Fernando M. A. Henriques

Fernando M. A. Henriques
Universidade NOVA de Lisboa | NOVA · Department of Civil Engineering (CED)

PhD

About

98
Publications
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Introduction

Publications

Publications (98)
Article
Retrofitting a building normally aims to achieve a higher quality indoor climate in terms of thermal comfort or in terms of air quality, as well as reducing the building’s energy consumption. Alternatively, in buildings that house artefacts, the application of retrofit measures normally aims to improve the indoor climate in terms of the artefacts’...
Article
Full-text available
Cultural heritage plays a crucial role in modern societies as a symbol of their past and as a way to safeguard their identity in a continuously changing world. Interest in cultural tourism has been growing significantly, and in 2015 it was estimated that it was responsible for 40% of European tourism. Cultural tourism can be a major contribution t...
Conference Paper
Full-text available
RESUMO A World Monuments Fund Portugal (WMFP) apoia intervenções em património desde a década de 1990. As suas acções têm sido dirigidas, embora não exclusivamente, a património classificado, de que são exemplos a Torre de Belém, o Mosteiro dos Jerónimos e a estátua equestre a D. José I, em Lisboa. A WMFP participa nestas intervenções como principa...
Article
Full-text available
The energy performance of buildings has undergone major developments over the last few years. Due to increasingly demanding regulations, new technologies and constructive solutions have been sought to make buildings more energy efficient. Autoclaved aerated concrete (AAC) is a sustainable building material that provides a suitable solution to this...
Article
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Historic artefacts must be properly preserved if they are to be transmitted to future generations. Indeed, several methodologies and guidelines that aim to safeguard artefacts by limiting the ranges in which the indoor temperature and relative humidity vary exist, which means energy consumption. This paper aims to quantify the energy consumption as...
Article
Full-text available
The injection of grouts is a consolidation technique suitable for overcoming the structural deterioration of old stone masonry walls. Grouting operations involve introducing a suspension (grout) into a masonry core with the aim of improving the load capacity of the wall, as well as reducing its brittle mechanisms. The yield stress of injection grou...
Chapter
Stone masonry is a simple and durable constructive technique that was exhaustively used until the mid 20th century. However, stone masonry has particular weaknesses which, associated with the absence of maintenance, increase the vulnerability of its structural integrity. For this reason, masonry walls often need consolidation to improve mechanical...
Chapter
This chapter presents a research on the joint effect of silica fume (SF) and nanosilica (NS) on the fresh and hardened properties of natural hydraulic lime-based grouts for mechanical strengthening of old stone masonry walls. Old buildings were mainly built based on multi-leaf stone masonry walls using lime-based mortars. Due to reduced quality of...
Article
Full-text available
The knowledge of the indoor climate in cultural heritage buildings plays a prominent role in their conservation and sustainability. Monitoring campaigns are becoming more frequent, however, the high cost associated with commercial data loggers along with the lack of flexibility in programming and handling is a considerable hindrance. In the scope...
Article
Grout injection is a useful repair and strengthening technique to intervene in old masonry buildings. Until now, a very limited amount of work has been reported on the potential of geopolymers for consolidation of old stone masonry walls. In the last decades there has been several research initiatives focus on the development of materials involving...
Article
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This review provides an overview of the recent progress in the field of the rheology of grouts for historic masonry consolidation. During the last two decades, significant research has been devoted on the grouting technique for stone masonry consolidation but most results are scattered by scientific papers, congress communications, and thesis. This...
Article
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Historic artefacts are crucial to transmit history to future generations. Depending on the characteristics of their components these objects can be prone to biological attacks, chemical decay or even mechanical degradation. These three types of decay are induced by the indoor relative humidity and temperature, which are largely dependent on the cha...
Article
Artefacts are prone to various types of decay depending on the indoor conditions of the building in which they are kept. Moreover, due to climate changes, the indoor climate of these buildings may significantly change, which can endanger their preservation. Hence, this paper studies the effects of climate changes on the indoor climate of heritage b...
