174 resultados para Construção civil : Materiais : Lodo : Utilização


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Given the large potential impact that the construction industry has on the environment and the need to reduce environmental degradation , environmental certifications are important tools of environmental management. This work deals with the environmental certifications of sustainable buildings LEED and AQUA . This project employed the method of exploratory research to identify the requirements that impose the greatest difficulties in the implementation of LEED and AQUA , surveying the reasons for the choice of certification to be deployed and to analyzing the main benefits perceived by certified organizations. Concepts related to the topic were obtained from the literature, leading to the development of a questionnaire that was applied in organizations that have gone through the above certifications . From the analysis of questionnaires, it was possible to highlight that the main reasons for the adoption of an environmental certificate in the construction industry are linked to economic issues such as greater market recognition and appreciation of the project and what is still needed to invest in environmental awareness industry and the whole society

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One of the majors concerns in society today is to decrease the environmental impact caused by human activities and natural resource exploration. From this need to be more careful with the environment arose, in the field of civil construction, the term sustainable building. Projects that use natural resources rationally, without ceasing to bring comfort and functionality for customers, are becoming more a reality. This paper presents the share of electric energy in a sustainable building, with the analysis of the available renewable energies used in a project, presentation of new constructive techniques and technologies that are constantly emerging to achieve greater energy efficiency, with an appropriate use of energy received, also a decrease of the energy consumed by some devices present in a residence or business

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The present study addresses the application of the Environmental Management System in chicken production on a farm owned by the Nardo brothers, located in the city of Guapiaçu/SP (Brazil). The objectives were to analyze the process of solid waste generation, destination and forms of treatment in this activity; propose measures to reduce the use of potable water for non-potable ends; determine other measures identified through a questionnaire drafted by Embrapa (Brazilian Agriculture Research Cooperative) and administered to employees who have direct involvement in the productive process; pay visits to chicken production enterprises; and employ the guidelines proposed by the National Fowl-Breeding Sanitation Program that guide the application of the Environmental Management System. Adequate management of waste was put into effect through the construction of a compost shed capable of meeting current production demands, in which all procedures were accompanied – from civil construction to the commercialization process of the organic fertilizer generated. The rain-gathering system for the roofs of the pens proposed to reduce the consumption of potable ground water destined for washing the floors of the pens was completely dimensioned and budgeted, allowing the motivated owners to place the project into effect in a timely fashion. Other simpler but no less important proposals were also made in order to bring the production up to the required quality standards.

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Are being released in the construction market in Brazil ventures called Super 6. These businesses sell the promise of delivery of the apartment in six months after the launch of the venture. To meet this deadline are being deployed the constructive method of concrete walls using aluminum shapes. This system basically consists of pouring slabs and walls once, i.e. building up the wall shapes and slab joints. On the walls are used cloth, with reinforcements in vain and corners of walls and on these screens are tied the electrical boxes and conduits. For each tower is used the so-called system of half way, i.e. the system so it is sufficient to mount the Middle deck. Using a concrete which can be deformed in the next day you can lift one deck every two days with ready electric and hydraulicsystem, without having to tow the wall doing only minor fixes in the imperfections after concrete. With this system won an incredible speed in the construction of the structure reducing in almost one-third the length of the work. This work aims to compare in terms of cost-benefit of masonry structural systems and this new concrete wall system called Super 6. For this comparison will be used as parameter values used for the achievement of the Enterprise Portal of Roses of constructor Tenda which is one of the first to use concrete wall system. This project basically consists of seven towers of six floors each and will be budgeted the cost of this project if it were held in structural masonry. From these data it will be possible to make a comparison about the actual beneficial to adopt this system

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Deconstructions, although hardly covered in Civil Engineering courses, are a very important field of study. Due to numerous factors, such as obsolescence, buildings life cycle comes to an end leading to their deactivations. Decommissioning is a process that intends to plan the hole deactivation by providing the cleaning of contaminated areas, avoiding risks to public health, as well as promoting a screening of generated waste, whether dangerous or not, offering their correct disposal or even reuse when possible. Decommissioning must be developed by a plan that covers from the recognition of the area until its releases to other uses. When this procedure is appropriate, attention must be paid to the cost effective of its implementation and to the cleaning standard that the plan intends to reach. The execution of the service allows to reuse the area, becoming productive again

