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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 ...

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 ...

Influence of environmental service conditions in Portugal on structural timber bonded connections

Custódio, J.; Cruz, H.; Palma, P. (2011)

A set of experiments was conducted to investigate how effective the insulating properties of timber were against excessive heating of a bonded connection located inside a structural element. The exterior and interior ...

Enhanced durability of structural bonded timber joints. Effectiveness of adhesion promotion techniques

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

Long-term durability of a structural adhesive joint is an important requirement, because it has to be able to support the required design loads, under service conditions, for the planned lifetime of the structure. Epoxy ...

Coatings applied on damp building substrates: performance and influence on moisture transport

Brito, V.; Gonçalves, T. D.; Faria Rodrigues, P. (Springer, 2011)

Dampness is a common condition in old buildings and, accordingly, many paint systems specific for this type of building allow for application on walls with nonnegligible moisture content. In spite of that, performance ...

Drying of red ceramic brick. Effect of five silicone-based water-repellent treatments.

Couto, S.; Gonçalves, T. D.; Grandão Lopes, J. (2011-05-12)

The presence of moisture inside a material whose surface was treated with a water repellent agent may give rise to unwanted side-effects. Indeed, the temporal and spatial significance of moistening events may be intensified ...

Use of a silicone-based hydrophobic treatment in ceramic floor tiles: a case-study in Portugal

Gonçalves, T. D. (Istituto Superiore per la Consevazione ed il Restauro (ISCR), 2011-05-13)

Hydrophobic treatments are often used in porous ceramic floor tiles to prevent the occurrence of stains during the use phase. Premature failure of the ceramic pavement of several apartments and townhouses of a golf resort ...

Evaluation of Adhesion Promotion Techniques for Structural Bonded Timber Joints

Custódio, J.; Broughton, J.; Cruz, H. (Taylor & Francis Group, LLC, 2011)

Long-term durability of a structural adhesive joint is an important requirement, because it has to be able to support the required design loads, under service conditions, for the planned lifetime of the structure. Epoxy ...

Rehabilitation of timber structures – Preparation and environmental service condition effects on the bulk performance of epoxy adhesives

Custódio, J. (Elsevier, Ltd., 2011)

Epoxy adhesives have been used for many years in the rehabilitation of timber structures and are currently the most appropriate adhesive type for on-site operations. However, because they exhibit excellent initial joint ...

Physical-Chemical characterization of historic portuguese tiles

Morais Pereira, S.; Mimoso, J.; Santos Silva, A. (LNEC, 2011-01)

A group of Portuguese tiles (azulejos) from the 17th to the early 19th centuries have been assessed for their chemical and mineralogical compositions and physical properties. This LNEC Research Report includes the results ...

Levantamento em obra de patologias em azulejos históricos - Visitas realizadas em 2009-2010

Mimoso, J. (LNEC, 2011-01)

O LNEC decidiu estabelecer um projecto de investigação programada dedicado à conservação de azulejos históricos. Antes porém da proposta de estudos que lhe deu origem, foi iniciada uma campanha de inspecções a obras ...

Durability and Strength Properties of Concrete Containing Coal Bottom Ash

Martins, I. M.; Gonçalves, A. (RILEM, 2010-09)

In Europe coal bottom ash production represents approximately one tenth of coal combustion by-products. About 44% of coal bottom ash is used in the construction sector, but its application as addition in concrete is very ...

Autogenous shrinkage measurements on cement pastes: influence of W/C, cement fineness, C3A content, and superplasticizer dosage

Ribeiro, A. C.; Gonçalves, A. (LNEC, 2010-12)

Adhesion in historic timbers

Custódio, J.; Broughton, J. (2010)

The use of adhesives to produce assembled structural joints in the building industry is increasing, particularly in the context of on-site rehabilitation of timber structures. On their own or together with steel or fibre ...

Factores que influenciam a reologia das argamassas

Vieira, M.; Ribeiro, A. C.; Branco, F. A. (Universidade do Minho, 2010-07-01)

O betão autocompactável (BAC) é um material com um comportamento que pode ser considerado intermédio entre o de um fluido e o de um aglomerado húmido de partículas. Podem então ser aplicados conceitos da reologia que ...

Self-compacting mortar for mass concrete application with PAC technology

Vieira, M.; Ribeiro, A. C. (RILEM, 2010-09)

Desenvolvimento de uma nova tecnologia de betão com agregados pré-colocados com recurso a argamassas autocompactáveis

Utilização de hidrófugos de superfície em materiais cerâmicos. Influência na secagem.

Couto, S. (2010-12)

A presente dissertação tem por finalidade compreender a influência dos tratamentos hidrófugos na secagem do tijolo cerâmico, tendo assentado na realização de ensaios de absorção capilar, permeabilidade ao vapor de água e ...

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