Transport of Infrared Atmospheric Radiation最新文献

英文中文

1. Introduction 1. 介绍

Transport of Infrared Atmospheric Radiation

Pub Date : 2018-06-11 DOI: 10.1515/9783110589801-021

A. Naillon, P. Joseph, M. Prat

The stress generation on pore walls due to the growth of a sodium chloride crystal in a confined aqueous solution is studied from evaporation experiments in microfluidic channels in conjunction with numerical computations of crystal growth. The study indicates that the stress build-up on the pore walls as the result of the crystal growth is a highly transient process taking place over a very short period of time (in less than 1s in our experiments). The analysis makes clear that what matters for the stress generation is not the maximum supersaturation at the onset of the crystal growth but the supersaturation at the interface between the solution and the crystal when the latter is about to be confined between the pore walls. It is shown that the stress generation can be characterized with a simple stress diagram involving the pore aspect ratio and the Damkhöler number characterizing the competition between the precipitation reaction kinetics and the ion transport towards the growing crystal. This opens up the route for a better understanding of the damage of porous materials induced by salt crystallization, an important issue in earth sciences, reservoir engineering and civil engineering. PACS numbers: 47.56.+r, 61.05.cp Salt crystallization in pores causes damage in porous materials, a major issue in relation with building durability and cultural heritage conservation [1-4], underground structures [5], road [6] and geotechnical engineering [7]. A better understanding of the associated stress is also important in relation with geomorphology [8], concrete science [9] or the surface heave phenomenon of granular materials [10]. The fact that a growing crystal can generate stress has been known for more than a century [11], [12]. The key concept for the analysis of the stress generation is the crystallization pressure Pc [13-15]. Corrections to the original expression [14] taking account the water activities and the crystal size have been developed, e.g. [16], [17], so that the current expression for sufficiently large crystals of sodium chloride (>1μm) reads,

通过微流控通道的蒸发实验，结合晶体生长的数值计算，研究了氯化钠晶体在密闭水溶液中生长时孔壁上产生的应力。研究表明，由于晶体生长而在孔壁上积聚的应力是一个高度瞬态的过程，发生在很短的时间内(在我们的实验中不到15秒)。分析表明，对应力产生起作用的不是晶体生长开始时的最大过饱和，而是晶体即将被限制在孔壁之间时溶液与晶体界面处的过饱和。结果表明，应力的产生可以用一个简单的应力图来表征，该应力图涉及孔隙长径比和表征沉淀反应动力学和离子向生长晶体转移之间竞争的Damkhöler数。这为更好地理解盐结晶引起的多孔材料损伤开辟了道路，这是地球科学、油藏工程和土木工程中的一个重要问题。PACS数字:47.56。+ r, 61.05。cp盐在孔隙中的结晶会对多孔材料造成破坏，这是与建筑耐久性和文化遗产保护[1-4]、地下结构[5]、道路[6]和岩土工程[7]相关的一个主要问题。更好地理解相关应力对于地貌学[8]、混凝土科学[9]或颗粒材料表面隆起现象[10]也很重要。一个多世纪以来，人们已经知道晶体生长会产生应力[11]，[12]。分析应力产生的关键概念是结晶压力Pc[13-15]。考虑到水活度和晶体大小，对原始表达式[14]进行了修正，例如[16]，[17]，因此，对于足够大的氯化钠晶体(>1μm)，当前的表达式为:

{"title":"1. Introduction","authors":"A. Naillon, P. Joseph, M. Prat","doi":"10.1515/9783110589801-021","DOIUrl":"https://doi.org/10.1515/9783110589801-021","url":null,"abstract":"The stress generation on pore walls due to the growth of a sodium chloride crystal in a confined aqueous solution is studied from evaporation experiments in microfluidic channels in conjunction with numerical computations of crystal growth. The study indicates that the stress build-up on the pore walls as the result of the crystal growth is a highly transient process taking place over a very short period of time (in less than 1s in our experiments). The analysis makes clear that what matters for the stress generation is not the maximum supersaturation at the onset of the crystal growth but the supersaturation at the interface between the solution and the crystal when the latter is about to be confined between the pore walls. It is shown that the stress generation can be characterized with a simple stress diagram involving the pore aspect ratio and the Damkhöler number characterizing the competition between the precipitation reaction kinetics and the ion transport towards the growing crystal. This opens up the route for a better understanding of the damage of porous materials induced by salt crystallization, an important issue in earth sciences, reservoir engineering and civil engineering. PACS numbers: 47.56.+r, 61.05.cp Salt crystallization in pores causes damage in porous materials, a major issue in relation with building durability and cultural heritage conservation [1-4], underground structures [5], road [6] and geotechnical engineering [7]. A better understanding of the associated stress is also important in relation with geomorphology [8], concrete science [9] or the surface heave phenomenon of granular materials [10]. The fact that a growing crystal can generate stress has been known for more than a century [11], [12]. The key concept for the analysis of the stress generation is the crystallization pressure Pc [13-15]. Corrections to the original expression [14] taking account the water activities and the crystal size have been developed, e.g. [16], [17], so that the current expression for sufficiently large crystals of sodium chloride (>1μm) reads,","PeriodicalId":308767,"journal":{"name":"Transport of Infrared Atmospheric Radiation","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125957927","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

首页上一页

类型

全部化学•材料生命科学医学物理工程技术环境•农林材料科学地球科学法学管理学化学环境科学与生态学计算机科学教育学经济学农林科学人文科学生物学数学物理与天体物理心理学综合性期刊其他工业工程理学历史学农学文学信息工程

数据库

全部 ACS Publications Elsevier ieeexplore Springer The Royal Society of Chemistry Wiley

期刊

Transport of Infrared Atmospheric Radiation

全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.

﹀