Jorge de Brito

Jorge de Brito
University of Lisbon | UL · Department of Civil Engineering, Architecture and Georresources

PhD

About

1,578
Publications
1,008,614
Reads
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29,717
Citations
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January 1988 - June 2015
University of Lisbon
Position
  • Professor (Full)

Publications

Publications (1,578)
Article
Full-text available
Durability and recycling are two major concerns in the construction industry. Concrete carbonation may impair reinforced concrete durability as it favors the onset of reinforcement corrosion. The use of recycled aggregates, as a replacement for natural aggregates, in construction applications is a feasible way of recycling given materials from cons...
Book
Sustainable Construction Materials: Municipal Incinerated Bottom Ash discusses the global use of virgin aggregates and CO2 polluter Portland cement. Given the global sustainability agenda, much of the demand for these two sets of materials can be substantially reduced through the appropriate use of waste materials, thereby conserving natural resour...
Article
Full-text available
A recent quest for more sustainable cement-based construction materials has triggered the pursuit of technically viable alternatives of cement, making reactive magnesium oxide (MgO) one of the least known top contenders to reduce this sector’s environmental impact since it participates in the cement’s hydration reactions and presents enhanced carbo...
Article
In this paper, mortar specimens were produced using two types of commercially-available reactive MgO as partial cement replacement (10%, 15% and 20%, by weight) and fine recycled concrete aggregate as siliceous sand substitute (50% and 100%, by volume). The specimens were subjected to thermogravimetric, energy dispersive X-ray, differential thermal...
Article
This paper presents the design of simply supported one-way recycled aggregate concrete slabs in compliance with Eurocode 2 (EC2), to illustrate the design process of slabs with these materials. Calculations were based on various evidence-based assumptions from previous studies, namely the effect of incorporating RA on several properties of concrete...
Article
Full-text available
This study is framed within the circular economy model through the valorisation of industrial by-products. This research shows the results of producing self-compacting mortars (SCMs) with electric arc furnace dust (EAFD) and other industrial by-products such as fly ash, conforming (FA) or not conforming (NcFA), from coal-fired power plants, or reco...
Article
The effect of reactive magnesium oxide (MgO) as partial fly ash replacement in alkali-activated fly ash mortars (0, 10 and 20 %) was studied under two different environments: conventional climatic chamber and climatic carbonation chamber with 0.04 and 5 % level of CO2 respectively. A complete characterisation of all raw materials was performed. The...
Article
Full-text available
Recycled aggregates (RAs) have been playing an important role in replacing natural aggregates (NAs) in concrete production, thereby contributing to a reduction in the extraction of natural resources and the promotion of a circular economy. However, it is important to assess the global impacts of this replacement, in both environmental and economic...
Article
The flexural behaviour and ductility ratio of reinforced concrete beams made with steel fibres and coarse recycled aggregate and strengthened after failure are studied. Eight reinforced concrete beams (cross-section 150 by 200 mm) and 1500 mm span, with various transverse reinforcement spacings, were manufactured and tested. Recycled aggregates fro...
Article
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Currently, insurance companies exclude the buildings’ envelope of their policies since they lack reliable information about the risks and degradation models and are unable to estimate the probabilities of intervention and corresponding costs. This study intends to overcome the existing gap, proposing property maintenance insurance policies develope...
Article
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Renders should have an adequate resistance to impacts, since they must protect the substrate. The use of fibres may enhance the energy absorbed when the mortars are submitted to an impact load, which contributes to postpone the first crack, and control its propagation and width. In this study, the impact strength was measured by a falling mass from...
Article
Full-text available
Due to environmental concerns, the search for sustainable construction solutions has been increasing over the years. This global concern is creating a trend in the use of recycled aggregates resulting from construction and demolition wastes from different sources. In addition to their physical and mechanical properties, it is important to analyse t...
Article
Full-text available
This study evaluates the thermal conductivity of concrete produced with reactive magnesium oxide (MgO) as a partial replacement for cement. MgO is a viable option for the concrete industry , mainly due to its benefits in sustainability and reducing CO2 emissions compared to cement emissions. Four different MgO's produced in Australia, Canada, and S...
