Departamento de Materiais: Recent submissions

Now showing items 561-580 of 770

A conservação do património arquitectónico em Portugal no final do século XX. Será legítimo invocar um “efeito WMF”?

Delgado Rodrigues, J. (Laboratório Nacional de Engenharia Civil (LNEC), 2011-11-25)

A última década do sec. XX assistiu a modificações relevantes na prática das intervenções de conservação do património arquitectónico. A melhoria na formação profissional começou a sentir-se por essa altura, fruto de novas ...
The Effect of Water on the Durability of Granitic Materials Consolidated with Ethyl Silicates

Costa, D.; Delgado Rodrigues, J. (Canadian Conservation Institute, 2011-10)

The action of water on granitic materials consolidated with ethyl silicates was investigated. Tests were performed in the laboratory and involved three types of actions: cycles of temperature and humidity, long-term water ...
Physical-chemical characterization of historical Portuguese tiles

Morais Pereira, S.; Coentro, S.; Santos Silva, A.; Muralha, S.; Mimoso, J. (9º Congresso Ibérico de Arqueometria (CIA-IX), 2011-10-26)

A group of Portuguese tiles from the 17th century with manufacturing defects and several forms of decay were characterized as to chemical and mineralogical composition and physical properties of the glaze and ceramic body. ...
Fine sepiolite addition to air lime-metakaolin mortars

Andrejkovicová, S.; Ferraz, E.; Velosa, A.; Santos Silva, A.; Rocha, F. (Mineralogical Society, 2011-12-01)

Lime-based mortars with admixtures of metakaolin (10,20 and 30 wt.%) and fine sepiolite (5 wt.%) were prepared with the aim of facilitating their use as repair mortars in low humidity conditions. The mechanical properties ...
Water resistance of intumescent coatings for fire protection of steel structures

Silva, H. M.; Cabral-Fonseca, S.; Rodrigues, M. P. (2011-03)

This work aims to study the water resistance of intumescent coatings used for protection of steel structures. The vulnerability of the flame retardant system to water can compromise the performance of the coating due to ...
Rehabilitation of timber structures. Novel test method to assess the durability of bonded-in rod connections

Custódio, J.; Broughton, J.; Cruz, H. (Springer, 2012-01)

Rehabilitation/restoration systems involving bonded-in rods represent an efficient alternative method for the repair and/or reinforcement of structural timber members. However, in spite of their advantages, their use is ...
Desempenho de Revestimentos Intumescentes em Ambientes de Elevada Humidade

Silva, H. M.; Rodrigues, M. P.; Cabral-Fonseca, S. (LNEG, 2011)

Com o objectivo de avaliar a influência do contacto com a água, no desempenho dos revestimentos intumescentes usados na protecção ao fogo de estruturas de aço, procedeu-se à sua exposição a diferentes condições de humidade. ...
Estudos microestruturais de amostras de argamassa, betão e agregados - Projecto PIP LNEC 2009-2012 “Materiais com interesse histórico. Durabilidade e caracterização”

Menezes, P.; Santos Silva, A.; Menezes, A. P. (LNEC, 2011-11)
Comportamento e aplicação de materiais plásticos - Normalização internacional e europeia aplicável a tubagem de materiais plásticos actualização de Setembro de 2011

Real, L. P. (LNEC, 2011-11)

Este relatório contém o conjunto de todas as normas EN e ISO referentes a sistemas de tubagem em material plástico, organizadas por aplicação, em vigor à data de Setembro de 2011.
Weathering resistance of the colour of water based coatings for architectural use

Rodrigues, M. P. (2011-09)
Sobre a degradação física dos azulejos de fachada em Lisboa

Mimoso, J.; Morais Pereira, S. (LNEC, 2011-09)

