Water is the most used substance in the world, followed by concrete. Water scarcity is nowadays more common due to concentrated population growth and climate change. Concrete demand is ~15 billion m3 per year fulfilling the need for more and better housing and infrastructure for a growing and wealthier population. Since no other material could fulfil this demand, concrete needs to be produced in a sustainable way, minimizing environmental loads such as water consumption. The water footprint is a tool that measures water use over a products\' life cycle and estimates its potential environmental impacts. Despite the growing concern on water, the existing water footprint methodologies are too complex and require large amounts of data. This study develops a streamlined water footprint methodology for concrete production, simple enough to be useful to the industry and robust enough to be environmentally meaningful. An extensive study on existing water footprint methodologies have been conducted. Then a streamlined methodology was proposed focused on the water flows that are more relevant in concrete production including water quantity and quality letting to meaningful results with less data. Typical water inventory includes the batch water (150-200 H kg/m3), dust control (500-1500 H kg/day), truck washing (13-500 H kg/m3), cement production (0.185-1.333 H kg/kg) and aggregates production (0.116-2.0 H kg/kg). Regarding water quality, the most critical flows - Zinc, Lead, Nitrate, Nitrogen oxides and Sulfur dioxide- were identified based on the contribution of these flows to the potential environmental impacts, the control or influence that the concrete producer has on the activities were these flows appear and the feasibility to measure these flows on site. Concrete water footprint varies due to mix design, technological routes, location and choice of impact assessment method. The results are of interest to the research community as well as to the stakeholders of the cement and concrete industries and a contribution to sustainable construction since study of water footprint is fundamental to improve water efficiency. / A água é a substância mais utilizada no mundo, seguida pelo concreto. A escassez de água é hoje em dia mais comum devido ao crescimento populacional concentrado e às mudanças climáticas. A demanda de concreto é ~15 billion m3 por ano que atende a demanda de mais e melhor moradia e infraestrutura para uma população crescente e mais prospera. Uma vez que nenhum outro material pode satisfazer essa demanda, o concreto precisa ser produzido de forma sustentável, minimizando as cargas ambientais, como o consumo de água. A pegada hídrica é uma ferramenta que mede o uso da água ao longo do ciclo de vida de um produto e estima seus potenciais impactos ambientais. Apesar da crescente preocupação com a água, as metodologias existentes de pegada hídrica são muito complexas e exigem grandes quantidades de dados. Este estudo desenvolve uma metodologia optimizada de pegada hídrica para produção de concreto, simples o suficiente para ser útil para a indústria e robusta o suficiente para ser ambientalmente significativa. Um estudo extensivo em metodologias existentes da pegada da água foi conduzido. Em seguida, uma metodologia optimizada foi proposta focada nos fluxos de água que são mais relevantes na produção de concreto, incluindo quantidade e qualidade, permitindo resultados significativos com menos dados. O inventário de água típica inclui a água de mistura (150-200 H kg/m3), controle de poeira (500-1500 H kg/dia), lavagem de caminhões (13-500 H kg/m3), produção de cimento (0.185-1.333 H kg/kg ) e produção de agregados (0.116-2,0 H kg/kg). Em relação à qualidade da água, os fluxos mais críticos -Zinco, Chumbo, Nitrato, Óxidos de nitrogênio e Dióxido de enxofre-foram identificados com base na contribuição destes fluxos para os potenciais impactos ambientais, o controle ou a influência que o produtor de concreto tem sobre as atividades onde esses fluxos aparecem e a viabilidade para medir esses fluxos no local. A pegada de água de concreto varia devido à formulação, rotas tecnológicas, localização e escolha do método de avaliação de impacto. Os resultados são de interesse para a comunidade de pesquisa, bem como para as partes interessadas das indústrias de cimento e concreto e uma contribuição para a construção sustentável, uma vez que o estudo da pegada hídrica é fundamental para melhorar a eficiência da água.