Article
Full-text available
Artefacts are prone to various types of decay depending on the indoor conditions of the building in which they are kept. Moreover, due to climate changes, the indoor climate of these buildings may significantly change, which can endanger their preservation. Hence, this paper studies the effects of climate changes on the indoor climate of heritage b...
Conference Paper
Full-text available
O património cultural desempenha um papel de relevo nas sociedades actuais como símbolo do seu passado e veículo de salvaguarda de identidade para o futuro. Em Portugal, o património cultural tem vindo a desempenhar um papel cada vez mais importante como motivo de atracção turística e criação de receitas. O aumento do número de visitantes pode ser...
Poster
Full-text available
O património cultural edificado assume um papel fundamental nas sociedades modernas e evidencia-se como um símbolo do seu passado e veículo de salvaguarda de identidade para o futuro. Uma ocupação desadequada pode comprometer a estabilidade do clima interior e colocar a conservação das colecções e conforto e saúde dos visitantes em risco.
Article
Full-text available
Historic buildings are a living representation of our past and it is our duty to ensure that future generations have access to their heritage. In order to accomplish this, it is necessary to determine the conditions that the buildings are in and, if needs be, to make the necessary changes. In this latter stage, it is helpful to have a validated who...
Chapter
The overall goal of this chapter is to contribute to the understanding and improvement of the rheological performance of injection grouts for consolidation of stone masonry buildings. It is a well known fact that old masonries such as heritage or ordinary buildings represent a large portion of the construction area in many European cities. They fre...
Article
Full-text available
Influência do superplastificante, temperatura e tempo de repouso na consolidação de grouts de cal hidráulica Resumo Em portugal, tal como em outros países espalhados pelo mundo, a necessidade de reabilitação das edificações é bastante elevada. neste vasto número de edifica-ções degradadas destacam-se os monu-mentos e construções antigas que, devido...
Article
Full-text available
This paper puts forward a new hydrophobic silica fume and assesses its contribution to the performance improvement of grouts for stone masonry consolidation. The experiments were conducted using different dosages of hydrophobic silica fume with natural hydraulic lime grouts in the presence of a polycarboxylate-based high-range water reducer. Result...
Article
Multi-leaf stone masonry walls are among the most vulnerable elements of historic constructions. Grout injection is a common and efficient technique to consolidate such masonries. It consists of introducing a grout into the masonry inner core in order to upgrading the cohesion of the wall by ensuring the transversal bond between the external leaves...
Article
Full-text available
Actualmente um dos maiores desafios dos museus é alcançar a sustentabilidade, reduzindo custos e o consumo de energia sem prejudicar a conservação e conforto. Contudo, nem sempre é fácil alcançar este equilíbrio uma vez que, por definição, a conservação e conforto exigem um controlo climático rigoroso que conduz a consumos energéticos elevados. Nes...
Article
Full-text available
The equestrian statue of D. José I, in Lisbon, Portugal, stands on an elegant and decorated plinth fashioned in a very dense limestone. The sculptor, Joaquim Machado de Castro, designed the pedestal with colossal stone pieces and selected one of the best Portuguese stones for this purpose, the Lioz limestone. The same stone was also used for the fl...
Article
Grout injection is an efficient technique commonly used for structural consolidation of multi-leaf stone masonries, which often present high porosity (especially in the inner core) due to the presence of internal voids. Since porosity and void size distribution are not constant within masonry, the efficiency of grouting varies along the injection....
Article
Full-text available
Nowadays, one of the largest challenges of museums is to achieve sustainability by reducing costs and energy demands without jeopardizing conservation and thermal comfort. The evolution of science seems to show a new trend with the application of less stringent targets, but after more than one century of research in the museum environment field the...
Article
Full-text available
The purpose of this paper is to identify the changes generated by wind-driven rain in high capillary water uptake walls (such as uncoated solid brick walls) in maritime climates, using for this purpose two cities in different continents with roughly the same latitude – Lisbon (Portugal) and San Francisco (USA), and another further north – Montreal...
Article
Full-text available
Purpose – The purpose of this paper is to verify the applicability and efficiency of two statistical methods to obtain sustainable targets of temperature and relative humidity in historic buildings located in temperate climates. Design/methodology/approach – The data recorded along one year in a non-heated historic building in Lisbon (Portugal) was...
