Investigating the effects of humidity and salt crystallisation on medieval masonry

被引：40

作者：

Watt, D ^{[1
]}

Colston, B ^{[1
]}

机构：

[1] De Montfort Univ, Ctr Conservat Studies, Leicester LE1 9BH, Leics, England

来源：

BUILDING AND ENVIRONMENT | 2000年 / 35卷 / 08期

关键词：

environmental monitoring; equilibrium relative humidity; hygroscopicity; salt analysis; stone decay;

D O I：

10.1016/S0360-1323(00)00015-9

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

An investigation of the effects of humidity and salt crystallisation on medieval masonry has been undertaken at the parish church of Walpole St Andrew, Norfolk? with the intention of establishing a relationship between changes in environmental conditions and levels of stone decay. Masonry within the church has been contaminated with sodium chloride salts, which are undergoing cycles of crystallisation/dissolution in response to fluctuations in relative humidity corresponding to the equilibrium relative humidity of the salt. The effects of these cycles have been determined by a combination of gravimetric analysis, ion chromatography, and qualitative assessment of deposited material. Appropriate remedial action, based on a combination of desalination techniques and environmental control, is put forward for discussion. (C) 2000 Elsevier Science Ltd. All rights reserved.

引用

页码：737 / 749

页数：13