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STUDY OF SOME GEOTECHNICAL PROPERTIES OF SELECTED AREAS IN AL- NASSIRIYA CITY(SOUTH OF IRAQ)

Author: Esraa Abdulaemma Mandhour
Journal: JOURNAL OF THI-QAR SCIENCE مجلة علوم ذي قار ISSN: 19918690 Year: 2011 Volume: 3 Issue: 1 Pages: 163-174
Publisher: Thi-Qar University جامعة ذي قار

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Abstract

The purpose of this work is to study the physical properties of Nassiriya city soil (South of Iraq). Geotechnical studies of physical properties show that soils consist mainly of fine grains (silt and clay) with different percentages of sand and the content of the fine – grained fraction decreases with depth in all sites. The soil in the studied area is sandy clayey silt 70%, sandy silty clay 27.5% and rarely of clayey sandy silt 2.5%.The classification of soil according to Unified Soil Classification System (USCS) showed that soils consist mainly of CH type with less amount of MH, CL and ML types respectively.
The liquid limit values ranges between 32-70%, plasticity index values ranges between 12-38%. Liquid limit and plastic limit fluctuate with depth corresponding to the variation of fine and coarse material of soil. The soil in the area is mainly non active 72.5%, normally active 25% and 2.5% is active. Moreover, Swelling potential (Low – Medium – High) and the consistence of the soil is plastic – semisolid.

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Article
SWELLING POTENTIAL AND MINERALOGY OF THI – QAR UNIVERSITY SOIL

Author: Esraa Abdulaemma Mandhour Alfatlaw
Journal: Journal of Univesity of Thi-Qar مجلة جامعة ذي قار العلمية ISSN: 66291818 Year: 2011 Volume: 7 Issue: 1 Pages: 1-15
Publisher: Thi-Qar University جامعة ذي قار

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Article
Evaluation the Efficiency of Installing Stone Columns in Ground Improvement of Al-Nassiriya City Soil
تقييم كفاءة استخدام الاعمدة الحجرية في تحسين تربة مدينة الناصرية

Authors: Esraa Abdulaemma Mandhour --- Nesreen Kurdy Thabbah Al-Obaidy
Journal: Thi-Qar University Journal for Engineering Sciences مجلة جامعة ذي قار للعلوم الهندسية ISSN: 20759746 Year: 2011 Volume: 2 Issue: 3 Pages: 44-56
Publisher: Thi-Qar University جامعة ذي قار

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This paper investigates the performance of stone columns in soft soil of Al-Nassiriya city (one of Iraqi cities in the south). A geotechnical study of physical and mechanical properties of the soil has been carried out for a selected areas from Al-Nassiriya city. A finitedifference Matlab program has been employed in simulation of installing stone columns in the aforementioned soil. Results of the study illustrate using stone columns reduces the settlement of the soil for different values of the modular ratio and replacement ratio, thusthe Wmax maximum settlement ratio changes from 30% to 16% of the modular ratios (E/E)=10 and 50 respectively. The effect of spacing and column width is taken intoconsideration.All results are reasonable and harmonic with most last studies.c-

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