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Caracterização de Argamassas Romanas do Sítio Arqueológico do Creiro, Arrábida
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Com o objetivo de conservar o património arquitetónico, tem se realizado intervenções nestas edificações. Mas, nem sempre, estas intervenções têm-se mostrado eficientes, no sentido de preservar toda originalidade da edificação.
Para realizar intervenções eficientes é necessário assegurar compatibilidade entre os materiais, para isso, também é necessário obter informações sobre as características dos materiais.
O sítio arqueológico do Creiro, construído provavelmente entre o século I a.C. e o século V d.C., está localizado na Serra da Arrábia, Setúbal, e é um património edificado. Neste procedeu-se uma inspeção visual do sítio arqueológico, com a realização de ensaios não destrutivos in situ e recolha de amostras de reboco e amostras de betão Romano para ensaios laboratoriais de caracterização física, mecânica, química e mineralógica.
São descritos e identificados locais onde ocorreu a recolha de amostras e os locais onde foram realizados os ensaios in situ. Apresenta-se a metodologia e procedimentos experimentais utilizados neste estudo, e apresenta-se os resultados da campanha experimental, juntamente com discussão destes resultados.
Os resultados revelam diferentes tipos de materiais na construção do sítio arqueológico do Creiro, principalmente com argamassas à base de cal aérea com diferentes traços. Os resultados dos ensaios in situ indicam boas características de resistência mecânica superficial. Os ensaios fisíco-mecânicos indicaram elevados valores de resistências superficiais, e comportamentos distintos em contato com água. Os ensaios químicos e mineralógicos indicam que os materiais constituintes possuem dosagens de ligante variáveis entre os locais estudados.
Os resultados que foram obtidos e a sua análise possibilitou avaliar a constituição dos materiais e as características gerais. Considera-se ter contribuído para suportar futuras intervenções.
With the aim of preserving the architectural heritage, interventions have been made in these buildings. But, not always, these interventions have been efficient, in the sense of preserving all the originality of the building. To carry out efficient interventions it is necessary to ensure compatibility between the materials, for this, it is also necessary to obtain information on the characteristics of the materials. The archaeological site of Creiro was probably built between the 1st century BC and the 5rd century AD, it is in Serra da Arrábia, Setúbal, and is a built heritage. A visual inspection of the archaeological site was carried out, with nondestructive tests in situ and the collection of plaster and Roman concrete samples for laboratory tests of physical, mechanical, chemical, and mineralogical characterization. The places where samples were taken and the place where in situ tests were performed are described. The methodology and experimental procedures used in this study are presented, as well as the results of the experimental campaign. The results reveal different types of materials in the construction of the Creiro archaeological site, mainly with aerial lime mortars with different traces. The results of in situ tests indicate good characteristics of surface mechanical resistance. The physical-mechanical tests indicated high values of surface resistance, and distinct behavior in contact with water. The chemical and mineralogical tests indicate that the constituent materials have variable binder dosages between the studied sites. The use of materials of diverse composition was verified, the results that were obtained and their analysis made it possible to evaluate the constitution of the materials and the general characteristics. It is considered to have contributed to support future interventions.
With the aim of preserving the architectural heritage, interventions have been made in these buildings. But, not always, these interventions have been efficient, in the sense of preserving all the originality of the building. To carry out efficient interventions it is necessary to ensure compatibility between the materials, for this, it is also necessary to obtain information on the characteristics of the materials. The archaeological site of Creiro was probably built between the 1st century BC and the 5rd century AD, it is in Serra da Arrábia, Setúbal, and is a built heritage. A visual inspection of the archaeological site was carried out, with nondestructive tests in situ and the collection of plaster and Roman concrete samples for laboratory tests of physical, mechanical, chemical, and mineralogical characterization. The places where samples were taken and the place where in situ tests were performed are described. The methodology and experimental procedures used in this study are presented, as well as the results of the experimental campaign. The results reveal different types of materials in the construction of the Creiro archaeological site, mainly with aerial lime mortars with different traces. The results of in situ tests indicate good characteristics of surface mechanical resistance. The physical-mechanical tests indicated high values of surface resistance, and distinct behavior in contact with water. The chemical and mineralogical tests indicate that the constituent materials have variable binder dosages between the studied sites. The use of materials of diverse composition was verified, the results that were obtained and their analysis made it possible to evaluate the constitution of the materials and the general characteristics. It is considered to have contributed to support future interventions.
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sítio arqueológico Creiro cal argamassa caracterização