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Caracterização das argamassas da Muralha Tardo - Romana de Olisipo

Authors: Almeida, Luís Filipe dos Santos de;

Caracterização das argamassas da Muralha Tardo - Romana de Olisipo

Abstract

Under the Integrated Project for Study and Valorization of the "Cerca Velha" (Old Rampart) of Lisbon, Portugal, sponsored by the City Hall of Lisbon and taking place since the year 2009, there were several archaeological excavations done that allowed checking the layout of this defensive equipment back to Roman times (1st century AD and the end of the 3rd to 4th century AD.). These interventions enabled a complete mapping of the late Roman Olisipo’s defensive wall (Roman name given to the city of Lisbon) correlated with the end of the 3rd century to 4th century AD. A characterization of mortars from that large structure was carried out as part of a Master’s degree thesis in Applied Geology awarded by the Faculty of Science, University of Lisbon, in partnership with LNEC, the national civil engineering laboratory. This work resulted in the characterization of those construction materials in order to pursue an interpretation for standard construction technologies and to clarify any sources of raw materials used, as well as to analyze the current status quo by means of construction state of conservation in the collection sites, identifying potential degradation factors. The characterization of historical mortars is a widely studied matter, with multidisciplinary methodological approaches that fits LNEC’s planned research work. The methodology included particle size, mineralogical, thermal, chemical, petrographic, physical, mechanical and microstructural characterizations recommended by that Laboratory. The present work contributed to increase the knowledge of the ancestral techniques in a perspective of solution applications in the context of rehabilitation works, conservation and restoration of historical and architectural heritage.

No âmbito do Projecto Integrado de Estudo e Valorização da “Cerca Velha” de Lisboa, promovido pela Câmara Municipal de Lisboa desde o ano de 2009, foram realizadas várias intervenções arqueológicas que permitiram comprovar que o traçado deste equipamento defensivo remonta à época romana (Séculos I e finais do III – IV d. C.). Na sequência daquelas intervenções, que possibilitaram um levantamento rigoroso da estrutura tardo-romana de Olisipo (denominação romana da actual cidade de Lisboa) de cronologia correlacionável com finais do séc. III – IV d. C., foi realizado um trabalho de caracterização de argamassas daquela estrutura, integrado no curso de mestrado em Geologia Aplicada leccionado na Faculdade de Ciências da Universidade de Lisboa e em parceria com o Laboratório Nacional de Engenharia Civil (LNEC). Deste trabalho resultou a caracterização daqueles materiais construtivos visando a interpretação construtiva tipo-tecnológica, o esclarecimento de eventuais proveniências da matéria-prima utilizada e a análise do actual estado de conservação da estrutura nos locais amostrados, identificando potenciais factores de degradação. A caracterização de argamassas históricas é um tema amplamente estudado, com abordagens metodológicas multidisciplinares que se enquadra nos trabalhos de investigação programada do LNEC. A metodologia utilizada compreendeu as caracterizações granulométrica, mineralógica, térmica, química, petrográfica, física, mecânica e microestrutural, recomendadas por aquele Laboratório. O trabalho contribuiu para o aumento do conhecimento das técnicas ancestrais de construção, numa perspectiva de aplicação de soluções no âmbito de obras de reabilitação, conservação e restauro do património histórico-arquitectónico.

Trabalho de projecto de mestrado, Geologia Aplicada (Geologia de Engenharia), Universidade de Lisboa, Faculdade de Ciências, 2015

Country
Portugal
Related Organizations
Keywords

Agregado, Cal, Argamassa, Caracterização, Muralha, Trabalhos de projecto de mestrado - 2015

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green