Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2017-11-03T20:42:54Z No. of bitstreams: 1 ItaloValeMonteJunior_DISSERT.pdf: 3794265 bytes, checksum: 2fa1d239a510f53e7a837ddbf41b3d87 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2017-11-16T23:58:32Z (GMT) No. of bitstreams: 1 ItaloValeMonteJunior_DISSERT.pdf: 3794265 bytes, checksum: 2fa1d239a510f53e7a837ddbf41b3d87 (MD5) / Made available in DSpace on 2017-11-16T23:58:32Z (GMT). No. of bitstreams: 1 ItaloValeMonteJunior_DISSERT.pdf: 3794265 bytes, checksum: 2fa1d239a510f53e7a837ddbf41b3d87 (MD5) Previous issue date: 2017-08-25 / A atividade da constru??o civil promove um grande passivo ambiental devido ao elevado consumo de energia e recursos naturais n?o renov?veis, al?m de gerar grandes volumes de res?duos s?lidos que muitas vezes s?o destinados inadequadamente. Desse modo, a utiliza??o dos res?duos s?lidos de constru??o e demoli??o (RCD) como agregado reciclado torna-se uma alternativa vi?vel para mitigar o impacto da constru??o civil ao meio ambiente. O agregado reciclado de concreto (ARC), principalmente, a fra??o grossa (ARCG, com di?metro maior que 4,8 mm), apresenta qualidade superior aos agregados reciclados misto, podendo ser utilizado na produ??o de novos concretos. Por outro lado, a fra??o fina (ARCF, com d < 4,8 mm), cont?m maior teor de argamassa aderida ao gr?o de ARC, apresentando qualidade inferior ao ARCG o que dificulta sua utiliza??o em novos concretos ou argamassas. Neste contexto, o objetivo dessa pesquisa ? avaliar o comportamento de argamassas para revestimento com a substitui??o do agregado natural (AN) pelo res?duo de concreto (ARCF). Avaliou-se experimentalmente a rela??o cal/cimento (de 0,3 a 1,7) e a substitui??o do AN por ARCF (de 15 a 85%) na produ??o de 14 argamassas, sendo 9 delas com ARCF e 5 de refer?ncia, padronizando o perfil granulom?trico dos AN e ARCF, a rela??o ligante/agregado em 1:3 e o ?ndice de consist?ncia em 260 mm. Inicialmente avaliou-se as caracter?sticas f?sicas, qu?micas, mineral?gicas e microestruturais dos agregados por an?lise da massa unit?ria, da massa espec?fica, granulom?trica a laser, BET, FRX, DRX e MEV, al?m da Abras?o Los Angeles, teor de argamassa, absor??o de ?gua e ?ndice de reatividade para o ARCF. Em seguida, avaliou-se as propriedades das argamassas nos estados anidro, pl?stico e endurecido atrav?s dos ensaios de granulometria por peneiramento, massa unit?ria, densidade de massa, ?ndice de consist?ncia, varia??o de massa, absor??o de ?gua por capilaridade e imers?o, resist?ncias ? tra??o na flex?o e compress?o, m?dulo de elasticidade din?mico, resist?ncia de ader?ncia e ?ndice de fissura??o. Constatou-se que os valores m?dios do teor de argamassa, perda por abras?o Los Angeles, absor??o de ?gua e densidade no ARCF, assemelham-se ?s indica??es da literatura. Nas argamassas ocorreu uma redu??o da densidade de massa com o aumento do ARCF que tamb?m contribuiu para o aumento das resist?ncias ? tra??o na flex?o, compress?o e m?dulo de elasticidade. Sem indica??o de fissuras aos 56 dias de cura, nas argamassas com ARCF, a resist?ncia de ader?ncia obteve valores m?nimos aceit?veis (0,3 MPa) para revestimento, por?m n?o apresentaram signific?ncia estat?stica. / The construction activity promotes a large environmental liability due to the high consumption of energy and non-renewable natural resources, besides generating large volumes of solid waste that are often inadequately destined. Thus, the use of solid construction and demolition wastes as a recycled aggregate becomes a viable alternative to mitigate the impact of construction on the environment. The recycled concrete aggregate (RCD), mainly the coarse fraction (CRCA, with diameter greater than 4.8 mm), presents superior quality to the mixed recycled aggregates, being able to be used in the production of new concretes. On the other hand, the fine fraction (FRCA, with d < 4.8 mm), contains a higher content of mortar adhered to the RCA grain, presenting inferior quality to the CRCA and restricting its use in new concretes or mortars. In this context, the objective of this research is to evaluate the behavior of mortars for coating with the substitution of the natural aggregate (NA) for the concrete residue (FRCA). The lime / cement ratio (from 0.3 to 1.7) and the substitution of NA by FRCA (from 15 to 85%) in the production of 14 mortars were evaluated experimentally, 9 of them with FRCA and 5 of reference, standardizing The grain size profile of the NA and FRCA, the binder / aggregate ratio in 1: 3 and the consistency index in 260 mm. The physical, chemical, mineralogical and microstructural characteristics of the aggregates were evaluated by analyzing the bulk density, the specific apparent weight, laser grain size, BET, FRX, DRX and MEV, as well as Los Angeles abrasion, mortar content, water absorption and reactivity index for FRCA. Then, the properties of the mortars in the anhydrous, plastic and hardened states were evaluated through the granulometry tests by sieving, bulk density, consistency, weight variation, water absorption by capillarity and immersion, flexural tensile and compressive strenght, dynamic modulus of elasticity, adhesion strength and susceptibility cracking. It was found that the average values of mortar content, Los Angeles abrasion loss, water absorption and density in FRCA, are similar to those reported in the literature. In the mortars a reduction of bulk density occurred with the increase of the FRCA that also contributed to the increase of flexural tensile, compression strengths and modulus of elasticity. No cracks were observed at 56 days of cure, in FRCA mortars, the adhesion strength obtained minimum acceptable values (0.3 MPa) for coating, but did not present statistical significance.

