Water Transport Monitoring in Calcium Carbonate Stones by Photoacoustic Spectroscopy

被引：10
作者：
May-Crespo, J. [1 ]
Martinez-Torres, P. [1 ]
Alvarado-Gil, J. J. [1 ]
Quintana, P. [1 ]
Ordonez-Miranda, J. [1 ]
机构：
[1] CINVESTAV, Unidad Merida, Dept Appl Phys, Merida 97310, Yucatan, Mexico
来源：
INTERNATIONAL JOURNAL OF THERMOPHYSICS | 2010年 / 31卷 / 4-5期
关键词：
Calcium carbonate stones; Photoacoustic spectroscopy; Water diffusion; X-ray diffraction; THERMAL-PROPERTIES; EVAPORATION; DIFFUSION; POROSITY; LIQUIDS; SURFACE;
D O I：
10.1007/s10765-010-0734-8
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Calcium carbonate is the most abundant inorganic material, and it was used to build the ancient Mayan monuments in the peninsula of Yucatan, M,xico. One of the most important challenges that these structures have to confront is related to water and its transport inside the stone that induces serious deterioration. In this study, the photoacoustic (PA) technique is used to monitor the water permeability of two kinds of solid and compacted powdered stones. The analysis of water permeability in stones is performed using a modified Rosencwaig PA cell. When the stones are in contact with the water reservoir, the PA signal amplitude is observed to decay gradually due to the progressive wetting of the sample. Based on this type of experiment, the water diffusion coefficients as well as the time evolution of the thermal effusivity are obtained.
引用
收藏
页码：1027 / 1036
页数：10
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