Anabela Paiva

Universidade de Trás-os-Montes e Alto Douro | utad · Departamento de Engenharias

A parede de Trombe é um sistema solar passivo de ganho indireto que, apesar de não constituir uma prática corrente na construção, potencia o aproveitamento da energia solar para aquecimento do espaço interior, diminuindo o recurso a equipamentos de climatização. É constituída por uma parede acumuladora composta por materiais com elevada capacidade...

Sustainable development is today’s big challenge that we need to overcome in order to assure well-being and resources for future generations, and at the same time protect ecosystems and guarantee biodiversity. Circular economy seems to be a key tool to slow down the environmental degradation of the planet. Implementing circular economy requires a g...

The Trombe wall is a passive solar system that can improve buildings energy efficiency. Despite the studies already developed in this field, more research is needed to assess the possibility of its integration in buildings avoiding user intervention. In this study, the influence of air vent management and materials’ heat storage capacity upon its t...

Haussmannian buildings architecture spreads throughout the city of Paris. These buildings were constructed in the 19th century, being presently centenarians. However, they present several pathologies which prevent their adequate use, moreover, an update regarding users security, sound, thermal and fire requirements is, among others, urgently needed...

Hausmannian buildings architecture spreads throughout the city of Paris. These buildings were constructed in the 19th century, being presently centenarians. However, they present several pathologies which prevent their adequate use, moreover, an update regarding users security, sound, thermal and fire requirements is, among others, urgently needed....

Haussmann buildings architecture spread throughout the city of Paris. Nevertheless, those buildings are nowadays submitted to heavy operations of use change, conservation and rehabilitation, justified by several reasons, among others are building aging and the increasing demand for hotel rooms in Paris. In this paper, a structural and material char...

O recurso a tecnologias passivas de aquecimento e de arrefecimento pode contribuir para a redução do uso de equipamentos de climatização e, consequentemente, para a melhoria da eficiência energética nos edifícios. A parede de Trombe é um sistema solar passivo de ganho indireto, cuja integração na envolvente de um edifício poderá conduzir à diminuiç...

Haussmann buildings are representative of Paris urban architecture. However, those buildings being centenarians, present several pathologies which is preventing their adequate use. Moreover, an upgrade regarding users security, acoustic, thermal and fire requirements is, among others, urgently needed to meet the new standards. Additionally, there i...

KEYWORDS: Maintenance of buildings; maintenance management; preventive rehabilitation; reactive rehabilitation; maintenance costs. ABSTRACT The performance and durability of buildings are intimately related to their maintenance. However, maintenance is frequently casuistic and merely reactive, regardless of the latest scientific developments in thi...

Project management has been more commonly accepted and implemented by companies, but risk events, as well as specific requirements on companies, in general has been turning into a greater concern in the implementation of management practices. Over the years, different recognized methods have been developed by various associations allowing project m...

The Alto Douro Wine Region, located in the northeast of Portugal, a UNESCO World Heritage Site, presents an abundant vernacular building heritage. This building technology is based on a timber-framed structure filled with a composite earth-based material. A lack of scientific studies related to this technology is evident, furthermore, principally i...

To assure an integrated rehabilitation process, it is first necessary to possess a detailed knowledge of the existing buildings that are being intervened. Besides this, it is crucial to assure not only the technical performance of the buildings, but also the preservation of its heritage value, keeping in mind sustainable principles that are fundame...

ABSTRACT The performance and durability of buildings are both closely related to the maintenance of those buildings. Despite what the most recent scientific developments have shown in this area, the fact is that the maintenance of buildings is something frequently atomistic and merely reactive. The influence exerted both by the management of condom...

An analytical and experimental analysis on the Trombe wall thermal performance was carried out for different conditions of ventilation openings and occlusion device operation. Experimental results allowed to determine temperature fluctuation, heat flux, heat delay and air velocity at the ventilation openings. A calculation methodology was applied t...

The influence of the massive wall material, thickness and ventilation system on the Trombe wall thermal performance was analysed based on an analytical methodology. Results obtained from experimental work will also be added to this study. During the heating season, for the non-ventilated Trombe wall, the global heat gains decrease is not proportion...