Darbo aktualumas. Pastato reikšmė žmogaus gyvenime labai svarbi, nes jis negali išgyventi neturėdamas stogo virš galvos. Didžiąją laiko dalį žmogus praleidžia uždaroje patalpoje – namuose bei darbo vietoje. Nuo pastato kokybės priklauso žmogaus sveikata, savijauta bei darbingumas. Darbo tikslas – nustatyti subalansuotos statybos pastato ekologinę vertę taikant verbalinės analizės principus. Darbo uždaviniai: 1. Atlikti subalansuotos statybos ekologiniu aspektu teorinę analizę. 2. Išanalizuoti subalansuotos statybos ekologiniu aspektu vertinimo metodiką. 3. Pritaikyti verbalinės sprendimų analizės pagrindinius principus vertinant subalansuotą statybą ekologiniu aspektu. 4. Sukurti subalansuotos statybos ekologiniu aspektu vertinimo kriterijų klasifikaciją ir pasinaudoti ja. Nustatyti turimų subalansuotos statybos ekologiniu aspektu lygius pagal verbalinės sprendimo analizės metodą CLARA (realių alternatyvų klasifikacija). 5. Nustatyti pastato ekologinę vertę pagal verbalinės sprendimų analizės metodą CLARA. Tyrimo metodas. Šiame darbe taikyti du metodai. Rašant teorinę dalį, buvo susisteminta mokslinė literatūra, atlikta įvairių autorių mokslo darbų, kuriuose nagrinėjama subalansuota statyba bei jos vertinimas, ir kitos susijusios literatūros, analizė. Atliekant pastato ekologinį vertinimą buvo panaudotas verbalinės sprendimo analizės metodas CLARA. Išvados. Išanalizavus mokslinę literatūrą buvo sudaryti verbalinės sprendimo analizės kriterijai, įvesti į programą CLARĄ ir... [toliau žr. visą tekstą] / Relevance of the paper. Building is very important for man life, because he could not live without roof over head. The biggest part of the life man spends in close area – in the house and office. Man health, feeling and efficiency belong on quality of the building. The objective of the paper – to evaluate building of sustainable construction with emphasis of ecology. The goals of the paper: 1. to carry out the theoretical problem analysis of the sustainable construction; 2. to analyze the methodology of sustainable construction evaluation; 3. to use verbal decision analysis main features to evaluate sustainable construction with emphasis on ecology; 4. to create features to evaluate sustainable construction with emphasis on ecology. To use verbal decision analysis methodology CLARA to evaluate sustainable construction with emphasis on ecology. 5. to evaluate building ecology value on verbal decision analysis methodology CLARA. Conclusion. Created verbal decision analysis methodology CLARA can be used in practice. Structure: introduction, 4 sections, conclusions and suggestions, references. Thesis consist of: 67 p. text without appendixes, 15 pictures, 4 tables, 70 bibliographical entries.

Statybai, kaip vienai iš žmogaus ūkinės veiklos šakų, sparčiai keičiančiai gyvenamąją aplinką kiekybiniu ir kokybiniu požiūriais, skiriamas išskirtinis dėmesys. Statyba šiame darbe vertinama atsižvelgiant į darnumo principus. Norint sėkmingai integruotis į Europos Sąjungą, reikalingi infrastruktūros planavimo ir plėtros pokyčiai, būtina gerinti gyvenimo ir aplinkos kokybę. Šalies politika, taip pat ir darnios statybos klausimais, turi būti adekvati Europos valstybėms. Pastaraisiais metais darniai statybai, tame tarpe ir presuotų šiaudų panaudojimui, skiriamas didelis dėmesys ne tik populiarioje literatūroje: laikraščiuose, žurnaluose, bet ir mokslinėje literatūroje. Rašomi ne tik straipsniai, bet ir knygos. Atsinaujinančių statybinių medžiagų panaudojimo klausimais atliekami užsakomieji moksliniai tyrimai, ruošiamos disertacijos. Atsižvelgiant į tai galima teigti, kad ir Lietuvoje bus suformuota valstybinė darnaus vystymosi kriterijais paremta statybos politika. Tačiau kol kas, siekiant darnumo statybos pramonės srityje, tenka vadovautis bendrais aplinkosauginiais ir darnaus vystymosi idėjas deklaruojančiais politiniais ir teisiniais dokumentais. Lietuvoje darnios statybos plėtros galimybės nėra vertintos. Magistro darbą sudaro penki skyriai, išvados ir pasiūlymai bei naudotų literatūros šaltinių sąrašas. Pirmajame skyriuje nagrinėjama darnaus vystymosi samprata ir raida. Antrajame – statybos sektoriaus poveikis aplinkai. Trečiajame ir ketvirtajame skyriuose nagrinėjama darni... [toliau žr. visą tekstą] / The special attention is given for the construction as one of the branches of human economic activities, rapidly modifying the living environment in quantitative and qualitative approaches. In this work construction is evaluated by taking into consideration principles of sustainability. In order to successfully integrate into the European Union changes of infrastructure planning and development are required, it is necessary to improve the quality of life and environment. Country policy, as well as sustainable construction issues, must be adequate to the European countries. In recent years the great attention is paid for the sustainable construction including the use of compressed straw not only in the popular literature: