TJES: Khalil AA, Alzaidy MNJ, Kazzaz ZA .BEARING CAPACITY OF STRIP FOOTING ON LIME STABILIZED EXPANSIVE CLAYEY SOIL. Tikrit Journal of Engineering Sciences 2019; 26(3): 43- 50.
References
[1] Al Zubaydi AHT. “Effect of Wetting and Drying Cycles on Swell/Collapse Behavior and Cracks of Fine – Grained Soils” Tikrit Journal of Engineering Sciences 2011; 18 (4): 71-79. [2] Al-Mukhtar M, Lasledj A, Alcover JF. “Behaviour and Mineralogy Changes in Lime-Treated Expansive Soil at 20 °C” Applied Clay Science 2010; 50: 191-198. [3] Al kiki IM. “Improvement of Expansive Clayey Soil with Lime Waste” Tikrit Journal of Engineering Sciences 2006; 13 (3): 42-61. [4] Saride S, Puppala AJ, Chikyala SR. “Swell-Shrink and Strength Behaviours of Lime and Cement Stabilized Expansive Organic Clays” Applied Clay Science 2013; 85: 39-45.
Tikrit Journal of Engineering Sciences (2019) 26(3) 43- 50.
BEARING CAPACITY OF STRIP FOOTING ON LIME STABILIZED EXPANSIVE CLAYEY SOIL
Amina A..Khalil *, Mohammed N J Alzaidy, Zeena A. Kazzaz
DOI: http://doi.org/10.25130/tjes.26.3.06
Abstract
To investigate and understand the effect of lime on the engineering properties of an expansive clayey soil, 4% lime by weight of the dry soil have been added. The stabilized soil specimens were subjected to unconfined compression, swelling potential and pH value tests. Also, a finite element analyses using PLAXIS-2D software were conducted. The studied parameters include the footing size and thickness of lime stabilized soil, and then compared with the natural soil. It was proved that lime content and curing duration had a significant effect on the engineering properties of lime-treated soil. The curing duration had significantly enhanced the strength properties of the lime stabilized soil specimens, where, unconfined compressive strength has significantly improved. Also, the pH value was decreased with increasing curing durations. Moreover, it was found that the swelling potential of the lime-treated soil specimens was reduced by lime addition and increasing of the curing duration. The results of numerical analysis show that the stress-settlement behaviour and ultimate bearing capacity of footing can be considerably enhanced as the thickness of lime-treated increases, and the influence of footing width seems to be insignificant.