TY - JOUR
T1 - Mechanical and laser cleaning of spray graffiti paints on a granite subjected to a SO 2 -rich atmosphere
AU - Gomes, Vera
AU - Dionísio, Amélia
AU - Pozo-Antonio, J. Santiago
AU - Rivas, Teresa
AU - Ramil, Alberto
N1 - info:eu-repo/grantAgreement/FCT/5876/147223/PT#
This work is co-funded by Fundacao Calouste Gulbenkian, Portugal (Programa de Estimulo a Investigacao 2016, Grant Number P202710), by Fundacao para Ciencia e Tecnologia, Portugal (Strategic project FCT-UID/ECI/04028/2013) and by the Ministerio de Economia y Competitividad, Spain (Grant Number BIA2014-54186-R). The authors would like to thank Mr. Alberto Pereira from Clinarte S.L., Ph.D. Jorge Feijoo and Ph,D. Ivan de Rosario from University of Vigo for their scientific support. J.S. Pozo-Antonio was supported by a postdoctoral contract with the University of Vigo within the framework of the 2011-2015 Galician Plan for Research. Innovation and Growth (Plan 12C), Spain for 2014 (Grant Number ED481B 2014/101-0).
PY - 2018/11/10
Y1 - 2018/11/10
N2 -
Cleaning effectiveness of four graffiti spray paints artificially aged by SO
2
exposure on granite was evaluated. Two different removal procedures were applied: i) mechanical methods with different micro abrasives (Hydrogommage® – combining action of air, water and micro abrasive-silica or aluminium silicate and IBIX® – combining action of air and micro abrasive-silica or calcium carbonate), and ii) a ns Nd:YVO
4
laser working at 355 nm. It was concluded that the cleaning with mechanical procedures and laser was influenced by the SO
2
exposure. Aged samples were more difficult to clean, suffering higher global colour changes. Hydrogommage® with silica abrasive achieved the best results, due to a combination of a satisfactory paint extraction and low morphological damages induced to the granite.
AB -
Cleaning effectiveness of four graffiti spray paints artificially aged by SO
2
exposure on granite was evaluated. Two different removal procedures were applied: i) mechanical methods with different micro abrasives (Hydrogommage® – combining action of air, water and micro abrasive-silica or aluminium silicate and IBIX® – combining action of air and micro abrasive-silica or calcium carbonate), and ii) a ns Nd:YVO
4
laser working at 355 nm. It was concluded that the cleaning with mechanical procedures and laser was influenced by the SO
2
exposure. Aged samples were more difficult to clean, suffering higher global colour changes. Hydrogommage® with silica abrasive achieved the best results, due to a combination of a satisfactory paint extraction and low morphological damages induced to the granite.
KW - Cleaning effectiveness
KW - Cultural heritage
KW - Granite
KW - Laser cleaning
KW - Mechanical cleaning
KW - SO ageing
KW - Spray graffiti paints
UR - http://www.scopus.com/inward/record.url?scp=85052285296&partnerID=8YFLogxK
U2 - 10.1016/j.conbuildmat.2018.08.130
DO - 10.1016/j.conbuildmat.2018.08.130
M3 - Article
AN - SCOPUS:85052285296
VL - 188
SP - 621
EP - 632
JO - Construction and Building Materials
JF - Construction and Building Materials
SN - 0950-0618
ER -