气候变化领域集成服务门户(CCPortal): Study on the mechanism of crystallization deformation of sulfate saline soil during the unidirectional freezing process

CCPortal

DOI	10.1002/ppp.2080
	Study on the mechanism of crystallization deformation of sulfate saline soil during the unidirectional freezing process
	Zhang, Jing; Lai, Yuanming; Zhao, Yanhu; Li, Shuangyang
发表日期	2021
ISSN	1045-6740
EISSN	1099-1530
起始页码	102
结束页码	118
卷号	32 期号:1
英文摘要	The freezing of sulfate saline soil involves the coupling effect of heat and mass transfer and crystallization deformation. The influence of salt content and temperature on the crystallization of ice and salt was analyzed by using a one-side freezing experiment. Based on the effect of solute and temperature on water activity, a crystallization kinetics model of ice-water phase change in saline soil was established. The application of supersaturation in the crystallization kinetics model of solution-crystal phase change is improved with the Frezchem model. The calculated results are compared with experimental data to validate the effectiveness of the proposed model. the study shows that: (a) crystallization can be well illustrated by the proposed model based on the concepts of the formation factor of ice crystals and solution supersaturation; (b) convection and diffusion are the main means of salt redistribution, which cause the accumulation of salt above the freezing front and the formation of discontinuously distributed-layered salt crystal zones; and (c) the alternate crystallization of ice and salt increases variation i solute concentration and then increases crystallization pressure, which leads to the deformation of salt expansion.
英文关键词	crystallization kinetics; ice-water phase change; saline soil; salt crystallization
语种	英语
WOS研究方向	Physical Geography ; Geology
WOS类目	Geography, Physical ; Geology
WOS关键词	UNFROZEN WATER-CONTENT ; POROUS MATERIALS ; HYGROTHERMAL ANALYSIS ; MINERAL SOLUBILITIES ; MOISTURE TRANSPORT ; MULTIPHASE MODEL ; HEAT ; ICE ; SYSTEM ; MEDIA
WOS记录号	WOS:000550500400001
来源期刊	PERMAFROST AND PERIGLACIAL PROCESSES
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/239566
作者单位	[Zhang, Jing; Lai, Yuanming; Zhao, Yanhu; Li, Shuangyang] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou 730000, Gansu, Peoples R China; [Zhang, Jing; Lai, Yuanming; Zhao, Yanhu] Univ Chinese Acad Sci, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Jing,Lai, Yuanming,Zhao, Yanhu,et al. Study on the mechanism of crystallization deformation of sulfate saline soil during the unidirectional freezing process[J],2021,32(1).
APA	Zhang, Jing,Lai, Yuanming,Zhao, Yanhu,&Li, Shuangyang.(2021).Study on the mechanism of crystallization deformation of sulfate saline soil during the unidirectional freezing process.PERMAFROST AND PERIGLACIAL PROCESSES,32(1).
MLA	Zhang, Jing,et al."Study on the mechanism of crystallization deformation of sulfate saline soil during the unidirectional freezing process".PERMAFROST AND PERIGLACIAL PROCESSES 32.1(2021).