newspapers, magazines, but also in the scientific literature. Not only articles are written, but books as well. Scientific researches are performed in the issues of renewable construction material use as well as the dissertations are prepared. Taking this into consideration it can be stated that Lithuania will establish a state construction policy based on sustainable development criteria. However, at the moment in an attempt of sustainability in the sphere of construction industry, we have to follow general environmental, political and legal documents declaring the ideas of sustainable development. In Lithuania the possibilities of sustainable construction expansion have not been evaluated. Master thesis consists of five chapters, conclusions and... [to full text]

L’introduction du développement durable apporte de nouvelles préoccupations environnementales au niveau de la construction et de la rénovation résidentielles, une industrie qui représente un marché économique important au Canada. En plus d’engendrer plusieurs impacts sur l’environnement, la conception actuelle ne permet pas d’accommoder le changement initié par l’évolution des pratiques, les avancées technologiques, mais également par l’évolution des patrons de vie des occupants. Dans un premier temps, la revue de littérature dresse le portrait de l’industrie de la construction, rénovation et démolition (CRD) au Canada, ainsi que le profil de gestion des débris de CRD. Ensuite, une analyse documentaire traite de différents outils de conception développés pour améliorer la performance du secteur : 3RV-E, écoconception, écoconstruction et LEED®. De plus, la recension des écrits permet également de cerner les concepts d’adaptabilité et de flexibilité au niveau du bâtiment et dans les approches et mouvements émergents en architecture. Cette démarche nous amène à établir l’hypothèse que l’intégration des critères d’adaptabilité et de flexibilité au niveau du logement aurait pour effet d’améliorer l’adéquation entre les besoins évolutifs des occupants et les nouvelles considérations environnementales. Au niveau méthodologique, l’analyse du cycle de vie simplifiée par l’Eco-indicator99 encadre l’analyse environnementale de l’ossature de trois types de construction de cloison. De cette évaluation, on conclut que c’est la construction traditionnelle à ossature de bois qui produit le moins d’impacts. Dans l’ordre suivant la proposition de construction de cloison à ossature d’aluminium, plus adaptable et flexible, et finalement la construction à ossature d’acier qui est le système le plus dommageable. Par contre, en intégrant le facteur temporel, cette analyse démontre que l’intégration de l’adaptabilité et de la flexibilité procure plusieurs cycles de vie et de rénovation au produit et à ses composantes. Finalement, ces concepts offrent également le potentiel de diminuer les impacts générés par la construction et la rénovation, un constat qui mériterait d’être abordé dans une approche plus systémique. / The introduction of sustainable development brings new environmental concerns on an important Canadian market industry: construction and residential renovation. Not only does the current concept have a considerable impact on the environment, it also can’t follow up with the development of practices, technologies and occupants’ lifestyle. First, a literature review draws a picture of the construction, renovation and demolition industry (CRD) in Canada and it outlines the CRD rubbles management profile. Then a documentary analysis drafts different concept tools that were developed to improve the industry’s performance. They are 3RV-E, ecodesign, sustainable construction and LEED®. The papers review also explores the adaptability and flexibility concepts on the construction sector and on the emerging architectural trend. This approach brings us to the hypothesis that the integration of the adaptability and flexibility criteria to the housing sector will improve the adequacy between the progressive needs of the occupants and the new environmental issues. On a methodological perspective, the simplified lifecycle analysis performed with the Eco-indicator99 overviews the environmental analysis of three types of partition construction. The outcome of this evaluation is that the one with the less environmental impact is the traditional construction with a wooden framework, followed by the construction with an aluminum framework which is adaptable and flexible, and in third place, the construction with a steel framework which is the most harmful to the environment. On the other hand, adding the time factor to this analysis demonstrates that the integration of the adaptability and flexibility criteria brings a number of renovation and life cycles to the product and its components. In the end, these concepts present us with a potential of reducing the impacts of construction and renovation on the environment and that’s an assessment that would need to be approached systematically.

