RCAAP Repository

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior

The purpose of the work is to produce and characterize mechanically sandwich panels to using as ceiling in buildings. The faces of the panels were made of composites reinforced by ramie and sponge gourd fibers, and the cores were made of sponge gourd and expanded polystyrene-EPS. The faces of the sandwich panels were produced with different fiber contents, characterized for tensile mechanical properties and numerically simulated. The EPS and sponge gourd were studied as core materials. The flexural mechanical performance of the panels was tested experimentally and simulated by Finite Element Method. The numerical simulation was also used as tool for qualitative analyzes in the pre-design of the panel components considering variation of materials, fiber contents and thickness of faces and cores. The faces of the sandwich panels were manufactured with composite of polyester reinforced by ramie bidirectional cloth, and combined with the cores of EPS and sponge gourd. The results show the manufactured sandwich panels are feasible for use as ceiling.

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior

Fundação de Amparo a Pesquisa do Estado de Minas Gerais

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior

The main requirement of the user with regard to the constructive system is to have the guarantee of that this is really safe, that is, that it really comes to take care of to the requirements of structural security. The evaluation of structural performance, is one of the forms to determine if the system is really safe; the ideal would be that all and any constructive system, before being launched in the market, it was submitted to the performance evaluations leading in consideration the requirements of the users: security, habitability and support; only in such a way, if it would have the guarantee of that possible problems presented during the evaluation, they would not be repassed the users, being corrected in its initial stage. Therefore, in this work, the performance evaluation happened of inverse form, where the constructive system was evaluated by means of assays of field after the residences being concluded. The carried through assays of field had looked for to evaluate the structural performance of the residences of soil-cement and cellular concrete through the assays of verification of resistance the impacts, occupation loads, verification of the behavior of the leaf (door) submitted the abnormal maneuvers and evaluation through the criteria of the state has limited of use. In such a way, the behavior of these residences through the comparison could be evaluated enters the gotten results in the assays of field and the criteria established for the Projects of Norms of the ABNT nos 02.136.01.001, 02.136.01.002 e 02.136.01.004 (ABNT, 2004) 2004 that it evaluates the performance of residences, well as, to verify the constructive systems that had not taken care of to the established criteria, indicating its imperfections, guaranteeing with this not the occurrence of these in future constructions.

Among all environment problems faced by humanity, this job focus on hydric resources, indispensable environment factor for ecosystems sustentability and human survivor. At public schools units, the inappropriate use of this resource is frequently and also the existence of visible and non visible leaks. With the goal of evaluate the perception index for the use of water at schools, it was selected as study objects for this research twelve public schools at Minas Gerais state. Using questionnaires, interviews and observations, a general research was created in all school units selected about water utilization. This data was used in two types of analyses. The first, it was characterized for all schools the way this input is used. The second, by means of the evaluation of water consume index of users perception index for sustentability water utilization and all the leaks observed, it was tried to establish a relation between these factors. It was concluded that the way the water is used at schools and the existence of leaks are aspects that influence the referred values for indicators of water at this units. But, above all, the users habits related to this input at schools units need to be modified to avoid its waste. So, it s suggested the development, political implementation and Ambiental Education proposals that corroborate and estimulate the racional water utilization.

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior

The evaluation of the satisfaction of residential building users after its delivery to the residents is extremely important to the real estate market. This information enables to create a database to guide the decision taken by the designers in the depeloping of a project of a new product and/or its own improvement. In the case of the introduction of technological inovations to the construction processes key element to the productivity raise the informations related to what and the intensity of the renovations that are accepted by the consumers are important to project a new product to which a bigger degree of industrialization is desired. This work is based on the evaluation of the satisfaction by means of the perception of the user considering two residential buildings that use different building processes and which has as feature the incorporation of a high technological renovation to its production. The first is compound of armed massive walls of reincorced concrete shaped in loco and the second of pre-built panels, compound by a reinforced concrete structure and sealing in ceramic blocks, produced in factories and built in local by the tilt up system. A third residential building, built by the conventional building system (masonry in loco), was also evaluated and accepted as the reference standard.The satisfaction compared by the users of these three different types of residential building was used to evaluate the resident s acceptance level related to the mentioned industrialized houses . The results indicated that a reduction in conservatism of society with respect to industrialized building systems.

