| Texto completo | |
| Autor(es): |
Grossi, Danielle
[1]
;
Del Lama, Eliane Aparecida
[1]
;
Garcia-Talegon, Jacinta
[2]
;
Inigo, Adolfo Carlos
[3]
;
Vicente-Tavera, Santiago
[4]
Número total de Autores: 5
|
| Afiliação do(s) autor(es): | [1] Univ Sao Paulo, Inst Geociencias, Rua Lago 562, BR-05508080 Sao Paulo - Brazil
[2] Univ Salamanca, Fac Ciencias, Dpto Geol, E-37008 Salamanca - Spain
[3] Inst Recursos Nat & Agrobiol Salamanca IRNASA CSI, Salamanca 37008 - Spain
[4] Univ Salamanca, Fac Econ, Dpto Estadist, E-37008 Salamanca - Spain
Número total de Afiliações: 4
|
| Tipo de documento: | Artigo Científico |
| Fonte: | INTERNATIONAL JOURNAL OF CONSERVATION SCIENCE; v. 6, n. 3, p. 313-322, JUL-SEP 2015. |
| Citações Web of Science: | 13 |
| Resumo | |
Itaquera Granite, as a building stone material, was widely used in the early 20th centztly for the construction of buildings and monuments in the centre of the city of Sao Paulo, Brazil. The color variation of the Itaquera Granite of the Ramos de Azevedo Monument was monitored for two years and these data were compared with those obtained for fresh stone originated from a historic quarry. The oxidation of iron-rich minerals present in this granite, coupled with pollution (high levels of 03), biological colonization, leaching of bronze, and the dissolution and reprecipitation of mortar, causes calorimetric changes in the stone. Measurements were also performed on zones of the monument with pathologies. Two statistical Canonical Biplot analyses were made on the data of chromatic coordinates monitored (L{*}, a{*}, b{*}, C{*} and H{*}): orientation/year and orientation/pathologies. The results obtained for the chromatic variation in the monzunent are primarily related to yellowing caused by deposition of atmospheric pollutants and weathering of iron-rich minerals. (AU) | |
| Processo FAPESP: | 09/02519-8 - A mineralogia aplicada ao estudo da herança cultural |
| Beneficiário: | Eliane Aparecida Del Lama |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |
| Processo FAPESP: | 11/03728-0 - Análise do estado de conservação do monumento a Ramos de Azevedo com utilização de métodos não destrutivos |
| Beneficiário: | Danielle Grossi |
| Modalidade de apoio: | Bolsas no Brasil - Mestrado |