Using recycled concrete aggregate (RCA) as a replacement for natural aggregate in new concrete is a promising way to increase the overall sustainability of new concrete. This has been hindered, however, by a general perception that RCA is a sub-standard material due to the lack of technical guidance, specifically related to long-term durability, on incorporating RCA into new concrete. The goal of this research project was to determine whether current testing methods could be used to assess the potential alkali-silica reactivity of concrete incorporating RCA. The test methods investigated were ASTM C1260 and ASTM C1567 for assessing natural aggregate susceptibility to alkali-silica reactivity (ASR), and the ability of supplementary cementitious materials (SCMs) to mitigate ASR, respectively. Seven different RCA sources were investigated. It was determined that ASTM C1260 was effective in detecting reactivity but expansion varied based on RCA processing. Depending on the aggregate type and the extent of processing, up to a 100% increase in expansion was observed. Replicate testing was performed at four university laboratories to evaluate repeatability and consistency of results. The authors recommend modification to the mixing and aggregate preparation procedures, when testing the reactivity of RCA using ASTM C 1260. This study also investigated the efficacy of replacing portland cement with supplementary cementitious materials (SCMs), known to mitigate alkali-silica reaction (ASR) in concrete with virgin aggregates, to control ASR in concrete incorporating reactive RCA. The SCMs investigated as part of this study included: fly ash (class F), silica fume, and metakaolin. The results of modified alkali-silica reactivity tests, ASTM C1260 and ASTM C1567 (AMBT), are presented for two different recycled concrete aggregates when using 100% portland cement, binary blends of portland cement and fly ash, and ternary blends of portland cement, fly ash and metakaolin or silica fume. The results indicate that SCMs can effectively mitigate ASR in concrete made with RCA. A 40% replacement of portland cement with class F fly ash was able to reduce expansions to below 0.10% in the AMBT for concrete containing 100% of a highly reactive recycled concrete aggregate. A ternary blend, however, of portland cement with a class F fly ash and metakaolin was most effective for both RCAs tested in this study. Higher levels of mitigation may be required for some RCAs, compared to the level required to mitigate ASR in concrete made with their original natural aggregates, depending on the age and composition of the RCA. / Graduation date: 2012

Thesis (MA)--Stellenbosch University, 2013. / ENGLISH ABSTRACT: The aim of the study was to determine the application of green building practices in Stellenbosch. In order to achieve this aim certain objectives had to be met. The first objective was to retrieve national and international literature on green building initiatives. Six main sections were discussed in the literature namely, climate change and the environment, the built environment, the concept of sustainability in cities and buildings, green building designs and practices, green buildings, green building councils and the different green rating systems, with a specific focus on the Green Star SA rating tool. The second objective was to discuss three case scenarios in Stellenbosch that practice green initiatives. The case scenarios selected are Distell Group Limited, Spier wine estate and the new Remgro head office Millenia park. Buildings in Stellenbosch selected by means of probability sampling. A total of 35% of all commercially zoned buildings in the Stellenbosch core were selected to participate in the sample. The land zoning maps from the Stellenbosch municipality was obtained and relevant buildings were sampled. Nine of the sampled buildings were heritage buildings (older than sixty years) and seventeen were buildings from the modernist era (younger than sixty years). Nine architect companies in Stellenbosch were also sampled. The respondents were determined by means of haphazard sampling. The third objective was to design two questionnaires, one for building owners and another for architects. The first questionnaire developed for building owners was divided into two sections. The first section determined what green practices owners are incorporating into their office buildings. These green practices developed in the questionnaire focused on the use of natural light in the buildings, LED lights, indoor ventilation, recycling methods, water saving methods, energy saving methods and whether management plans exist to monitor and evaluate the buildings energy usage. The second section focused on the