PRODUTOS DO INTEMPERISMO E AVALIAÇÃO DO NÍVEL DE DETERIORAÇÃO EM ROCHAS ORNAMENTAIS DA FORTALEZA DE SANTA CRUZ (NITERÓI, RJ)

dc.creator	André Luiz Carvalho da Silva
dc.creator	Maria Augusta Martins da Silva
dc.creator	José Antônio Baptista Neto
dc.creator	Bernard Smith
dc.creator	John Mc Alister
dc.date	2013-02-01T00:00:00Z
dc.date.accessioned	2015-07-20T22:14:18Z
dc.date.available	2015-07-20T22:14:18Z
dc.identifier	1676-1995
dc.identifier	1980-4490
dc.identifier	https://doaj.org/article/d1a7dafaaea9474b9bcc9ea3cf3adbf4
dc.identifier.uri	http://evidence.thinkportal.org/handle/123456789/16746
dc.description	<strong>RESUMO </strong> A Fortaleza de Santa Cruz, magnífico exemplo da arquitetura dos tempos da chegada dos europeus ao nosso continente, começou a ser construída por volta de 1555 na entrada da Baía de Guanabara (Niterói, RJ) com blocos de gnaisse facoidal local. De modo geral, rochas empregadas em construções em ambientes litorâneos e urbanos são expostas ao sal marinho, bem como, aos poluentes CO2, S e N e, em decorrência disso, os processos relacionados ao intemperismo podem causar danos consideráveis a essas construções. Na Fortaleza de Santa Cruz foram identificados diversos tipos de crostas (negra, de sal, orgânica, “flowstones”) e estalactites como produtos do intemperismo. A intensidade dos processos é diferente nos três pavimentos que compõem a Fortaleza, levando a níveis distintos de deterioração dos blocos de rocha, em função da circulação, teor de umidade e de sal no ar em cada pavimento. <br /><strong>Palavras-chaves:</strong> intemperismo; rochas ornamentais; crosta negra; dissolução.<br /><br /><strong>ABSTRACT </strong> The Santa Cruz Fort, a magnificent example of architecture at the time of arrival of the Europeans to our continent, began to be constructed at about 1555 at the entrance of the Guanabara Bay (Niterói, RJ) with local blocks of augen gnaiss. In general, rocks employed in constructions in coastal and urban environments are exposed to sea derived salts and pollutants such as CO2, S and N and, as consequence of that, weathering related processes can cause considerable damage to these constructions. In the Santa Cruz Fort, various types of crusts (black, salt, organic, flowstones) and stalactites have been identified as weathering products. The intensity of such processes is different in the Fort’s three main floors and that leads to distinct deteriorations levels of the blocks of rock in each floor, a function of air circulation, humidity and salt content.<br /><strong>Keywords:</strong> Weathering; building stones; black crust; dissolution. <br />
dc.language	Portuguese
dc.language	Spanish
dc.publisher	UERJ - FACULDADE DE FORMAÇÃO DE PROFESSORES
dc.relation	http://www.e-publicacoes.uerj.br/index.php/tamoios/article/view/5084
dc.relation	https://doaj.org/toc/1676-1995
dc.relation	https://doaj.org/toc/1980-4490
dc.source	Revista Tamoios, Vol 8, Iss 2 (2013)
dc.subject	Special aspects of education
dc.subject	LC8-6691
dc.subject	Education
dc.subject	L
dc.subject	DOAJ:Education
dc.subject	DOAJ:Social Sciences
dc.subject	Geography (General)
dc.subject	G1-922
dc.subject	Geography. Anthropology. Recreation
dc.subject	G
dc.subject	DOAJ:Geography
dc.subject	DOAJ:Earth and Environmental Sciences
dc.subject	Special aspects of education
dc.subject	LC8-6691
dc.subject	Education
dc.subject	L
dc.subject	DOAJ:Education
dc.subject	DOAJ:Social Sciences
dc.subject	Geography (General)
dc.subject	G1-922
dc.subject	Geography. Anthropology. Recreation
dc.subject	G
dc.subject	DOAJ:Geography
dc.subject	DOAJ:Earth and Environmental Sciences
dc.subject	Special aspects of education
dc.subject	LC8-6691
dc.subject	Education
dc.subject	L
dc.subject	Geography (General)
dc.subject	G1-922
dc.subject	Geography. Anthropology. Recreation
dc.subject	G
dc.subject	Special aspects of education
dc.subject	LC8-6691
dc.subject	Education
dc.subject	L
dc.subject	Geography (General)
dc.subject	G1-922
dc.subject	Geography. Anthropology. Recreation
dc.subject	G
dc.subject	Special aspects of education
dc.subject	LC8-6691
dc.subject	Education
dc.subject	L
dc.subject	Geography (General)
dc.subject	G1-922
dc.subject	Geography. Anthropology. Recreation
dc.subject	G
dc.title	PRODUTOS DO INTEMPERISMO E AVALIAÇÃO DO NÍVEL DE DETERIORAÇÃO EM ROCHAS ORNAMENTAIS DA FORTALEZA DE SANTA CRUZ (NITERÓI, RJ)
dc.type	article