降温过程中孔隙的结晶变形

doi:10.13722/j.cnki.jrme.2019.0991

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Abstract The pressure exerted on pore walls by growing salt crystals in salt weathering is a major cause of deformation and damage in porous materials. Crystal growth model in a pore during cooling process was provided. The treatment considered the interaction between crystals and pore walls which is based on kinetics of crystallization. Simulations and tests are carried out to analyze the deformation behaviors of a pore induced by salt heave under conditions of different salt contents，water contents and loads during cooling process. The results show that the deformation behaviors are subjected to volume of salt crystals，initial pore diameter and length-width ratio of salt crystals，and the volume of salt crystals is influenced by water and salt contents，and the loads induced an enhancement of length-width ratio of salt crystals. This model provides a new method for revealing the mechanism and calculating the deformation of salt heave in porous materials during cooling process.

Key words： soil mechanics cooling crystallization crystal growth pore deformation crystallization pressure kinetics of crystallization

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	Articles by authors
	YING Sai1
	2
	ZHOU Fengxi1
	WEN Tao2
	CAO Yapeng3

Cite this article:

YING Sai1,2,ZHOU Fengxi1, et al. Deformation of a pore induced by crystallization during cooling process[J]. , 2020, 39(S1): 2954-2963.

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http://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2019.0991 OR http://rockmech.whrsm.ac.cn/EN/Y2020/V39/IS1/2954

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