perception of the building owners. The respondents had to rate the importance of the above mentioned green initiatives on a scale of one 1 (being not at all) to 5 (being very important). The fourth objective was to develop a questionnaire for architects. The questionnaire determined whether green designs are incorporated by architects and if there is a greater demand for green designs by clients. The findings of the study revealed that respondents find natural light and air quality to be the most important aspects in an office. Recycling is applied by 93% of respondents. Less than 10% of respondents have installed solar panels, HAVC systems, rain water harvesting or other water management systems. Architects find that there has been an increase in the demand for green designs, but that there is a lack of knowledge of green initiatives by building practitioners. The main recommendations of the study are that the concept of green development be broadened into other spheres apart from planners. Education and training of green building must be available to all building owners and practitioners. Sustainable materials should be more accessible to building practitioners and these materials should be made available locally. Finally more buildings should be refurbished or renovated rather than be demolished to prevent waste and secure open spaces. / AFRIKAANSE OPSOMMING: Die doel van die studie was om die toepassing van groen initiatiewe in Stellenbosch te bepaal. Ten einde hierdie doel te bereik moes daar aan sekere doelwitte voldoen word. Die eerste doelwit was om nasionale en internasionale literatuur oor groen inisiatiewe te verkry. Ses hoof afdelings is bespreek in die literatuur, naamlik verandering van die klimaat en die omgewing, die Beboude-omgewing, die konsep van volhoubaarheid in stede en geboue, groen gebou ontwerp en praktyke, die rade vir omgewings vriendelike geboue en groen evalueering stelsels. Die tweede doelwit was om drie gevalle studies is Stellenbosch te bespreek wat groen inisiatiewe beoefen. Die gevalle studies wat bespreek word is Distell Eiendoms Beperk, Spier landgoedere en Remgro se nuwe hoof gebou Millenia Park. Waarskynlikheids steekproewe is gebruik om die geboue te identifiseer vir die veld werk, ʼn totaal van 35% van al die kommersiëele gesoneerde geboue in die Stellenbosch-kern is geselekteer om deel te neem in die steekproef. Die landsoneringskaarte van die Stellenbosch-munisipaliteit is verkry en betrokke geboue was geselekteer. Nege van die geselekteerde geboue was historiese geboue (ouer as sestig jaar) en sewentien was geboue van die modernistiese era (jonger as sestig jaar). Nege argiteks maatskappye in Stellenbosch is ook geselekteer vir die studie. Die respondente is deur middel van’n lukrake steekproef bepaal. Die derde doelwit was om twee vraelyste te ontwerp, een vir die eienaars van die geboue en die ander vir argitekte. Die eerste vraelys wat ontwikkel is vir die gebou-eienaars is verdeel in twee afdelings. Die eerste afdeling bepaal watter groen praktyke eienaars implimenteer in hul kantoor geboue. Die groen praktyke in die vraelys fokus op die gebruik van natuurlike lig in die geboue, LED ligte, binnenshuis ventilasie, herwinning, water besparing metodes, energie besparing metodes en bestuur planne wat opgetrek is om die energie verbruik van geboue te monitor en te evalueer. Die tweede afdeling van die vraelys fokus op die persepsie van die gebou-eienaars. Die respondente het die belangrikheid van die bogenoemde groen inisiatiewe gradeer op 'n skaal van een 1 (glad nie) tot 5 (baie belangrik). Die vierde doelwit was om 'n vraelys te ontwikkel vir argitekte. Die vraelys bepaal of groen ontwerp op geneem is deur argitekte en indien daar 'n groter aanvraag na groen ontwerpe deur kliënte is. Die bevindings van die studie het getoon dat die respondente natuurlike lig en die gehalte van binnenshuis lug as die belangrikste aspekte in di kantoor ag. Herwinning is deur 93% van respondente toegepas. Minder as 10% van die respondente het sonpanele, HAVC stelsels, reën wateropvangsisteme of ander watersparingssisteme geinstaleer. Argitekte vind dat daar 'n toename in die vraag na groen ontwerpe is, maar dat daar 'n gebrek aan kennis oor groeninisiatiewe is deur prakisynes . Die aanbevelings van die studie is dat die konsep van groen ontwikkeling versprei moet word na ander sfere behalwe beplanners. Inligting en opleiding oor omgewingsvriendelike geboue moet beskikbaar wees aan alle gebou-eienaars en praktisynes. Volhoubare materiale moet meer toeganklik wees vir bou praktisynes en hierdie materiale moet ook plaaslik beskikbaar gestel word. Laastens moet meer geboue opgeknap word eerder as om gesloop te word, om afval te voorkom en oop ruimtes te behou.

