Moisture content of natural stone: static and dynamic equilibrium with atmospheric humidity
Moisture content of natural stone: static and dynamic equilibrium with atmospheric humidity
复制标题
DOI：
10.1007/s00254-004-1040-1
复制
发表时间：
2004-08-01
期刊：
影响因子：
--
通讯作者：
Mirwald, PW
中科院分区：
文献类型：
--
作者：
Franzen, C;Mirwald, PW
在石材的吸湿特性中，吸附行为至关重要，因为所涉及的过程是永久性的。报告了通过标准技术和新工具对六种不同的建筑石材进行静态吸附实验的新结果。此外，还提供了湿度连续变化下动态吸附行为的示例。对于静态平衡吸附测量，绘制了与石头类型密切相关的孔隙特性，例如比内表面、孔隙体积、孔径分布以及毛细管水吸收和水饱和度。不同数据的比较使我们能够检索对风化过程至关重要的材料特征之间的相关性。正如动态吸附实验所示，即使湿度变化很小，吸附-解吸过程也会自发响应。对材料施加永久的“呼吸”过程。
Among hygric properties of stone material, the sorption behaviour is of essential importance because of the permanence of the processes involved. New results from static sorption experiments performed by standard techniques and by a new tool are reported for six different building stones. Furthermore, an example of dynamic sorption behaviour under continuously changing humidity is presented. For the static equilibrium sorption measurements a close relation to the stone type, its pore properties, such as specific inner surface, pore volume, pore size distribution as well as capillary water uptake and water saturation, is drawn. The comparison of the different data allows us to retrieve correlations between material features that are crucial for weathering processes. The sorption-desorption processes respond spontaneously on even small humidity changes as shown by the dynamic sorption experiment. A permanent 'breathing'-process of the material is imposed.