Premium
Chemie in der Freskomalerei: Kunst, Computer, Chemie
Author(s) -
Weissenhorn Rudolf G.
Publication year - 2002
Publication title -
chemie in unserer zeit
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.217
H-Index - 24
eISSN - 1521-3781
pISSN - 0009-2851
DOI - 10.1002/1521-3781(200210)36:5<310::aid-ciuz310>3.0.co;2-p
Subject(s) - fresco , lime , painting , art , chemistry , mineralogy , materials science , metallurgy , visual arts
Prehistoric cave paintings have been conserved for about 15000 to 20000 thousand years. As modern investigations have shown the applied pigments are covered with a surface film of crystallized lime.This is the principle used when fresco‐painting. The pigments are painted on freshly applied, wet lime‐water walls or ceilings. During the process of ripening carbon dioxide is absorbed from atmosphere. Lime mortar is hardening, the pigments dry with the plaster to become a permanent part of brickwork. Though fresco buono (= true fresco)is the most durable technique it depends sensitively on processes of acid‐base‐equilibria. Thus, fresco‐paintings are „in dialogue” with environmental conditions for all times. The physico‐chemical principles of fresco‐painting are discussed and demonstrated.