Article
Full-text available
Carbonation is one of the critical durability issues in reinforced concrete structures in terms of their structural integrity and safety and may cause the fatal deterioration and corrosion of steel reinforcement if ignored. Many researchers have performed a considerable number of studies to predict the carbonation of concrete structures. However, i...
Article
Full-text available
The main factor that alters the quality of recycled concrete aggregate (RCA) is the paste adhered to the natural aggregate (NA). Since it causes weakening of the interfacial transition zone (ITZ) between the aggregate and the cementitious paste, it becomes a determining factor for the mechanical behavior of concrete. It turns out that it is critica...
Article
Full-text available
This study presents the results of an experimental campaign on the use of municipal solid waste incinerator bottom ash (MIBA) and fly ash (FA) as precursors for the production of alkali-activated materials. MIBA was subjected to a pre-treatment stage in response to two issues: high metallic aluminum content, which reacts in a high pH solution, rele...
Article
Full-text available
The buildings’ surroundings’ environmental exposure conditions (e.g., orientation, location, altitude, distance from the sea, temperature, precipitation, presence of damp, exposure to prevailing winds, among others) have a considerable influence on the performance and durability of their envelope. Furthermore, the intensity of these conditions can...
Conference Paper
Full-text available
A indústria da construção é responsável por um terço do total de resíduos produzidos na EU. Atualmente, encontrar soluções para a reutilização ou reciclagem destes resíduos é uma das maiores preocupações ambientais do sector. A substituição de areia natural em materiais de construção, tais como betões ou argamassas, por resíduos de construção e dem...
Book
This book gathers peer-reviewed contributions presented at the F-EIR Conference 2021, Environment Concerns and its Remediation, held in Chandigarh, India, on October 18-22, 2021. The respective papers focus on environmental monitoring and remediation, and cover topics such as efficiency in the use of energy, water, resources and human capital, wast...
Article
As a solution to the disposal of construction and demolition waste and the shortage of concrete raw materials, recycled aggregate concrete has been studied by pioneer academics and industry researchers for decades. This paper analyzed a milestone paper by Limbachiya, Leelawat, and Dhir (2000) in the field of high-strength recycled aggregate concret...
Article
Research argues in favor of using recycled aggregates in structural concrete. However, lack of specific clauses in standards for recycled aggregate concrete design hinders the use of recycled aggregate concrete by the industry. Recycled aggregate concrete‐specific design clauses are hindered because conventional research must be complemented with e...
Article
Full-text available
Estimating the shrinkage of structural concrete is essential to calculate, at the design stage, the stresses that a structure may experience due to this phenomenon. Nevertheless, changes in composition, as well as the use of wastes as raw materials, alter the shrinkage behaviour of concrete and render invalid shrinkage-prediction models from the st...
Article
The built environment represents a high burden in terms of energy consumption. Therefore, it is essential to seek strategies to improve its energy efficiency. Green vertical systems (GVSs) could play an important role in this context as a possible solution to enhance the thermal insulation of buildings. Additionally, GVSs may help to mitigate the u...
Article
Full-text available
Concrete is the most widely used construction material in the world; as such, the best way to promote a more sustainable construction industry is to improve the environmental performance of this material. Since cement production is the main source of the high environmental impact of concrete, due to the high calcination temperature that clinker req...
Article
Full-text available
The use of electric arc furnace slag (EAFS) as sole precursor to produce alkali-activated mortars has been experimentally investigated. EAFS, a by-product of the steel recycling industry, is a coarse material with unevenly distributed and size-extensive particles. Milling of EAFS was required to achieve a cement-like sized powder before it could be...
Article
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A huge amount of treated wood waste containing hazardous substances is produced every year all over Europe that simply ends up in landfills. In this study, the authors investigate the practical feasibility of using end-of-life treated wood for producing innovative lightweight cement composites. For this purpose, wood waste from four different sourc...
Article
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In the last decades, considerable work has been done regarding service life prediction of buildings and building components. Academics and members of the CIB W080 commission, as well as of ISO TC 59/SC14, have made several efforts in this area and created a general terminology for the concept of service life, which is extremely relevant for propert...
Cover Page
Full-text available
This book gathers peer-reviewed contributions presented at the F-EIR Conference 2021, Environment Concerns and its Remediation, held in Chandigarh, India, on October 18-22, 2021. The respective papers focus on environmental monitoring and remediation, and cover topics such as efficiency in the use of energy, water, resources and human capital, wast...