This study analyzed the emission of pollutants caused by vehicles, both in a bus station as on the route that vehicles use to their destinations. It was used a theoretical basis and a commercial software, TSIS, that provides the mass discharge of major pollutants emitted by intercity and interstate buses using the bus station of Uberaba, MG. It was simulated the discharge of pollutants emitted by vehicles and it was provided subsidies to studies of routes in relation to the generation of air pollutants due to the concentration of vehicles in trip generation hubes. There were simulated four routes and it was founded the one with emmited the lesser air pollution quantity, which was considered as the environmental route. It is expected to contribute to the city and state agencies, which are in charge in taking an efficient decision to control the vehicular pollution, because automotive gases can cause damages on the population health and on the environment.

His research presented aims to analyze the management of construction and demolition waste ( CDW) in Uberlândia in the context of the implementation of the National Policy on Solid Waste and suggest actions for the purpose of improving the management . Methodologically , we used the visits to municipal secretarial involved with waste , points to irregular deposition, carriers CDW companies to apply a questionnaire and see if the transhipment areas and screening of rubble they comply with the technical standards of ABNT on waste . The results showed that, in Uberlandia , were collected in 2,012 , approximately 452. 000 tonnes of CDW, being 6,66 % of Ecopontos , 39,41 % of carriers and 53, 93 % of the critical points . How PNRS is the principle of non-generation, it is necessary integrated management between the government and private companies that collect and transport the debris . It was observed that the critical points located close to protected areas, the Permanent Protection Area, schools and other points of concentration are unoccupied. Another issue observed is mixed with other types of waste and also a cleaning schedule. The advances that have occurred in the last eight years were just setting the Ecopontos. Still, it is found in places near them, the irregular deposition of debris. Suggestions as partnerships with carters , neighborhood associations , environmental education with the concencionárias power and authority of public supply are presented , as well as lectures on joint efforts in the neighborhoods.

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior

Fundação de Amparo a Pesquisa do Estado de Minas Gerais

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior

Fundação de Amparo a Pesquisa do Estado de Minas Gerais

The multiple uses of water resources has become a difficult task, since the deployment and the continuous improvement of management systems still do not accompany the constant changes that occur in the environment as a function of the anthropic actions. The planning and management of water resources in the watershed scale require use of computational tools that allow the joint modeling of quantity and quality of water in daily and monthly scale. This work of masters had as main objective to evaluate the ability of self-depuration of the middle and lower courses of the river Uberaba (MG), which has strong relevance to water municipalities of Uberaba, Veríssimo, Conceição das Alagoas e Planura (MG). For the period of October 2012 until September 2013, through the AQUATOOL tool, the SIMGES module held the water balance and the GESCAL module simulated quality parameters, dissolved oxygen, biochemical oxygen demand, organic nitrogen, ammonia, nitrate and total phosphorus. In order to make the simulations possible, in twenty sub-sections separated by ten stations of water quality, the coefficients of biochemical reactions were calibrated by the method of trial and error approach. The sensitivity analysis of coefficients Ka, Kd, KNoa and KNai initially calibrated and parameters of quality of the intermediate inputs initially estimated do not present significant variations of water quality in the middle and lower courses of the river Uberaba. The analysis of pollution scenarios, after performing the water balance for the critical flow Q7,10 on every intermediate inputs, it was noted that the parameters nitrate, ammonia and organic nitrogen were in accordance with the limits established in the Normative Deliberation COPAM 01:2008 and the Resolution CONAMA 357:2005. The oxygen parameter dissolved would increase its concentration at 156 %, when compared to the value of the driest month, only in intermediate input that covers the whole urban area of the city of Uberaba (MG) and receiving domestic and industrial effluents without treatment. The parameters DBO5 and Ptotal were the most problematic, which exhibited high values in almost all the inputs, with intermediate exception of the Jataí and Preguiça streams. Thus, it is concluded that the AQUATOOL Tool presented itself favorable in the water management of the Uberaba River s watershed. The topology of the model, deployed in the sub-basin of the Uberaba river in its middle and lower courses, will allow the user of the tool (probably the technician or environmental engineer of the Water and Sewage of Uberaba) to analyze globally or individually, the different aspects of planning and management in this watershed.

Fundação de Amparo a Pesquisa do Estado de Minas Gerais