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The objective of the present work was to evaluate Pinus’ glued laminated timber (glulam) beams and steel reinforced glulam beams, using PU mono-component adhesive in lamination step and epoxy adhesive to bond steel bars. The mechanical performance was verified through bending test, and the adopted method based on homogenized section, to considerate the differences between wood and steel mechanical properties. The homogenization section method proved itself effective in obtaining the stiffness of the parts in MLCA. The stiffness of reinforced beams increased 91% in comparison with glulam beams, differing only 5.5 % from value of stiffness calculated

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The growth of urban population associated with the shortage of supply of public infrastructure such as hospitals, kindergartens, schools, among others, has reinforced the need to develop alternative methods that simplify the construction processes and allows for a reduction in these costs works. The conventional processes have increasingly been shown ineffective to solve the problem of demand for different types of urban and rural buildings. Given this fact, industrial construction processes can gain space and have proven to be highly interesting to solve the above problems, in particular, considering the cost-effective and time. Therefore, this study aimed to determine the influence of moisture on the strength of metal plate connections connectors (printed plate with teeth). For the sizing of the links between structural lumber using metal connectors with teeth prints; controlled process variables (drying of the wood and the different moisture contents), and finally found results and compare them with different literatures order to obtain a qualitative efficiency of the process. Some specimens had very low expectations, can be explained by the presence of bone marrow, and pre-existing cracks. Thus, the results were discarded for further analysis and more accurate results

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This work brings to its content proposed deployment of a system of quality management in paving asphalt based on the elaboration of a basic training to meet those entering this area of civil engineering at a technical manual for the implementation of major services running on paving of roads. The training was designed to serve both those entering the field of asphalt paving, synthesizing the complex processes involved in paving services and providing an overview of the steps in implementation thereof, as well as entrants must meet the enterprise user of this system, providing them an idea of the method used by the company designing the paving of roads. The technical manual presented in turn, has 8 (eight) of the main services components of a work of paving, which are: Mobilization and Maintenance of construction site, Regularization and subfloor preparation, execution or sub-base BGS base (graded gravel plain), Execution of sub-base or base BGTC (graded gravel treated with cement), Implementation of subbase or base Macadam hydraulic Priming bituminous waterproofing, asphalt binder Priming and finally the execution flexible pavement - HMA (hot milled asphalt concrete). These services are presented in the form of IT-Education work, this seven items are presented that guide the performance of services, thus providing overall guidelines to perform the services described in it. The development of IT's was based on experiences in day-to-day paving near the theoretical precepts presented in the literature, so the conditions specified in these documents aim to always guide the implementation of services in general, giving the process a versatility major operation, as this work takes into account the dynamics of such services, as well as the variety of their execution according to local conditions and specified in the project. So in general we can say that this ... (Complete abstract click electronic access below)

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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

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A teoria em finanças tem evoluído cada vez mais aproximando a teoria financeira às práticas reais adotadas nas empresas e nos mercados financeiros. A partir de Modigliani e Miller, que contribuíram para o ramo das finanças com a teoria da Irrelevância Financeira, o caminho se abriu para uma série de debates a cerca da importância das variáveis financeiras na determinação do valor da empresa. Foram levantados questionamentos a respeito da perfeição dos mercados e apresentado argumentos como a assimetria de informações, os custos de agência, a restrição financeira e outras implicações à teoria do investimento. Atualmente o que se sabe é que o fator investimento está altamente ligado às finanças e, portanto, relaciona-se com os meios de financiamento presentes no mercado e com a organização interna e financeira das firmas, esse ramo de estudo recebe o nome de Finanças Corporativas. Diante da teoria financeira, o objetivo é analisar a indústria siderúrgica de duas economias atualmente em destaque, Brasil e China através da análise econômico-financeira de quatro empresas de capital aberto do setor: Gerdau, Usiminas, Baosteel e Masteel. Cabe destacar que a indústria siderúrgica é base para outras indústrias, como construção civil, automóveis, máquinas, entre outros e, por isso, é tida como sinalizadora do desenvolvimento econômico de um país, assim também, o Brasil e a China são caracterizados como grandes potenciais emergentes e fontes de atração de investimentos internacionais

