降温过程中孔隙的结晶变形

doi:10.13722/j.cnki.jrme.2019.0991

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摘要盐风化过程中盐结晶在孔壁产生的结晶压力是导致多孔介质材料变形与破坏的主要原因。基于结晶动力学理论，考虑了晶体与孔壁的相互作用，建立了降温过程中孔隙晶体生长模型，对降温过程中不同含盐量、含水量和荷载条件下的孔隙盐胀变形行为进行了模拟和试验分析。结果表明，孔隙的结晶变形受盐结晶体积、起始孔隙直径和盐结晶形状(盐结晶长宽比)的影响，在相同降温条件下，水盐含量影响了降温过程中盐结晶体积，而荷载的增大迫使盐结晶产生更多的横向生长(长宽比增大)。本模型为揭示降温结晶过程中多孔介质盐胀变形机制和计算盐胀变形提供了新的途径。

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	应赛1
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	周凤玺1
	文桃2
	曹亚鹏3

关键词 ：土力学, 降温结晶, 晶体生长, 孔隙变形, 结晶压力, 结晶动力学

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

引用本文:

应赛1，2，周凤玺1，文桃2，曹亚鹏3. 降温过程中孔隙的结晶变形[J]. 岩石力学与工程学报, 2020, 39(S1): 2954-2963.
YING Sai1，2，ZHOU Fengxi1，WEN Tao2，CAO Yapeng3. Deformation of a pore induced by crystallization during cooling process. , 2020, 39(S1): 2954-2963.

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

[12]	CORRENS C W. Growth and dissolution of crystals under linear pressure[J]. Discussions of the Faraday Society，1949，5：267–271.
[3]	DERLUYN H，MOONEN P，CARMELIET J. Deformation and damage due to drying-induced salt crystallization in porous limestone[J]. Journal of the Mechanics and Physics of Solids，2014，63：242–255.
[5]	ESPINOSA R M，FRANKE L，DECKELMANN G. Model for the mechanical stress due to the salt crystallization in porous materials[J]. Construction and Building Materials，2008，22(7)：1 350–1 367.
[13]	EVERETT D H. The thermodynamics of frost damage to porous solids[J]. Transactions of Faraday Society，1961，57(5)：1 541–1 551.
[15]	STEIGER M. Crystal growth in porous materials—II：Influence of crystal size on the crystallization pressure[J]. Journal of Crystal Growth，2005，282(3–4)：470–481.
[7]	SCHERER G W. Crystallization in pores[J]. Cement and Concrete Research，1999，29(8)：1 347–1 358.
[17]	KONIORCZYK M，GAWIN D. Modelling of salt crystallization in building materials with microstructure-Poromechanical approach[J]. Construction and Building Materials，2012，36：860–873.
[16]	WAN X，HU Q，LIAO M. Salt crystallization in cold sulfate saline soil[J]. Cold Regions Science and Technology，2017，137：36–47.
[23]	KONIORCZYK M. Modelling the phase change of salt dissolved in pore water—Equilibrium and non-equilibrium approach[J]. Construction and Building Materials，2010，24(7)：1 119–1 128.
[25]	赵天宇. 内陆寒旱区硫酸盐渍土盐胀特性试验研究[博士学位论文][D]. 兰州：兰州大学，2012.(ZHAO Tianyu. Experimental study on salt heaving properties of inland sulphate saline soil in cold and arid regions[Ph. D. Thesis][D]. Lanzhou：Lanzhou University，2012.(in Chinese))
[27]	杨保存. 南疆盐渍土路基盐冻胀变形特性研究[硕士学位论文][D]. 重庆：重庆大学，2008.(YANG Baocun. Study on salt-frost heave deformation characteristics of saline soil subgrade in southern Xinjiang[M. S. Thesis][D]. Chongqing：Chongqing University，2008.(in Chinese))
[1]	文桃，曹亚鹏，应赛. 多次冻融循环下硫酸盐渍土盐–冻胀特性试验研究[J]. 中外公路，2018，38(2)：57–62.(WEN Tao，CAO Yapeng，YING Sai. Experiment study on the salt-frost heave of sulfate saline soil under freezing and thawing cycles[J]. Journal of China and Foreign Highway，2018，38 (2)：57–62.(in Chinese))
[11]	LAI Y，WU D，ZHANG M. Crystallization deformation of a saline soil during freezing and thawing processes[J]. Applied Thermal Engineering，2017，120：463–473.
[21]	GEORGE W S. Stress from crystallization of salt[J]. Cement and Concrete Research，2004，34(9)：1 613–1 624.
[9]	BECKER G F，DAY A L. Note on the linear force of growing crystals[J]. The Journal of Geology，1916，24(4)：313–333.
[19]	MULLIN J W. Crystallization[M]. London：Butterworth/Heinemann，1993：1–600.
[2]	ESPINOSA R M，FRANKE L，DECKELMANN G. Phase changes of salts in porous materials：Crystallization，hydration and deliquescence[J]. Construction and Building Materials，2008，22(8)：1 758–1 773.
[4]	王菊琳，张屹东，吴玉清，等. 盐水比对壁画酥碱病害产生和发展速率的影响[J]. 表面技术，2017，46(2)：1–7.(WANG Julin，ZHANG Yidong，WU Yuqing，et al. Influence of salt/water ratio on emergence and developing rate of mural disruption[J]. Surface Technology，2017，46(2)：1–7.(in Chinese))
[6]	DESARNAUD J，FRAN?OIS B，SHAHIDZADEH-BONN N. Impact of the kinetics of salt crystallization on stone damage during rewetting/drying and humidity cycling[J]. Journal of Applied Mechanics，2013，80(2)：911.
[10]	TABER S. The growth of crystals under external pressure[J]. American Journal Ofence，1916，41(246)：532–556.
[14]	STEIGER M. Crystal growth in porous materials—I：The crystallization pressure of large crystals[J]. Journal of Crystal Growth，2005，282(3–4)：455–469.
[18]	ESPINOSA R M，FRANKE L，DECKELMANN G. Model for the mechanical stress due to the salt crystallization in porous materials[J]. Construction and Building Materials，2008，22(7)：1 350–1 367.
[20]	MUTAFTSHIEV B. Nucleation theory[M]. Amsterdam：Elsevier，1993：189–247.
[22]	ESPINOSA R M，FRANKE L，DECKELMANN G. Phase changes of salts in porous materials：Crystallization，hydration and deliquescence[J]. Construction and Building Materials，2008，22(8)：1 758–1 773.
[24]	DERLUYN H. Salt transport and crystallization in porous limestone：Neutron-X-ray imaging and poromechanical modeling[Ph. D. Thesis][D]. Brussels：Katholieke Universiteit Leuven，2012.
[26]	高江平，吴家惠. 硫酸盐渍土盐胀特性的单因素影响规律研究[J]. 岩土工程学报，1997，19(1)：39–44.(GAO Jiangping，WU Jiahui. Study on laws of the single factor effect upon heaving properties of the sulphated salty soil[J]. Chinese Journal of Geotechnical Engineering，1997，19(1)：39–44.(in Chinese))
[28]	WU Q，ZHU Y. Experimental studies on salt expansion for coarse grain soil under constant temperature[J]. Cold Regions Science and Technology，2002，34(2)：59–65.
[8]	SCHERER G W. Stress from crystallization of salt[J]. Cement and Concrete Research，2004，34(9)：1 613–1 624.