Preventing salt damage in porous materials
Preventing salt damage in porous materials
复制标题
防止多孔材料的盐害
DOI：
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发表时间：
1994
期刊：
影响因子：
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通讯作者：
P. Brimblecombe
中科院分区：
文献类型：
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作者：
C. Price;P. Brimblecombe
通过适当控制环境相对湿度，可以防止多孔材料中的盐损害。结晶和水合作用仅在特定的相对湿度下发生，通过保持环境相对湿度高于或低于这些临界值可以防止损坏。虽然单盐的临界相对湿度是众所周知的，但盐混合物的行为更为复杂。作者研究了一些有关从含有一种以上盐的溶液中结晶的原理。他们使用计算机程序来计算与任何给定的混合盐溶液平衡的空气的相对湿度，并表明结晶不会在每种组分盐的平衡相对湿度下发生，而是在相对湿度范围内发生。被动保护的影响进行了讨论，使用一些例子，表现出一些意想不到的功能。
Salt damage in porous materials may be prevented by appropriate control of the ambient relative humidity. Crystallization and hydration occur only at particular relative humidities, and damage can be prevented by keeping the ambient relative humidity above or below these critical values. While the critical relative humidities for single salts are well known, the behavior of salt mixtures is more complex. The authors examine some of the principles concerning crystallization from solutions containing more than one salt. They use a computer program to calculate the relative humidity of air in equilibrium with any given mixed salt solution and show that crystallization does not occur at the equilibrium relative humidity of each component salt, but across a range of relative humidities. The implications for passive conservation are discussed, using a number of examples which demonstrate some unexpected features.