fathi Shaqour |
| المصدر: | Arabian Journal of Geosciences. 14 |
| بيانات النشر: | Springer Science and Business Media LLC, 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | Compressive strength, Soil test, Hazardous waste, Soil water, General Earth and Planetary Sciences, Environmental science, Geotechnical engineering, Durability, Clay soil, Industrial waste, General Environmental Science, Cement kiln |
| الوصف: | Clayey soils that occur in many countries, including Jordan, are considered poor materials for engineering construction because of their unfavorable geotechnical properties. Previous studies have shown that engineering performance of such soils can be improved by using different additives. This study was designed to evaluate geotechnical properties and durability characteristics of the Jordanian clayey soil after mixing it with cement kiln dust (CKD). The investigation involved testing 105 CKD-amended clayey soil samples to determine the optimum CKD-to-soil ratio for improving its geotechnical properties. Using ASTM standards, one set of soil samples was prepared for mineralogical and geotechnical characterization before and after mixing with 5, 10, 15, and 20% CKD by weight. A second set of samples was prepared and tested under 5, 11, 15, and 20 freeze-thaw (F-T) cycles. Results demonstrated that addition of 20% CKD improved geotechnical properties of the clayey soil including its F-T durability. F-T cycling was found to lower the unconfined compressive strength of the unstabilized soil by 88% while it was only 21% for the CKD-stabilized soil. Overall, CKD stabilization led to a 12-fold increase in unconfined compressive strength besides marked improvements in soil plasticity and workability. Results obtained from this investigation encourage endorsement and use of CKD as an excellent stabilizer to enhance engineering performance of clayey soils. In addition, utilizing an industrial waste for beneficial purposes contributes to the national waste minimization goal by recycling the hazardous CKD waste material, leading to significant economic, environmental, and sustainability benefits for infrastructure construction. |
| تدمد: | 1866-7538 1866-7511 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::00c7479114f1ab4d1523dbe8de1c4e9d https://doi.org/10.1007/s12517-021-08144-6 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi...........00c7479114f1ab4d1523dbe8de1c4e9d |
| قاعدة البيانات: | OpenAIRE |
Find this article in full text from Springer Verlag. | تدمد: | 18667538 18667511 |
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