Article
Full-text available
Historic buildings are usually characterized by a particular microclimate due to their high thermal inertia that may require the use of mechanical systems to control the environment. The guidelines used to define the indoor climate have evolved in recent years, with new methods and deepening the knowledge of the behaviour of materials, resulting in...
Article
The grout injection technique is commonly used for the consolidation of old stone masonries. In particular, the multi-leaf masonries which generally exhibit low compactness in the inner core and very few links between the internal and external leaves. Grouts are concentrated suspensions that can be seen as mixtures of binder with water, and special...
Article
This paper aims to model the effect of grout composition on properties of two natural hydraulic lime (NHL) grouts based on the correlation between grout rheometer results and simple flow tests. First, the effects of water:binder ratio and superplasticizer dosage on its rheological properties and flowability were analyzed. Dosage of superplasticizer...
Article
Full-text available
Apesar da reconhecida importância conferida ao estudo microclimático em edifícios históricos para a correta conservação de suas coleções e objetos de relevância histórica e cultural, o conhecimento acerca de seu comportamento em climas temperados é ainda reduzido. Ao longo das últimas décadas surgiram diferentes especificações focadas nas necessida...
Article
Full-text available
A conservação do património histórico tem vindo a ser assumida como bandeira nacional e internacional ao longo das últimas décadas. Contudo, as questões relacionadas com o ambiente interior de edifícios de relevo histórico e cultural têm demorado a assumir o papel preponderante que justificam. Apesar de terem sido realizados vários estudos ao longo...
Conference Paper
Full-text available
A preservação do património edificado ocupa uma posição preponderante nas socie-dades actuais que assumem o objectivo de manter e passar às gerações vindouras a história e cultura de cada país. Estes edifícios, normalmente constituídos por paredes espessas e caracterizados por uma inércia térmica elevada apresentam um comportamento higrotérmico esp...
Article
The Italian standards, formerly NORMAL, define Extraordinary Maintenance as those where a major intervention on the building is carried out, usually referred to as a conservation intervention. These receive much attention from the media thus prompting the interest of NGO and for non-profit organizations which take an interest in funding such projec...
Article
Full-text available
Old buildings frequently present specific microclimates that do not always match the ideal conditions for the safe conservation of their materials, but that have been stable and consistent for a long time. In the last years several methodologies have been defined and the search by ideal values of temperature and relative humidity was intense, as i...
Article
The grout injection is a technique widely used for structural consolidation of the multi-leafs stone masonry, which often present low compactness and weak links between the internal and external leaves. Grouts can be seen as mixtures of binder with water, with or without special additives. To ensure an adequate flow of the grout and a correct filli...
Article
http://www.sciencedirect.com/science/article/pii/S0950061814005972 Old masonries especially in the case of multi-leaf walls often present low compactness and very few links between the internal and external leaves. The injection of grouts in the core of the multi-leaf masonries is one of the techniques used most frequently for consolidation. In or...
Article
Grout injection technique applied in a multiple leaf masonry walls aims at increasing the compactness of the masonry and, therefore, improving their monolithic behaviour by bonding the separated segments together without compromising the architectural value of the masonry building. The success of the injection grouts depends mainly on their rheolog...
Article
Full-text available
Grout injection is a widely used technique for consolidation of multi-leaves masonries, aimed at increasing the compactness and to create links between the internal and external leaves that will improve shear, flexural and compressive resistances. Grouts can be seen as mixtures of binder with water, admixtures and/or additives, which should present...
Article
Grouting is a current repair technique for consolidating and strengthening old masonry buildings. Grouts can be seen as mixtures of binder with water, admixtures and/or additives, which should present low viscosity and high penetrability. The grout specification involves the knowledge of the flow capacity within the masonry inner core and physic-ch...
Article
Full-text available
Grout is a concentrated suspension that can be employed for the homogenisation and consolidation of systems presenting pores, voids and cracks, such as inner core of old stone masonries. A grout should be well conceived, taking into account the optimisation of its performance; this means that simple binder and water formulations prove to be inadequ...
