Improvement of geotechnical properties of sabkha soil utilizing cement kiln dust

Improvement of properties of weak soils in terms of strength, durability and cost is the key from engineering point of view. The weak soils could be stabilized using mechanical and/or chemical methods. Agents added during chemical stabilization could improve the engineering properties of treated soi...

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Main Authors: Abdullah A. Al-Homidy, Mohammed H. Dahim, Ahmed K. Abd El Aal
Format: Article
Language:English
Published: Elsevier 2017-08-01
Series:Journal of Rock Mechanics and Geotechnical Engineering
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S1674775516301081
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spelling doaj-d4d77ad8eba04cd48fde106e78fe208e2020-11-24T23:18:48ZengElsevierJournal of Rock Mechanics and Geotechnical Engineering1674-77552017-08-019474976010.1016/j.jrmge.2016.11.012Improvement of geotechnical properties of sabkha soil utilizing cement kiln dustAbdullah A. Al-Homidy0Mohammed H. Dahim1Ahmed K. Abd El Aal2Department of Civil Engineering, Najran University, Najran, Saudi ArabiaDepartment of Civil Engineering, Najran University, Najran, Saudi ArabiaDepartment of Civil Engineering, Najran University, Najran, Saudi ArabiaImprovement of properties of weak soils in terms of strength, durability and cost is the key from engineering point of view. The weak soils could be stabilized using mechanical and/or chemical methods. Agents added during chemical stabilization could improve the engineering properties of treated soils. Stabilizers utilized have to satisfy noticeable performance, durability, low price, and can be easily implemented. Since cement kiln dust (CKD) is industrial by-product, it would be a noble task if this waste material could be utilized for stabilization of sabkha soil. This study investigates the feasibility of utilizing CKD for improving the properties of sabkha soil. Soil samples are prepared with 2% cement and 10%, 20% or 30% CKD and are tested to determine their unconfined compressive strength (UCS), soaked California bearing ratio (CBR) and durability. Mechanism of stabilization is studied utilizing advanced techniques, such as the scanning electron microscope (SEM), energy dispersive X-ray analysis (EDX), backscattered electron image (BEI) and X-ray diffraction analysis (XRD). It is noted that the sabkha soil mixed with 2% cement and 30% CKD could be used as a sub-base material in rigid pavements. The incorporation of CKD leads to technical and economic benefits.http://www.sciencedirect.com/science/article/pii/S1674775516301081Sabkha soilGeotechnical propertiesSoil improvementCement kiln dust (CKD)Unconfined compressive strength (UCS)Soaked California bearing ratio (CBR)Durability
collection DOAJ
language English
format Article
sources DOAJ
author Abdullah A. Al-Homidy
Mohammed H. Dahim
Ahmed K. Abd El Aal
spellingShingle Abdullah A. Al-Homidy
Mohammed H. Dahim
Ahmed K. Abd El Aal
Improvement of geotechnical properties of sabkha soil utilizing cement kiln dust
Journal of Rock Mechanics and Geotechnical Engineering
Sabkha soil
Geotechnical properties
Soil improvement
Cement kiln dust (CKD)
Unconfined compressive strength (UCS)
Soaked California bearing ratio (CBR)
Durability
author_facet Abdullah A. Al-Homidy
Mohammed H. Dahim
Ahmed K. Abd El Aal
author_sort Abdullah A. Al-Homidy
title Improvement of geotechnical properties of sabkha soil utilizing cement kiln dust
title_short Improvement of geotechnical properties of sabkha soil utilizing cement kiln dust
title_full Improvement of geotechnical properties of sabkha soil utilizing cement kiln dust
title_fullStr Improvement of geotechnical properties of sabkha soil utilizing cement kiln dust
title_full_unstemmed Improvement of geotechnical properties of sabkha soil utilizing cement kiln dust
title_sort improvement of geotechnical properties of sabkha soil utilizing cement kiln dust
publisher Elsevier
series Journal of Rock Mechanics and Geotechnical Engineering
issn 1674-7755
publishDate 2017-08-01
description Improvement of properties of weak soils in terms of strength, durability and cost is the key from engineering point of view. The weak soils could be stabilized using mechanical and/or chemical methods. Agents added during chemical stabilization could improve the engineering properties of treated soils. Stabilizers utilized have to satisfy noticeable performance, durability, low price, and can be easily implemented. Since cement kiln dust (CKD) is industrial by-product, it would be a noble task if this waste material could be utilized for stabilization of sabkha soil. This study investigates the feasibility of utilizing CKD for improving the properties of sabkha soil. Soil samples are prepared with 2% cement and 10%, 20% or 30% CKD and are tested to determine their unconfined compressive strength (UCS), soaked California bearing ratio (CBR) and durability. Mechanism of stabilization is studied utilizing advanced techniques, such as the scanning electron microscope (SEM), energy dispersive X-ray analysis (EDX), backscattered electron image (BEI) and X-ray diffraction analysis (XRD). It is noted that the sabkha soil mixed with 2% cement and 30% CKD could be used as a sub-base material in rigid pavements. The incorporation of CKD leads to technical and economic benefits.
topic Sabkha soil
Geotechnical properties
Soil improvement
Cement kiln dust (CKD)
Unconfined compressive strength (UCS)
Soaked California bearing ratio (CBR)
Durability
url http://www.sciencedirect.com/science/article/pii/S1674775516301081
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