000002047 001__ 2047
000002047 005__ 20141118153445.0
000002047 04107 $$acze
000002047 046__ $$k2014-05-20
000002047 100__ $$aMouhoubi, K. 
000002047 24500 $$aDetection of Hygroscopic Salts before the Apparition of Degradation Patterns: Experimental Approach on Limestones using the Stimulated Infrared Thermography

000002047 24630 $$n$$pProceedings of the International Conference on Conservation of Stone and Earthen Architectural Heritage
000002047 260__ $$bThe Graduate School of Cultural Heritage, Kongju National University, Republic of Korea
000002047 506__ $$arestricted
000002047 520__ $$2eng$$aRecent improvements of infrared thermography cameras allow detecting small defects and hygroscopic salts that are present under the surface of building heritage materials. Preliminary laboratory experiments have been conducted and they show that it is possible to detect salted area in a limestone. Thermophysical properties of materials in presence of salts have been studied. The effusivity (b) and thermal diffusivity (a) have been thus characterized according to ways: measurements under an extended flash excitation and measurements on the center of the excited area after stimulation. The results show that these parameters are very sensitive to the presence of salts. It is then possible to detect the crystallization process of hygroscopic salts at its first steps and to localize the crystal germs inside the stone.

000002047 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000002047 653__ $$aHygroscopic salts, Stimulated infrared thermography, Detection, Emissivity, Diffusivity

000002047 7112_ $$aInternational Conference on Conservation of Stone and Earthen Architectural Heritage$$cKongju (KR)$$d2014-05-20$$gICOMOS-ISCS 2014
000002047 720__ $$aMouhoubi, K. $$iBodnar, J.-L. $$iDetalle, V. $$iVallet, J.-M. 
000002047 8560_ $$ffischerc@itam.cas.cz
000002047 8564_ $$s907182$$uhttp://invenio.itam.cas.cz/record/2047/files/p40.pdf$$y
             Original version of the author's contribution as presented on CD, 263.
            
000002047 962__ $$r2005
000002047 980__ $$aPAPER