Conference Paper
Grout injection is a widely used technique for masonry consolidation of multileaves masonries, aimed at increasing the compactness and to create links between the internal and external leaves that will improve shear, flexural and compressive resistances. The lack of information about the performance of hydraulic lime based grouts as a function of t...
Conference Paper
Full-text available
Grouting is currently a repair technique for consolidating and strengthening old masonry structures. Grouts can be seen as mixtures of binder with water, admixtures and/or additives, which should present low viscosity and high penetrability. The grout specification involves the knowledge of the flow capacity within the masonry inner core and physic...
Article
Full-text available
The injection of grouts inside multi-leaf stone masonries is a technique widely used for structural consolidation. To ensure an adequate flow of the grout inside the masonry, it is crucial to assure good fresh grout properties, such as good rheological behaviour. The scope of this paper is to provide preliminary indications and valuable data about...
Conference Paper
Muitas vezes os edifícios antigos, principalmente os de relevo histórico, apresentam microclimas próprios, nem sempre correspondentes às condições ideais para a correcta conservação dos materiais e artefactos. Contudo, estes adaptam-se e respondem às alterações que possam ocorrer com falhas e deformações irreversíveis, sem se conseguirem readaptar...
Conference Paper
Grout injection is a widely used technique for masonry consolidation of multi-leaves masonries, aimed at increasing the compactness and to create links between the internal and external leaves that will improve shear, flexural and compressive resistances. The lack of information about the performance of hydraulic lime based grouts as a function of...
Article
Full-text available
This paper deals with the coupled effect of temperature and fly ash (FA) addition on rheological behaviour of natural hydraulic lime (NHL5) based grouts, currently used in masonry consolidation. The use of a grout injection technique for masonry consolidation may lead to an increase of hydrostatic pressure and lead to structural damage. This means...
Article
One of the techniques of old masonry consolidation is the injection of grouts. For a successful injection it is necessary to ensure an adequate flow of the grout inside the porous media, for which it becomes essential to control the grout rheological behaviour and stability. This paper analyses the influence of grout mixing procedures on rheologica...
Article
The goal of this research was to develop a methodology for grout composition optimization concerning specific applications. It could be developed for masonry consolidation or bonded prestressed tendon grout, pre-placed aggregate grout, among others. The grout development does not only depend on its intrinsic properties but also on the nature and fe...
Article
The effective design of a mortar for repairing masonry depends on a clear understanding of its function within masonry. The functions of mortar materials in masonry are classified as bedding, pointing, grout, render, plaster and mortars for surface repairs. The requirements that each type of mortar must meet in service depend on its environmental e...
Article
The effective design of a mortar for repairing masonry depends on a clear understanding of its function within masonry. The functions of mortar materials in masonry are classified as bedding, pointing, grout, render, plaster and mortars for surface repairs. The requirements that each type of mortar must meet in service depend on its environmental e...
Article
The purpose of a grout injection technique applied in a multiple leaf wall is to increase the compactness and create links between the internal and external leaves. The correct grout selection should take into account many characteristics, in particular injectability and stability. This paper analyses the variations of some fresh grout properties t...
Article
The main sources of moisture on building façades are rain and condensation. Being moisture a prerequisite for the development of microbial growth it is of great interest to identify and analyse the factors responsible for these wetting mechanisms. The development of the microbial vegetation, in addition of being potentially damaging to the building...
Article
Full-text available
International bibliography on conservation usually refers that mortars made with lime putty with long extinction periods behave better than others made with the current dry hydrated limes. In order to evaluate this assess, an experimental study of lime mortars was carried out, using dry hydrated lime and two lime putties. It becomes clear that the...
Article
Full-text available
Resumo : No presente trabalho compara-se genericamente o comportamento de argamassas correntes com base em diferentes ligantes minerais e de argamassas com o mesmo tipo de ligante mas em que parte do traço em areia de rio foi substituído por areia de areeiro. São apresentados os resultados dos vários ensaios de caracterização efectuados, numa persp...