干旱区生态环境知识资源中心(Arid): Experimental Study on Sustainable Utilization of CKD for Improvement of Collapsible Soil

Arid

DOI	10.1007/s13369-022-07565-z
	Experimental Study on Sustainable Utilization of CKD for Improvement of Collapsible Soil
	Shah, Mudassar Munir; Shahzad, Hassan Mujtaba; Khalid, Usama; Farooq, Khalid; Ur Rehman, Zia
通讯作者	Shah, MM
来源期刊	ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
ISSN	2193-567X
EISSN	2191-4281
出版年	2023
卷号	48 期号:4 页码:5667-5682
英文摘要	Heavy structures built on untreated collapsible soil remain susceptible to failure due to abrupt changes in the soil structure upon wetting. Industrial wastes like cement kiln dust (CKD) can be used to solve this problem. For this study, undisturbed and disturbed collapsible soil samples were collected from Thal Haro arid area, Punjab, Pakistan. CKD was mixed up to 20% to stabilize the collapsible soil with a maximum of 28 days of curing time. To perform strength tests and collapsible potential tests, samples were remolded at optimal water content and maximum dry unit weight. The CKD content exponentially improves the unconfined compression strength, deformation modulus, and soaked California bearing ratio; however, it marginalizes the ductility of treated soil. With the addition of CKD, the strain at failure and deformability index is significantly decreased. Moreover, for microstructural characteristics comparison, X-ray diffraction (XRD), scanning electron microscope (SEM), and energy-dispersive X-ray spectroscopy (EDAX) analyses were performed on untreated and treated samples. Due to the addition of CKD, XRD and EDAX results show the new peaks of calcium and calcium silicate, respectively, in treated samples. The formation of the new element and compound indicates the generation of bonds among soil partials owing to the hydration and pozzolanic reactions which is also verified by the SEM results. The SEM analyses manifest the conversion of the dispersed and silt-dominated structure of the native collapsible soil to a reticulated structure without micropores due to the addition of CKD.
英文关键词	Collapsible soil Cement kiln dust Mechanical properties Collapse potential Microstructure evaluation
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000906614700003
WOS关键词	CEMENT KILN DUST ; STABILIZATION ; FRESH
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/395418
推荐引用方式 GB/T 7714	Shah, Mudassar Munir,Shahzad, Hassan Mujtaba,Khalid, Usama,et al. Experimental Study on Sustainable Utilization of CKD for Improvement of Collapsible Soil[J],2023,48(4):5667-5682.
APA	Shah, Mudassar Munir,Shahzad, Hassan Mujtaba,Khalid, Usama,Farooq, Khalid,&Ur Rehman, Zia.(2023).Experimental Study on Sustainable Utilization of CKD for Improvement of Collapsible Soil.ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING,48(4),5667-5682.
MLA	Shah, Mudassar Munir,et al."Experimental Study on Sustainable Utilization of CKD for Improvement of Collapsible Soil".ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING 48.4(2023):5667-5682.