Effect of cement on the stabilization of loess

doi:10.1007/s11629-017-4365-4

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > Journal of Mountain Science > Journal of Mountain Science-2017 > Vol14 No.11

	Effect of cement on the stabilization of loess
	Zhang Chong-lei1 ; Jiang Guan-lu 2; Su Li-jun1,3,4 ; Zhou Gong-dan1,4
刊名	JOURNAL OF MOUNTAIN SCIENCE
	2017-11-01
卷号	14 期号:11 页码:2325-2336
关键词	Landslide Cement Loess Stabilization Durability Index Wetting-drying Cycle
ISSN号	1672-6316
DOI	10.1007/s11629-017-4365-4
文献子类	Article
英文摘要	Considering the potential use of cementstabilized loess (CSL) as a construction material for structures that are subjected to frequent loess landslides, this paper explores the stabilization and improvement of geotechnical characteristics of loess achieved by the addition of 0%-9% cement by dry weight. Laboratory evaluations investigated the consistency limits, compaction, compressibility, California bearing ratio (CBR), direct shear strength, and unconfined compression strength (UCS) of CSL for different curing stages. A durability index was quantified to estimate the influence of wetting-drying (w-d) cycles on CSL strength, and an optimum cement dosage was also identified. The results reveal that the cohesion of CSL is substantially more sensitive to structure than its friction angle and that cohesion is responsible for shear strength increase after remoulding. The cement proportions have an effective role in the enhancement of compressibility. The development of UCS can be categorized into the early stage (< 14 days) and the later stage (> 14 days). The increase in strength primarily occurred in the first 14 days. The w-d cycles have a significant influence on the decrease in compression strength. The CBR value increases with increments of additional proportions and compaction times. The relationships of UCS versus the compressibility modulus and UCS versus CBR are established to facilitate the mix design for strength. A rational predictive exponential equation is proposed to predict the durability index for different w-d cycles.
WOS关键词	FLY-ASH ; STRENGTH DEVELOPMENT ; ENGINEERING PROPERTIES ; SHEAR BEHAVIOR ; TREATED SOILS ; CENTRAL CHINA ; MARINE CLAY ; LIME
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000415351800014
资助机构	National Basic Research Program (973 Program) of China(2013CB733201) ; Key Research Program of Frontier Sciences, CAS(QYZDB-SSW-DQC010) ; Sichuan science and technology plan project(2017JY0251) ; CAS "Light of West China" Program(Y6R2240240) ; Youth Fund of Institute of Mountain Hazards and Environment, CAS(Y6K2090090)
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/19198]
专题	Journal of Mountain Science _Journal of Mountain Science-2017_Vol14 No.11 成都山地灾害与环境研究所_山地灾害与地表过程重点实验室
通讯作者	Su Li-jun
作者单位	1.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Hazards & Earth Surface Proc, Chengdu 610041, Sichuan, Peoples R China 2.Southwest Jiaotong Univ, Sch Civil Engn, Key Lab High Speed Railway Engn, Minist Educ, Chengdu 610031, Sichuan, Peoples R China 3.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zhang Chong-lei,Jiang Guan-lu,Su Li-jun,et al. Effect of cement on the stabilization of loess[J]. JOURNAL OF MOUNTAIN SCIENCE,2017,14(11):2325-2336.
APA	Zhang Chong-lei,Jiang Guan-lu,Su Li-jun,&Zhou Gong-dan.(2017).Effect of cement on the stabilization of loess.JOURNAL OF MOUNTAIN SCIENCE,14(11),2325-2336.
MLA	Zhang Chong-lei,et al."Effect of cement on the stabilization of loess".JOURNAL OF MOUNTAIN SCIENCE 14.11(2017):2325-2336.