Article
Full-text available
The purpose of this research was to develop a computational tool to ease the process of technical building inspections. Thus, a web-based application was created, supported by a well-structured expert inspection system for the building envelope. This application has a distributed architecture, which allows easy implementation using common technolog...
Article
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The high strength and durability of high-performance concrete (HPC) may be significantly reduced by shrinkage cracking. The use of reactive magnesium oxide (MgO) can reduce shrinkage of cement-based materials due to its expansive properties. This study intends to analyse the validity of MgO as shrinkage-reducing agent in recycled aggregate HPC. To...
Article
The density, colour and texture, plus mineral and chemical features of 18 ceramic-like CDW samples from the Abruzzo region (Central Italy) were characterised. The concretes, natural stones, tiles, roof-tiles, bricks and perforated bricks are either aphanitic to porphyric. Concretes and natural stones are grey to white and tend to be > 2.0 g/cm³; th...
Article
The capillary mechanisms in mortars were investigated in this study by using different cement-lime mortar compositions commonly used in coatings and repair mortars. Two types of natural sand (maximum diameter of 1.2 and 2.4 mm) were used in water absorption by capillarity, water absorption by immersion and boiling, and mercury intrusion porosimetry...
Chapter
This chapter presents a literature review on the influence of using bottom ashes in the properties of recycled aggregate concrete. Three types of bottom ashes are analyzed: coal bottom ashes, municipal solid waste incinerator bottom ashes, and biomass bottom ashes. Their physical, chemical, and mineralogical properties are discussed, as well as the...
Chapter
The production of concrete, the most used building material globally, is causing severe environmental damage. This is known to be primarily attributed to the production of ordinary Portland cement (OPC). Hence, a vast effort is directed within the concrete industry to find alternatives that would yield a more sustainable concrete product. Concurren...
Chapter
The presented research highlights different ways of collecting, systematising and using data in the field of building maintenance towards rational decisions. First, the harmonisation of the information collected during building inspections is presented. Such harmonisation was developed within a global inspection system for the building envelope, in...
Article
Full-text available
Façade claddings, as the outer protection layer of the building’s envelope, are directly exposed to environmental degradation agents. The façades’ orientation and their distance from the sea, among other location and protection-related factors, influence their vulnerability to climate loads, in particular wind and air humidity. These loads, as well...
Article
In this paper, the mechanical behaviour of short rubberized concrete-filled steel tubular (RuCFST) columns with square cross-section under combined cyclic bending and (monotonic) compression is studied numerically. For this purpose, dynamic explicit analyses with kinetic energy control (for the quasi-static behavior to be obtained) using the commer...
Article
Full-text available
Accessibility to buildings’ envelope depends on efficient inspection and other maintenance actions of their components. When access to these components is not planned, special means of access are required to carry out the maintenance work. Means of access, besides having a fundamental role on the quality of maintenance works of building envelope co...
Article
Full-text available
The use of recycled aggregates in the production of reinforced concrete elements is becoming a reality. The durability of such elements, namely those of reinforced natural aggregate concrete, is an object of concern. In this study, the service life of reinforced recycled aggregate concrete is estimated through prediction models available in the lit...
Article
Toward a sustainable approach, concrete consumption is confronted with new challenges to developing and implementing cleaner technology. Concrete production is associated with excessive use of natural resources along with environmental pollution, which can be partially addressed through cement replacement with industrial waste. Red mud (RM), a toxi...
Article
Full-text available
Construction and demolition wastes (CDW) are generated at a large scale and have a diversified potential in the construction sector. The replacement of natural aggregates (NA) with CDW recycled aggregates (RA) in construction materials, such as mortars, has several environmental benefits, such as the reduction in the natural resources used in these...
Article
Full-text available
In recent years, in Europe, the use of wood-based products for structural solutions has increased, mainly because of the recent technological developments (e.g. development of products for high-rise buildings) and of the environmental benefits of wood-based products (e.g. carbon content of wood products). This study proposes a methodology based on...
Article
Due to the large amount of CO2 emissions produced nowadays by the construction sector, the scientific community is looking for measures that will bring constructions to the be as environmental-friendly as possible. One of the most popular lines of research is the use of construction waste as recycled aggregates for the production of recycled aggreg...
