干旱区生态环境知识资源中心(Arid): Experimental Investigation of Mechanical Properties of Ballast Contaminated with Wet Sand Materials

Arid

DOI	10.1061/(ASCE)GM.1943-5622.0001886
	Experimental Investigation of Mechanical Properties of Ballast Contaminated with Wet Sand Materials
	Sadeghi, Javad; Tolou Kian, Ali Reza; Fallah, Mosarreza
通讯作者	Sadeghi, J
来源期刊	INTERNATIONAL JOURNAL OF GEOMECHANICS
ISSN	1532-3641
EISSN	1943-5622
出版年	2021
卷号	21 期号:1
英文摘要	Considerable parts of worldwide railway networks cross deserts where there are frequent sandstorms, which cause contamination of ballast. One of the most important challenges for railway industries is the adverse effects of sand contamination on the mechanical properties of ballast that sometimes halt the operation of railways. Although the available studies have focused on dry sand contamination, the majority of the published reports indicate that wet sand contamination is a more important source of the problem. Due to rainwater infiltration, sands act as a lubricant in the ballast, which causes ballast aggregates to slide easily over each other, and therefore reduce the vertical stiffness and shear strengths of the ballast. To address this problem, the characteristics of railway ballast contaminated with wet sand will be investigated in this study through a comprehensive experimental investigation. Large-scale direct shear tests and plate load tests (PLTs) will be conducted on ballast samples contaminated with different percentages of sand and water content. New mathematical expressions will be derived that present ballast mechanical properties as a function of sand percentage and water content. Through the analysis of the obtained results, a new guideline will be developed for the effective maintenance of ballast in sandy areas.
英文关键词	Ballasted railway track Sand contamination Shear strength Strain modulus Plate load test
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000598783400005
WOS关键词	CLAY-FOULED BALLAST ; RAILWAY ; BEHAVIOR
WOS类目	Engineering, Geological
WOS研究方向	Engineering
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/328059
作者单位	[Sadeghi, Javad; Fallah, Mosarreza] Iran Univ Sci & Technol, Sch Railway Engn, Railway Engn, Tehran, Iran; [Tolou Kian, Ali Reza] Iran Univ Sci & Technol, Sch Railway Engn, Tehran, Iran
推荐引用方式 GB/T 7714	Sadeghi, Javad,Tolou Kian, Ali Reza,Fallah, Mosarreza. Experimental Investigation of Mechanical Properties of Ballast Contaminated with Wet Sand Materials[J],2021,21(1).
APA	Sadeghi, Javad,Tolou Kian, Ali Reza,&Fallah, Mosarreza.(2021).Experimental Investigation of Mechanical Properties of Ballast Contaminated with Wet Sand Materials.INTERNATIONAL JOURNAL OF GEOMECHANICS,21(1).
MLA	Sadeghi, Javad,et al."Experimental Investigation of Mechanical Properties of Ballast Contaminated with Wet Sand Materials".INTERNATIONAL JOURNAL OF GEOMECHANICS 21.1(2021).