RT Conference Proceedings
T1 Laser removal of Protective treatments on limestone
A1 Gómez Heras, Miguel
A1 Álvarez de Buergo, Mónica
A1 Rebollar, Esther
A1 Oujja, Mohamed
A1 Fort, Rafael
A1 Castillejo, Marta
A2 Dickmann, Klaus
A2 Fotakis, Costas
A2 Asmus, John F.
AB This work presents an investigation of the laser removal of polymeric materials acting as consolidants and water-repellents on limestone used on buildings of architectural and artistic value. The removal of the consolidant Paraloid B-72 and the water-repellent product Tegosivin HL-100, applied on samples of Colmenarand Bateig limestone, was studied as a function of the laser wavelength, by using the four harmonics of a Q-switched Nd:YAG laser (1064, 532, 355 and 266 nm). Elimination of the coatings and subsequent surface modifications were monitored through colorimetry, roughness measurements and scanning electron microscopy (SEM). The fundamental laser radiation was effective in removing the treatments, although thermal alteration processes were induced on the calcite crystals of the limestone. The best results were obtained by irradiation in the near UV at 355 nm.
SN 978-3-540-22996-4
SN 0930-8989
YR 2005
FD 2005
LK https://hdl.handle.net/20.500.14352/126430
UL https://hdl.handle.net/20.500.14352/126430
LA eng
NO Gómez-Heras, M., Rebollar, E., Alvarez De Buergo, M., Oujja, M., Fort, R., Castillejo, M., 2005. Laser Removal of Protective Treatments on Limestone, in: Dickmann, K., Fotakis, C., Asmus, J.F. (Eds.), Lasers in the Conservation of Artworks. Springer-Verlag, Berlin/Heidelberg, pp. 149–155. https://doi.org/10.1007/3-540-27176-7_19
NO Ministerio de Ciencia y Tecnología (España)
NO Comunidad de Madrid
DS Docta Complutense
RD 1 dic 2025