湿度对盐溶液在壁画地仗中的毛细迁移影响研究

›› 2014, Vol. 299 ›› Issue (2): 459-465.

湿度对盐溶液在壁画地仗中的毛细迁移影响研究

姜啸¹，张虎元¹，严耿升²，王锦芳³

1.兰州大学土木工程与力学学院西部灾害与环境力学教育部重点实验室，兰州 730000； 2.中国水电顾问集团西北勘测设计研究院，西安 710065；3.兰州大学西部环境教育部重点实验室，兰州 730000

收稿日期:2012-11-26 出版日期:2014-02-11 发布日期:2014-02-18
通讯作者: 张虎元，男，1963年生，博士，教授，博士生导师，主要从事岩土工程和文物保护方面的研究工作。E-mail: zhanghuyuan@lzu.edu.cn E-mail:jiangx2011@lzu.cn
作者简介:姜啸，女，1990年生，硕士研究生，主要从事岩土工程及文物保护的研究工作
基金资助:
国家科技支撑计划课题（No. 2013BAK01B00）；古代壁画保护国家文物局重点科研基地开放课题（No. 200806）

Research on effects of humidity on capillary migration of salt solutions in mural plaster

JIANG Xiao¹, ZHANG Hu-yuan¹, YAN Geng-sheng², WANG Jin-fang³

1. Key Laboratory of Mechanics on Western Disaster and Environment in Western China of Ministry of Education, School of Civil Engineering and Mechanics, Lanzhou University, Lanzhou, 730000, China; 2. HydroChina Xibei Engineering Corporation, Xi’an, 710065, China; 3. Key Laboratory of Western China’s Environmental Systems, Ministry of Education, Lanzhou University, Lanzhou, 730000, China

Received:2012-11-26 Online:2014-02-11 Published:2014-02-18

摘要/Abstract

摘要： 盐溶液在地仗中毛细迁移引起的盐分迁移、富集已成为壁画病害发生的重要原因。研究不同湿度条件下盐溶液在模拟地仗中的毛细迁移过程对可溶盐再分布的影响。分析不同湿度条件下毛细上升高度随时间的变化关系，含水率和电导率随高度变化关系，毛细饱和后试样表面变化情况及可溶盐含量随试样高度的分布。试验结果表明，空气相对湿度越低，毛细上升过程中水分向空气中迁移越多，水分难以向上迁移。试样的含水率随高度呈递减趋势，而电导率随试样高度增加而增大。可溶盐在毛细水上升过程中发生结晶分异，毛细前锋以NaCl结晶富集为主，亚前锋以Na2SO4结晶富集为主。其研究结果可以为壁画盐害的防治提供基础科学依据。

关键词: 盐溶液, 壁画地仗, 毛细迁移, 湿度

Abstract: Salt migration and enrichment caused by the capillary migration of the salt solutions have been the important cause of mural deterioration. The soluble salt redistribution which influenced by the capillary migration of salt solutions in mural plaster under different humidities is studied. At the same time, the increase in height of capillary with time, water content and electrical conductivity distribution with height, specimen surface before and after capillary saturation under different environmental humidities, either the content of the soluble solution distributions with height after capillary migration are analyzed. The test results show that, the lower the air relative humidity is, the more water migration to air during the capillary rise is; it is difficult for water to move upward at the same time. The water content of samples with height decreases, but the electrical conductivity of samples with height increases. The crystallization of soluble salt in rising capillary water occurred. NaCl crystallization is enriched in capillary striker, Na2SO4 crystallization is enriched mainly in the second striker. The results of this study can provide a scientific basis for preventing and controlling salt damage of the mural.

Key words: salt solutions, mural plaster, capillary migration, humidity

中图分类号:

TU 412

姜啸，张虎元，严耿升，王锦芳，. 湿度对盐溶液在壁画地仗中的毛细迁移影响研究[J]. , 2014, 299(2): 459-465.

JIANG Xiao , ZHANG Hu-yuan , YAN Geng-sheng , WANG Jin-fang，. Research on effects of humidity on capillary migration of salt solutions in mural plaster[J]. , 2014, 299(2): 459-465.

参考文献

相关文章 15

[1]	陈钒，吴建勋，任松，欧阳汛，王亮，范金洋,. 基于湿度应力场理论的硬石膏岩膨胀试验研究[J]. , 2018, 39(8): 2723-2731.
[2]	周意超，陈从新，刘秀敏，段淑倩，张海娜，夏开宗,. 石膏矿岩水致老化效应试验[J]. , 2018, 39(6): 2124-2130.
[3]	颜荣涛，纪文栋，陈星欣，张芹，韦昌富，. 盐溶液饱和黏土的力学行为模拟[J]. , 2018, 39(2): 546-552.
[4]	夏开宗，陈从新，宋许根，刘秀敏，周意超, . 相对湿度作用下的石膏矿护顶层突变破坏机制分析[J]. , 2018, 39(2): 589-597.
[5]	周云东, 王勇, 黎冰, 徐佳辉, 刘萌成, Ali H Mahfouz, . 气泡混合轻质土试样制备研究[J]. 岩土力学, 2018, 39(12): 4413-4420.
[6]	姚传芹，韦昌富，马田田，陈合龙，陈火东，. 孔隙溶液对膨胀土力学性质影响[J]. , 2017, 38(S2): 116-122.
[7]	马田田，韦昌富，夏晓龙，陈盼，. NaCl溶液对土体冻结特征影响的试验研究[J]. , 2017, 38(7): 1919-1925.
[8]	杜建国，郭士旭，陈沛，郭青林，陈晋央，余尚江,. 莫高窟壁画裂隙萌生特性试验研究[J]. , 2017, 38(1): 19-25.
[9]	项国圣，徐永福，陈涛，姜昊,. 盐溶液中膨润土膨胀变形的分形模型[J]. , 2017, 38(1): 75-80.
[10]	张虎元，姜啸，王锦芳，李秀祥,. 壁画地仗中盐分的毛细输送机制研究[J]. , 2016, 37(1): 1-11.
[11]	丁金华，陈仁朋，童军，龚壁卫,. 基于多场耦合数值分析的膨胀土边坡浅层膨胀变形破坏机制研究[J]. , 2015, 36(S1): 159-168.
[12]	马田田，韦昌富，陈盼，夏晓龙. NaCl溶液对土体持水特性影响的试验研究[J]. , 2015, 36(10): 2831-2836.
[13]	孙德安，刘文捷，吕海波,. 桂林红黏土的土-水特征曲线[J]. , 2014, 35(12): 3345-3351.
[14]	卢正，姚海林，胡梦玲，陈平,. 基于动变形控制法的路基临界高度与湿度关系研究[J]. , 2014, 35(1): 184-188.
[15]	柳志军. 压实方式影响路基湿度场演变规律相似模拟试验研究[J]. , 2013, 34(11): 3141-3144.

Metrics

Viewed

Full text

Abstract

Cited

Shared

Discussed