Pathology of Building Materials in Historic Buildings. Relationship Between Laboratory Testing and Infrared Thermography

Study of historic buildings requires a pathology analysis of the construction materials used in order to define their conservation state. Usually we can find capillary moisture, salt crystalli-zation or density differences by deterioration. Sometimes this issue is carried out by destructive testing which determine materials’ physical and chemical characteristics. However, they are unfavorable regarding the building’s integrity, and they are sometimes difficult to implement. This paper presents a technique using infrared thermography to analyze the existing pathology and has the advantage of being able to diagnose inaccessible areas in buildings. The results obtained by this technique have been compared with those obtained in the laboratory, in order to validate this study and thus to extrapolate the methodology to other buildings and materials.

[1]  J. Campbell.  Introduction to remote sensing , 1987 .

[2]  Eric Rirsch,et al.  Rising damp in masonry walls and the importance of mortar properties , 2010 .

[3]  P. L. López,et al.  Caracterización del sistema poroso y de su influencia en el deterioro por cristalización de sales en calizas y dolomías explotadas en Abanto (Zaragoza, España) , 2010 .

[4]  Maria Danese,et al.  INVESTIGATING MATERIAL DECAY OF HISTORIC BUILDINGS USING VISUAL ANALYTICS WITH MULTI‐TEMPORAL INFRARED THERMOGRAPHIC DATA , 2009 .

[5]  J. Ordáz,et al.  Glosario de términos relacionados con el deterioro de las piedras de construcción , 1988 .

[6]  J. L. Lerma,et al.  Multitemporal thermal analysis to detect moisture on a building façade , 2011 .

[7]  George W. Scherer,et al.  Theory of Drying , 1990 .

[8]  Stefano Paoloni,et al.  Active infrared thermography applied to the investigation of art and historic artefacts , 2011 .

[9]  P. Rubio de Hita,et al.  Inspección mediante técnicas no destructivas de un edificio histórico: oratorio San Felipe Neri (Cádiz) , 2011 .

[10]  Luigia Binda,et al.  Nondestructive Testing Evaluation of Drying Process in Flooded Full-Scale Masonry Walls , 2010 .

[11]  Alan C. Oliver,et al.  Dampness in Buildings , 1997 .

[12]  Marc Prat,et al.  Pore Network Simulation of Evaporation of a Binary Liquid from a Capillary Porous Medium , 2000 .

[13]  Marco D’Orazio,et al.  A Methodology for the Evaluation of Hygrometric and Mechanical Properties of Consolidated Stones , 2016 .

[14]  J. Frutos,et al.  A mathematical model simulating the evaporation processes in building materials: Experimental checking through infrared thermography , 1996 .

[15]  Claude Hammecker,et al.  The importance of the petrophysical properties and external factors in the stone decay on monuments , 1995 .

[16]  Jan Válek,et al.  Nondestructive Investigation of Wet Building Material: Multimethodical Approach , 2010 .

[17]  W. D. Hoff,et al.  Water Transport in Brick, Stone and Concrete , 2002 .

[18]  I. Cañas Guerrero,et al.  Thermal–physical aspects of materials used for the construction of rural buildings in Soria (Spain) , 2005 .

[19]  Carmen Rodríguez-Liñán,et al.  Análisis sobre la influencia de la densidad en la termografía de infrarrojos y el alcance de esta técnica en la detección de defectos internos en la madera , 2012 .

[20]  Rafael Fort González,et al.  Degradación del patrimonio , 1996 .

[21]  Eduardo M. Sebastián Pardo.  13. Curso de Técnicas de diagnóstico aplicadas a la conservación de los materiales de construcción en los edificios históricos , 1993 .

[22]  G. Carlomagno,et al.  The use of infrared thermography for materials characterization , 2004 .