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Effect of Nanoclay-Depended Treatment on the Mechanical Behavior of a Collapsible Soil | ||
Journal of Rehabilitation in Civil Engineering | ||
مقاله 36، دوره 13، شماره 4 - شماره پیاپی 40، بهمن 2025، صفحه 229-240 اصل مقاله (637.83 K) | ||
نوع مقاله: Regular Paper | ||
شناسه دیجیتال (DOI): 10.22075/jrce.2025.34865.2151 | ||
نویسندگان | ||
Bilal Muiassar M. Salih1؛ Hind Nadhum Raheem2؛ Mustafa Jamal Abrahim* 1؛ Mohammmed Shakir Mahmood3؛ Suha A. H. Aldarraji3 | ||
1Civil Engineering Department, Al-Iraqia University, Baghdad, Iraq | ||
2Directorate of Education, Ministry of Education, Najaf, Iraq | ||
3Civil Engineering Department, University of Kufa, Al-Najaf, Iraq | ||
تاریخ دریافت: 05 مرداد 1403، تاریخ بازنگری: 10 آذر 1403، تاریخ پذیرش: 26 دی 1403 | ||
چکیده | ||
The research investigates the effects of adding nanoclay on the shear strength properties of two gypseous sand soils. The soil samples were taken from the cities of Tikrit (55% gypsum) and Al-Najaf (29% gypsum). A direct shear test was used to examine soil specimens in dry conditions and immediately after a saturation procedure. The distributed soil specimens were remolded in the direct shear box to achieve a specific density. The shear speed was 1.0 mm/min. For both soil samples, there are different added nanoclay contents, 0, 2, 5, and 7%. Three levels of normal stress are applied, 25, 50, and 100 kPa on each soil specimen. The results state that there is a significant decrease in the angle of internal friction with saturation for both soil samples due to the gypsum solution in these soils. The resulting saturated F is significantly lower than the reported mean values in the literature. The F is recovered by adding nanoclay content up to 5% worthily. A mathematical model correlates the values of F and the percentage of nanoclay using a regression analysis with restricting gypsum content (29-55%) and nanoclay (≥ 0%) in saturation conditions. | ||
تازه های تحقیق | ||
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کلیدواژهها | ||
Nanoclay؛ Gypseous sand؛ Shear strength؛ Collapse؛ Direct shear | ||
مراجع | ||
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