Environmental changes are great challenges that humanity must face. This has spurred a flurry of activities aimed to lower our impact on our environment. This essay focuses on the aspects that influence decision makers when choosing construction materials as well as a look into whether wood has a lower impact on the environment compared to concrete when building houses. The materials have been assembled through surveys, interviews and literary studies. The primary factor that was given most weight among entrepreneurs and architects were robustness and safety, and concrete was in that regard favoured over wood. It is also possible that already established economical structures support the use of concrete instead of wood. Environmental aspects are not reflected among entrepreneurs as very important factors when it comes to choosing materials and for change to occur there needs to be more information supporting that wood can be as robust as concrete in structures for it to be similarly prioritised. Concerning wood’s impact on the climate and the environment compared to concrete there is a significant difference in woods favour if only the construction and production phase of the house’s life cycle is examined. However, there are studies that show that depending on the material used and the time the house is expected to remain there are instances where wood has a higher environmental impact than concrete. Conclusively, wood is not always more environmentally friendly. The environmental impact of a material in construction depends heavily on the life span of the house.

Orientador: Manuel Baldomero Rolando Berrios Godoy / Banca: Silvia Aparecida Guarnieri Ortigoza / Banca: Salvador Carpi Junior / Resumo: A presente pesquisa consistiu em investigar possíveis causas que levam à persistência da deposição irregular de Resíduos da Construção Civil - RCD -, em vias e logradouros públicos da cidade de Parnaíba/PI, de forma a gerar subsídios para a implementação de políticas públicas relacionadas à limpeza urbana municipal, com a finalidade de contribuir para a melhoria da saúde, bem como, também, para a qualidade de vida e ambiental no município. Para a definição das causas sociais que geram o problema, buscou-se identificar as categorias participantes que, direto ou indiretamente, estão envolvidas com o processo das deposições irregulares de RCD, que relações se estabelecem entre elas, quais as expectativas de umas em relação às outras, e que sanções existem, e são aplicadas, para cada categoria de participantes, quando da tentativa de controlar o comportamento de outras categorias envolvidas. As possíveis causas da persistência da deposição irregular de RCD em áreas de domínio público da cidade de Parnaíba estão relacionadas à inexistência de política pública municipal que considere os problemas dos RCD; aos altos investimentos de recursos na coleta corretiva, com a contínua remoção dos resíduos sólidos em geral, sem um acompanhamento efetivo; à falta de expressividade e à não efetividade de ações de controle por parte da administração municipal local, quanto à questão das deposições irregulares em vias e logradouros públicos do município; à indiferença da administração municipal quanto à legislação dos serviços de saneamento, no sentido de fazer valer as regulamentações federais e municipais; à substancial economia obtida pelos geradores e transportadores, que externam para a cidade os custos de transporte e deposição; ao recebimento de valores significativos por parte de empresas contratadas pela administração municipal, ... (Resumo completo, clicar acesso eletrônico abaixo) / Abstract: This research consists in investigating possible reasons which lead to the persistence of irregular deposition of construction and demolition waste (CDW) in public ways and streets in Parnaíba-PI, in a manner of generating subsidies for implementation of public policy connected with the municipal urban sanitation, with the purpose of contributing for the health improving, as also, for the quality of life and ambient in the Municipality. To define the social reasons that generate the problem, it was necessary to identify the participant categories that, in a direct or indirect way, are involved with the irregular deposition of Construction and Demolition Waste process, what kind of connections are established among them, what are their expectations, and what sanctions exist and are applied for every participant categories regarding