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The mining of sand, currently, is essential for urban growth, by providing input for the building industry. The consequences of this mining activity to environmental triggers may be severe and irreversible. Among the major impacts caused by sand mining the riparian vegetation removal is detached. The riparian vegetation is essential for balance and maintaining the local ecosystem. For all that had been shown, is possible to verify the importance of environmental studies in areas wich there are mining. This study aimed specially to assess environmental impacts triggered by a mining, located near the headwaters of the stream Mandu, situated in Ajapi, District of Rio Claro-SP. For this purpose, we used remote sensing techniques and GIS to produce thematic maps of slope, pedology, geology, land use and occupation of the soil, and riparian vegetation, using the capabilities of GIS / ArcGIS. The slope map was based on data from the Cartographic IGC 1979, scale 1:10,000. For the production of pedological and geological maps were used Semi-Detailed soil survey of the state of São Paulo, 1981 (1:100,000) and the Geological Map of Zaine (1994), scale 1:50,000, respectively. Since the maps of Use and Land Occupation and Riparian Forest were obtained by visual interpretation of the image of CBERS 2010 following the merger between the HRC and CCD images. From these mappings, and through multi-criteria analysis, map of susceptibility to erosion was made, which supported the environmental assessment of the studied area, indicating susceptible and unsuitable areas for the deployment of economic activities and urban sprawl. This study serves as a model can be replicated in other watersheds, assisting in the proper use planning and land use, aiming at the rational use of natural resources

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Construction of linear engineering as, roads, ducts and multiducts as roads, has a strong feature of the diversity of land on which they are deployed. This diversity involves properties geological, geomorphological and structural variety. The purpose of this work is to characterize the physical environment in relation to their ability to support the implementation of civil works linear. To achieve this, the use of orbital remote sensing, in this case, Landsat - TM. Interpretative techniques are applied to images in order to assess the forms of relief and drainage found that they can set properties and have built a favorable meaning or not to implement these works. The results and thematic maps presented in this study allow us to promote the geoenvironmental analysis for the planning phase sustainable linear civil constructions (roads and multiducts)

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This scientific research focus on the “Estudo de Impacto de Vizinhança” (EIV, Neighborhood Impact Study), a legal instrument instituted by federal law, and regulated by municipal law, that aims to evaluate the impacts in the neighborhood caused by the implantation or expansion of ventures within the urban zone. The main objective of this research was the formulation of general guidelines for EIV elaboration. Therefore, the following steps were considered: review of the legislation and literature on the theme; assessment of existing municipal legislation about this theme; assessment of EIVs elaborated within Rio Claro (SP); elaboration of the general guidelines for EIV elaboration, which were summarized in a flowchart

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This paper has it is hypotesis on the government program “My Home, My Life” and the assumption that it is a public politic attached to the market logic of financialization of the housing. It is understood that this program encourage capital for the main constructors and incorporated of brazilian heritage elite. It also served as well to promote more rentability to international capital and intensified the sociospacial segregration process as real state speculation has been potencialized. This work aims to present and discuss the program contradictions that have been sustained on the speech of wide subsidy offer and habitance construcution for low income workers - month income until three minimum salaries. Documents have shown that in the first phase of the program, habitance construction for this sector of population corresponded only to 5,5% of total habitation deficit. Businessmen on residance civil construction and public politic representatives have confirmed that the program interests are linked to financial market logic.The real benefits are not for low income workers, but for real state agents through extraordinaty profits of land and the so called new medium workers class(worker class C).We will search for embasement on the country history through the different governments and housing policies, in value theory and the concept of land income to understand the financialization process of the housing. We will also analyse oficial documents and the agents speech involved in real state market to show program contradictions and whose the real benefts are for

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