Despite the studies already developed about Trombe walls, more research work is needed to contribute to the knowledge about their behaviour and optimize it according to the specific characteristics of each climatic region. The ventilation openings and the shading device operation decisively influence the temperatures fluctuation along the system an...

Tabique is one of the main Portuguese traditional building techniques which use raw materials as stone, earth andwood. In general, a tabique building component as a wall consist of a wooden structure made up of vertical boards connected to laths by metal nails and covered on both sides by an earth based material. This traditional building technolog...

The contribution for the reduction of energy consumption of buildings can be obtained through the improvement of the energy performance of new and existing buildings. The use of more efficient construction solutions, namely the introduction of passive solar systems in the buildings envelope can be a successful strategy to achieve this purpose. So,...

Some alternative applications of corncob as a raw thermal insulation material are presented in this research work. Usually, corncob has been treated as an agricultural waste. Finding practical applications of this waste in product manufacturing may preserve the environment and may also allow using more green technologies. Therefore, a corncob parti...

Tabique construction is part of the Portuguese heritage and similar techniques are applied worldwide. Therefore, research works developed on this field may be an added value to future retrofitting processes. In this context, an experimental analysis of the thermal behaviour of three different solutions of tabique walls is presented. These solutions...

Tabique is one of the main Portuguese traditional building techniques which use earth, wood and stone as building materials. In general, a tabique building component as a wall is formed by a timber structure more or less complex connected by metal nails and filled with an earth based material. The nails have an important role in this system because...

Tabique is one of the main Portuguese traditional building techniques which use earth, wood and stone as building materials. In general, a tabique building component as a wall is formed by a timber structure more or less complex connected by metal nails and filled with an earth based material. The nails have an important role in this system because...

Motivation in work teams has a key role to play for the survival and competitiveness of businesses in the harsh environment of economic recession. This paper characterizes motivation in small and medium-sized construction companies in Portugal. It draws on data collected from in-person surveys which were carried out to employees of 32 companies. Re...

O tabique é uma das técnicas construtivas tradicionais da arquitectura portuguesa que recorre à aplicação de materiais naturais tais como a terra e a madeira. Podem se encontrar vestígios desta técnica construtiva um pouco em todo o território continental de Portugal. A região vinhateira do Alto Douro em Portugal, classificada património mundial da...

O tabique é uma das técnicas construtivas tradicionais portuguesas que recorre à aplicação da terra como material de construção. De forma simplificada e generalista, um elemento construtivo de tabique, tal como uma parede, é constituído por uma estrutura de madeira formada por tábuas verticais ligadas entre si por um fasquio (ripas horizontais) atr...

Alguns edifícios de tabique da Região de Trás-os-Montes e Alto Douro apresentam a particularidade de incluir no material de enchimento das paredes exteriores, uma mistura de caroços de espiga de milho e terra. Este facto incentivou a realização de um trabalho de investigação no sentido de analisar o potencial de aplicação do caroço de espiga de mil...

A building requires beautiful aesthetic, must be constructed in accordance with local legislation and be compatible with the function for which it was designed. The aim of this paper is to present sustainable assessment methods applied to Brazilian buildings and study the applicability and benefits of the Leadership in Energy and Environmental Desi...

Tabique is one of the main Portuguese traditional building techniques which use raw materials as earth, wood and stone. In general, a tabique building component as a wall is formed by a timber structure more or less complex, filled and plastered by a composite earth based material. The earth based material has an important role in this system becau...

Tabique is a traditional Portuguese building technique using timber and earth and was intensively applied until the 20th century. There is an impressive tabique heritage that requires maintenance and rehabilitation interventions. Taking into account the facts that technical and scientific publications related to this particular technique are lackin...

The improvement of energy performance in buildings can be achieved through the integration of a Trombe wall system. The literature review reveals that more research work is still required to evaluate the real impact of this system on the building thermal performance. The study here presented aims to define a calculation methodology of the Trombe wa...

Unfortunately software development projects have long been identified with budget complications, delays and failure concerning scope. For instance, the widely quoted CHAOS Reports of the Standish Group, whose first results were released in 1994, find that while this situation has improved, deviations from the plan continue to be present in a majori...