Submitted by Ricardo Cedraz Duque Moliterno (ricardo.moliterno@uefs.br) on 2017-07-12T01:22:06Z No. of bitstreams: 1 Disserta??o Daiane do Carmo.pdf: 4697687 bytes, checksum: a37b7f9d37bd854f2fb6862074c46fd4 (MD5) / Made available in DSpace on 2017-07-12T01:22:06Z (GMT). No. of bitstreams: 1 Disserta??o Daiane do Carmo.pdf: 4697687 bytes, checksum: a37b7f9d37bd854f2fb6862074c46fd4 (MD5) Previous issue date: 2016-09-14 / Funda??o de Amparo ? Pesquisa do Estado da Bahia - FAPEB / The water balance is an important aspect on development of a landfill project, and the choice of material for the cover layer will influence the generation of percolated liquids. Considering the composition and characteristics of cover layers, it becomes necessary the conventional material substitution. Therefore, this study compared the construction civil waste (CCW) to the soil from the university campus - UEFS in Feira de Santana/BA as used in evapotranspiration cover layer for landfill, using the water balance models Fenn et al. (1975) and S?o Mateus et al. (2012). The results showed that both materials have the same behavior for the Fenn et al. (1975) method, where the CCW generates less liquid than MSW to the ground. By the method of S?o Mateus et al. (2012), the CCW and the soil allow the passage of water to the MSW in different behaviors, and the soil promoted greater liquid infiltration, about 95.5% higher than the CCW. When the methods were compared, S?o Mateus et al. (2012) presented higher water infiltration to the MSW in the simulation with the soil, in relation to the method of Fenn et al. (1975), and smaller with the CCW, this occurs due to the distinction of the input parameters for the materials, highlighting the influence of the permeability coefficient in the water balance. / O balan?o h?drico ? parte importante no processo de elabora??o de um projeto de aterro sanit?rio, visto que a escolha do material para a camada de cobertura influenciar? na gera??o de l?quidos percolados. Tendo em vista a necessidade da utiliza??o de materiais para a composi??o das diversas camadas dos sistemas de cobertura, torna-se indispens?vel o estudo de materiais alternativos para a substitui??o dos materiais usados originalmente. Para tanto, este trabalho comparou o res?duo da constru??o civil (RCC) com o solo do campus universit?rio da UEFS em Feira de Santana/BA utilizados como camada de cobertura para aterro sanit?rio, utilizando os modelos de balan?o h?drico de Fenn et al. (1975) e S?o Mateus et al. (2012). Os resultados mostraram que, pelo m?todo de Fenn et al. (1975), ambos os materiais possuem comportamento semelhante, sendo que o RCC infiltrou menor quantidade de ?gua para o res?duo s?lido urbano (RSU) do que o solo. Pelo m?todo de S?o Mateus et al. (2012), o RCC e o solo permitem a passagem de ?gua para o RSU em comportamentos distintos, sendo que o solo promoveu maior infiltra??o de l?quidos, cerca de 95,5% maior do que o RCC. Quando comparados os m?todos, S?o Mateus et al. (2012) apresentou maior infiltra??o de ?gua para o RSU na simula??o com o solo, com rela??o ao m?todo de Fenn et al. (1975), e menor com o RCC, isto ocorre devido ? distin??o dos par?metros de entrada para os materiais, destacando-se a influ?ncia do coeficiente de permeabilidade no balan?o h?drico.

