Abstract
The current study presents one of the dielectric methods, reflection of the microwaves from material, used for diagnosis of moisture content of massive dolostone walls in Estonian medieval churches. Cold and humid climate, porous materials, absence of rainwater pipes, absence of waterproof layers avoiding rising damp leads to moisture damages in massive walls. The problem is relatively complex and cannot be modeled easily due to inhomogeneity and complex shapes of walls. Therefore, main tool for diagnostics is determination of the distribution of moisture in walls and its change over the time by moisture content measurements. The microwave method for determination of moisture content in massive walls is nondestructive and therefore very suitable for the diagnostics of moisture problems in buildings of national heritage importance. Graphically presented results are easily readable even for a nonspecialist and expedite significantly analysis of problem. Measurements of moisture content of walls in medieval churches with different measuring heads during different seasons were carried out over a 10 year period. Seasonal and long period changes of moisture content were analyzed.
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Acknowledgments
The research has been conducted as part of the projects IUT1-15 “Nearly-zero energy solutions and their implementation on deep renovation of buildings” financed by Estonian Research Council and utilizes the measurement results from projects “Sustainable Management of Historic Rural Churches in the Baltic Sea Region” of Central Baltic IVA Programme 2007–2013 and “Damp and salt damages of stone walls of Estonian churches” financed by National Heritage Board of Estonia.
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Kurik, L., Kalamees, T., Kallavus, U. (2016). Diagnosis of Moisture Movements in Massive Dolostone Walls of Medieval Churches. In: Delgado, J. (eds) Recent Developments in Building Diagnosis Techniques. Building Pathology and Rehabilitation, vol 5. Springer, Singapore. https://doi.org/10.1007/978-981-10-0466-7_5
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DOI: https://doi.org/10.1007/978-981-10-0466-7_5
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