Conference Paper
Full-text available
Construction, renovation, rehabilitation, and demolition generate large amounts of waste and can be responsible for a significant environmental impact. A strategy for processing this waste has been to use this material in new constructions, based on studies on using it as a coarse recycled aggregate to manufacture concrete. After crushing, construc...
Conference Paper
Full-text available
Uncertainty is intrinsic to the inspection and diagnosis process of building elements, even though it is seldom quantified. Uncertainty may derive from observation conditions, adopted methods and communication. The objective of this research is to raise awareness among surveyors about the weight of uncertainty on their activities. Thus, a quantific...
Article
Cracking is an anomaly that affects the durability of renders. It is well known that fibres improve the deformability of the mortars and promote the distribution of the stresses within their matrix, consequently reducing the susceptibility of mortars to cracking. The combination of the improvement of durability with the addition of waste fibres is...
Article
Full-text available
This paper concerns the recovery of construction and demolition waste as coarse recycled aggregates for concrete. Coarse recycled aggregates may be used as a partial or total replacement of natural aggregates, contributing to the circular economy and minimizing landfill disposals as well as the consumption of natural mineral resources. However, con...
Article
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Now more than ever, the construction sector is aiming to adopt more sustainable solutions. To achieve this purpose, more durable solutions must be adopted, making rational decisions at the design and maintenance stages regarding the conditions of environmental exposure and use. In this sense, knowledge regarding the service life of building compone...
Article
Full-text available
The incorporation of recycled aggregates in concrete not only reduces the extraction of natural resources, but also decreases landfill disposal of construction and demolition waste. Hence, environmental impacts and costs are reduced, promoting the use of recycled aggregates and circular economy. However, the impacts of transport depend on the dista...
Article
Global warming is one of the greatest environmental threats worldwide. It is mainly caused by the growing amount of greenhouse gases in the atmosphere, such as argon and carbon dioxide (CO2), among others. Hence, the need to reduce these gases’ emissions, in particular CO2, is imperative. This reduction may be achieved through strategies that allow...
Article
Full-text available
The high cement content of high-performance concrete (HPC) results in improved strength, but also in large shrinkage. The substitution of natural aggregates (NA) with recycled aggregates (RA) notably affects these properties in conventional concrete. This study intends to analyse the effect of the content of RA and their maturity (time elapsed betw...
Article
Full-text available
Steel-concrete-steel (SCS) sandwich panels are manufactured with two thin high-strength steel plates and a moderately low-density and low-strength thick concrete core. In this study, 24 specimens were produced and tested. In these specimens, a new stud-bolt connector was used to regulate its shear behaviour in sandwich panels. The bolts' diameter,...
Article
Alkali-silica reaction (ASR) is considered one of the most concrete degrading agents causing expansion due to a gel formation that swells in contact with water. In this regard, this study investigates ASR through an expansion test of mortars produced with recycled aggregates (RA). The RA were prepared by crushing source concrete (SC) mixes that wer...
Article
Full-text available
In the field of building inspection and diagnosis, uncertainty is common and surveyors are aware of it, although it is not easily measured. This research proposes a model to quantify uncertainty based on the inspection of rendered façades. A Bayesian network is developed, considering three levels of variables: characteristics of the building, façad...
Article
Carbon nanotubes (CNTs) and titanium dioxide (Titania) nanoparticles are simultaneously incorporated in a cement slurry, and their influence on the mechanical characteristics is investigated. Response surface methodology (RSM) is employed to maximize the strength properties at various incorporation ratios of CNT-COOHs, Titania nanoparticles, and su...
Article
Full-text available
This paper contributes to the definition of design clauses for coarse recycled aggregate concrete. One of the main reasons for scepticism towards recycled aggregate concrete is the perceived notion that the heterogeneity of recycled aggregates may increase the uncertainty of the behaviour of concrete. Therefore, the paper uses structural reliabilit...
Article
Full-text available
Construction industries consume huge amounts of potable water during activities such as washing of aggregates, stone crushing, manufacturing, and curing of concrete, mortars, grouts, and wetting of masonry bricks. It is also responsible for wastewater generated during the finishing and cleaning of buildings and construction equipment. Therefore, th...