Project success is highly dependent on the project management process, and there are several aspects that need to be carefully considered. This article aims at responding to the research question: are there similarities in different industries in what concerns the critical aspects for the success of project management? Throughout a comprehensive su...

Este trabalho de investigação centrou-se no estudo experimental do desempenho térmico de sistemas construtivos tradicionais de paredes de tabique. Para o efeito, diferentes modelos de paredes de tabique foram construídos e ensaiados termicamente em laboratório. Geralmente, uma parede de tabique é um elemento construtivo caracterizado por apresentar...

O tabique é uma técnica tradicional de construção aplicada em diversos locais em todo o mundo, que usam a terra como material de construção. A terra desempenha um papel extremamente relevante, como elemento de acabamento e enchimento na técnica de construção de tabique. Na verdade, ela é aplicada como o principal constituinte que cobre as armações...

O património construído em tabique Português é muito expressivo em termos de quantidade e apresenta idades tendencialmente superiores a 100 anos. A necessidade de ser reabilitado é uma realidade. Neste contexto, cada processo de reabilitação terá as suas especificidades. No entanto, todos eles terão de ser formulados de modo a garantirem os padrões...

The construction industry plays a very important role in the Portuguese economy. In 2009, it was among the top five economic sectors, representing 13% of total employment. Nevertheless, project failures are still frequent mainly due to inadequate management practices and to the intrinsic characteristics of projects of the construction industry. Eve...

O crescente consumo de energia e o consequente impacte nefasto no meio ambiente conduzem à necessidade de adotar medidas de redução do consumo energético. No setor dos edifícios, o elevado consumo de energia pode ser minimizado, recorrendo a soluções mais eficientes e sustentáveis ao nível da sua envolvente, nomeadamente através da integração de si...

Usually, the corn cob is considered an agriculture waste. This natural and organic waste material may be used in the industry, in general, and in the building industry, in particular. The work presented in this paper was developed in order to give a contribution to the knowledge of this material, by attempting to describe and assess its macrostruct...

A lightweight concrete using granulated corn cob (without corn) as an aggregate is proposed in this research work. Taking into account that corn cob, after extracting the corn, is generally considered an agricultural waste, an interesting economic and sustainable benefit may result by using it as a building material. Therefore, it can be an alterna...

The use of passive solar systems in new and existing buildings through its integration in the buildings envelope can contribute to the improvement of its energy performance and therefore reduce the negative environmental impact. An example of passive solar systems of indirect gain, to be integrated in the buildings envelope, is the Trombe wall, who...

An alternative expedite experimental set-up is proposed to evaluate the thermal insulation performance of corn cob particleboards. Testing in situ thermal insulation performance under real thermal and hygrometric conditions, using more realistic sample dimensions, testing simultaneously several samples and monitoring continuously for several days t...

This research work is focused on analyzing the potential application of textile subwaste as an alternative building thermal insulation material for double external walls, and in a sustainable perspective. The studied textile subwaste results from the mattress industry and it was briefly characterized as a material. Taking into account that it is ne...

Tabique construction is one of the main Portuguese traditional building techniques that use earth based building materials. It is peculiar building technique which uses corn's cob as a filling material for the external tabique walls. The existing tabique construction in Trás-os-Montes e Alto Douro region of northeast Portugal was studied to learn f...

The perception of success reached in the execution of a project is largely related to the set of aspects that are considered in its evaluation. Usually, success factors comprise schedule, budget and scope achievements. However, other aspects like project approval by the client or final product quality, for instance, frequently have a significant im...

The perception of success reached in the execution of a project is largely related to the set of aspects that are considered in its evaluation. Usually, success factors comprise schedule, budget and scope achievements. However, other aspects like project approval by the client or final product quality, for instance, frequently have a significant im...

The Trombe Wall is a passive solar heating system of indirect gain. It consists essentially on a glass in the outside, an air-box and a wall accumulator element, painted black. This system serves as a free heater in winter, because it has the ability to accumulate the heat from the sun during the day and transmit the heat accumulated to the interio...

In Portugal, the house building industry has mostly adopted reinforced concrete framed structures and clay brick-wall. The use of other structural materials, such as steel, timber, and stone-wall is still rather limited in this sector. Moreover, the use of earth-based construction techniques and solutions still remains limited to individual cases....