the attempt to control the behavior of others involved categories. The possible causes of the persistence of irregular CDW in public domain areas in Parnaíba-PI are connected with: the inexistence of a Municipal public policy that looks upon the problems of the CDW; the high investments of resources about the corrective collect with the continuous removal of solid waste, in general without an effective monitoring; the inexpressive and ineffective actions from the Municipal Administration about the irregular deposition of construction and demolition waste in public ways and streets; the indifference of the Municipal Administration about the legislation concerning the sanitation services in order to enforce the federal and municipal regulations; the substantial saving obtained from the generators and transporters, who externalize to the city the costs of transport and deposition; with the receiving of highly expressive values, from companies contracted for the Municipal Administration, as payment for public cleaning services, - collect, weeding and sweeping ... (Complete abstract click electronic access below) / Mestre

[pt] O conceito da construção sustentável surge após discussões por todo o mundo acerca da possibilidade de desenvolvimento de forma sustentável. Paralelamente à adoção de práticas de sustentabilidade em novos projetos de empreendimentos, surge a necessidade de tornar sustentáveis edificações já existentes. Com isto, observa-se a dificuldade de se encontrar critérios de sustentabilidade para construções existentes aplicáveis no cenário brasileiro. O presente estudo desenvolve-se com uma inicial introdução dos principais certificados, selos e qualificações sustentáveis existentes no Brasil. Na sequência elaborados estudos de caso em duas edificações de diferentes características - ano de construção, bairros, entre outros - na cidade do Rio de Janeiro, nos quais foram analisados e aplicados os critérios de avaliação que constituem o Selo Casa Azul criado a adotado pela CAIXA. Como último passo indicados os obstáculos que cada edificação apresentou para atingir melhores resultados de acordo com o Selo. / [en] The study of the main certifications, seals and qualifications applied in Brazil and in the world reveals the advantages of these certificates for buildings that seek to encourage the practice of sustainability in the city of Rio de Janeiro. Over the next two decades there has been an impasse between developed countries and those who advocated environmental preservation, since the former believed in capitalist economic development only by changing raw materials. Finally, in the 1980s the term sustainable development was created, whose definition consisted in the defense of a development able to meet current needs without harming the possibility of future generations to meet their own needs. Due to this growing concern with the environment, the construction sector needed to adapt to new requirements, changing methods and creating means to control and supervise sustainable practices, through environmental certificates such as LEED, AQUA-HQE, Selo Casa Azul and Qualification Qualiverde.

The early stages of the construction process are crucial for achieving an optimal product from an environmental and sustainable perspective. It is primarily organizational and human factors limiting environmental and sustainability efforts. The barriers are described as time and cost constraints, knowledge, experience-feedback, ability to handle tools and a heterogeneous culture. Development contributes to change that need to be addressed with increased commitment and interest in all levels of the organization. The environmental and sustainability aspects need to be integrated into all working methods involving employees to increase understanding and raise knowledge. / De tidiga faserna inom byggprocessen är avgörande för att nå en optimal produkt ur ett miljö- och hållbarhetsperspektiv. Det är främst organisatoriska och mänskliga faktorer som begränsar miljö- och hållbarhetsarbete. Dessa barriärer beskrivs som tid- och kostnadsrestriktioner, kunskap, erfarenhetsåterföring, förmåga att hantera hjälpmedel samt en heterogen kultur. Utveckling bidrar till förändringsströmmar som behöver bemötas med ökat engagemang och intresse inom alla led av organisationen. Miljö- och hållbarhetsaspekten behöver integreras inom samtliga arbetsmetoder med involvering av medarbetare för att öka förståelse och höja kunskapsnivån.