Este Relatório contém os resultados de um estudo levado a cabo pelo LNEC sobre a degradação do património azulejar urbano da Cidade de Lisboa. Inclui uma sistematização das formas de degradação dos azulejos de fachada ...
The colors and techniques of 17th century Portuguese azulejos: a multi-analytical study

Coentro, S.; Muralha, S.; Lima, A.; Santos Silva, A.; Pais, A.; Mimoso, J. (Microscopy & Microanalysis Society of America, 2011-08-07)

Azulejos (ceramic glazed tiles) are the most important form of classical decorative art in Portugal. They have been decorating interior and exterior walls of public and private buildings such as churches, palaces, and even ...
The yellow pigment in Portuguese 17th century azulejos

Coentro, S.; Mimoso, J.; Muralha, S.; Lima, A.; Santos Silva, A.; Pais, A. (TECHNART 2011 − Non-destructive and microanalytical techniques in art and cultural heritage, 2011-04-26)

The Naples Yellow pigment (lead antimonite) and its variants ((Pb-Sb-Sn and/or Pb-Sb-Zn triple oxides) have been the subject of several studies in the last decade [1-3]. This study focuses on the chemical characterization ...
In situ acoustic imaging to reveal glaze delaminations in the early stages in Portuguese azulejos

Calicchia, P.; Mimoso, J.; Costa, D. (ART 2011 - 10TH Int.Conf. AIPND, Florence, 2011-04-13)

Azulejos, the Portuguese glazed ceramic tiles, are a durable architectural finishing, but degradation phenomena induce tiles’ detachments from the supporting wall, or glaze delaminations from the ceramic substratum when ...
Durability of epoxy adhesives for in-situ rehabilitation of timber structures

Custódio, J.; Cruz, H.; Broughton, J. (2011)

Epoxy adhesives have been used for many years in the rehabilitation of timber structures and are currently the most appropriate adhesive type for in-situ operations. However, since they exhibit excellent initial bonded ...
Mineralogical and chemical characterization of historical mortars from military fortifications in Lisbon harbour (Portugal)

Santos Silva, A.; Cruz, T.; Paiva, M. J.; Adriano, P.; Candeias, A.; Schiavon, N.; Mirão, J. (Springer, 2011-03)

Historical mortars from sixteenth to seventeenth century military forts located at the mouth of the Tagus River in Lisbon have been characterized by polarized light microscopy (PLM), thermal analysis (TG/DTA), X-ray ...
New durability assessment method for bonded connections used in the in-situ rehabilitation of timber structures

Custódio, J.; Cruz, H.; Broughton, J. (2011-09-22)

In-situ rehabilitation/restoration systems for timber structures involving bonded-in rods represent an efficient alternative method when compared to the very intrusive techniques currently used. However, in spite of the ...
Construction and demolition waste generation and management in Lisbon (Portugal)

Braz de Melo, A.; Gonçalves, A.; Martins, I. M. (Elsevier, 2011-10)

The management of construction and demolition waste (CDW) is essential in the formation, growth and renovation of urban areas. This paper presents part of a study on CDW generation and management in the Lisbon Metropolitan ...
Azulejos históricos - Plano de trabalhos para avaliação de materiais e técnicas de conservação e restauro

Morais Pereira, S.; Mimoso, J. (LNEC, 2011-07)

Este relatório apresenta um plano de trabalhos que pretende estudar, avaliar e optimizar os métodos de conservação e restauro utilizados no tratamento de azulejos degradados. A finalidade última é oferecer respostas técnicas ...
Mineralogical and chemical characterization of historical mortars

Santos Silva, A.; Cruz, T.; Paiva, M. J.; Candeias, A.; Adriano, P.; Schiavon, N.; Mirão, J. (Springer Verlag, 2011-03-13)

Historical mortars from sixteenth to seventeenth century military forts located at the mouth of the Tagus River in Lisbon have been characterized by polarized light microscopy (PLM), thermal analysis (TG/DTA), X-ray ...

Now showing items 561-580 of 770

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