Submitted by SBI Biblioteca Digital (sbi.bibliotecadigital@puc-campinas.edu.br) on 2017-08-07T13:10:24Z No. of bitstreams: 1 R?GIA MARIA PETITTO.pdf: 3577833 bytes, checksum: 125f036f5ae5942ebbd9906d675670d3 (MD5) / Made available in DSpace on 2017-08-07T13:10:24Z (GMT). No. of bitstreams: 1 R?GIA MARIA PETITTO.pdf: 3577833 bytes, checksum: 125f036f5ae5942ebbd9906d675670d3 (MD5) Previous issue date: 2017-06-21 / The objective of this work was to characterize the recycled aggregates generated in the metropolitan region of Campinas and to test its application in the production of mortars for general use. From a qualitative approach, with an exploratory objective, the surveys of the current legislation and legal requirements imposed to solid waste management and the panorama of this management in the metropolitan region of Campinas were carried out. The six recycling plants for the disposal of construction waste (RCC) generated in the implanted municipalities were identified and, based on the data collected, a map with the geographic location of these plants was elaborated. After the sample collection, with a quantitative approach of applied nature and exploratory objective, analyzes of the physical characteristics were made (grain size composition, 75 ?m sieve material, water absorption, clay cladding content and friable materials, Specific mass and organic impurity) and chemical (soluble salts and organic matter content by fire loss) of these materials. All the analyzed aggregates presented satisfactory results in the granulometric composition and water absorption tests. Regarding the content of fine material (less than 75 ?m), clay content and friable materials and organic impurities, few samples could be accepted for use recommended by the Brazilian Association of Technical Standards (ABNT). The analysis of the soluble salts content would also make it impossible to accept the aggregate of some suppliers. With the replacement of natural aggregate by the recycled aggregates, mortars with a 1: 3 dash (cement: aggregate) were prepared, and 20 and 40% of the natural aggregate were replaced. The characteristics of the mortars in the fresh state (water retention, incorporated air content, mass density) and hardened (water absorption by capillarity, capillary coefficient, compressive strength, flexural tensile strength and apparent specific mass in the Hardened state). From the results obtained, the analytical Hierarchy Process (AHP) methodology showed the content of incorporation of the recycled aggregate in the production of general purpose mortars composed of cement and sand. For the application of this method, weights were assigned to punctuated criteria related to the physical and mechanical performance of mortars and environmental criteria related to the exhaustion of natural resources and transport distance. The best result was found in mortar with a 20% substitute content of mixed recycled aggregate by municipal unit from Campinas, but it is not possible to observe a tendency to obtain better results in mortars with lower substitution content, nor exclusively by mortars with mixed recycled aggregates. / O presente trabalho teve por objetivo caracterizar os agregados reciclados gerados na regi?o metropolitana de Campinas e testar sua aplica??o na produ??o de argamassas para uso geral. A partir de uma abordagem qualitativa, com objetivo explorat?rio, foram realizados os levantamentos da legisla??o vigente e exig?ncias legais impostas ? gest?o dos res?duos s?lidos e do panorama desta gest?o na regi?o metropolitana de Campinas. As seis usinas recicladoras para destina??o dos res?duos de constru??o civil (RCC) gerados nos munic?pios implantadas foram identificadas e, a partir dos dados coletados, elaborou-se um mapa com a localiza??o geogr?fica destas usinas. Ap?s a coleta de amostras, com abordagem quantitativa de natureza aplicada e objetivo explorat?rio, foram realizadas an?lises das caracter?sticas f?sicas (composi??o granulom?trica, teor de material passante na peneira de 75 ?m, absor??o de ?gua, teor de torr?es de argila e materiais fri?veis, massa espec?fica e impureza org?nica) e qu?micas (sais sol?veis e teor de mat?ria org?nica por perda ao fogo) destes materiais. Todos os agregados analisados apresentaram resultados satisfat?rios nos ensaios de composi??o granulom?trica e absor??o de ?gua. J? quanto ao teor de material fino (menor que 75 ?m), teor de torr?es de argila e materiais fri?veis e impurezas org?nicas, foram poucas as amostras que poderiam ser aceitas para o emprego recomendado pela Associa??o Brasileira de Normas T?cnicas (ABNT). A an?lise do teor de sais sol?veis tamb?m inviabilizaria a aceita??o do agregado de alguns fornecedores. Com a substitui??o de agregado natural pelos agregados reciclados foram preparadas argamassas com tra?o de 1:3 (cimento:agregado), e substitui??o de 20 e 40% do agregado natural. Foram determinadas as caracter?sticas das argamassas no estado fresco (reten??o de ?gua, teor de ar incorporado, densidade de massa) e endurecido (absor??o de ?gua por capilaridade, coeficiente de capilaridade, resist?ncia ? compress?o, resist?ncia ? tra??o na flex?o e massa especifica aparente no estado endurecido). A partir dos resultados obtidos verificou-se, por aplica??o do m?todo de avalia??o multicrit?rios, com a metodologia Analytic Hierarchy Process (AHP), o teor de incorpora??o do agregado reciclado na produ??o de argamassas de uso geral compostas por cimento e areia. Para a aplica??o deste m?todo foram atribu?dos pesos a crit?rios pontuados ligados ao desempenho f?sico e mec?nico das argamassas e crit?rios ambientais ligados ao esgotamento dos recursos naturais e dist?ncia de transporte. O melhor resultado foi encontrado na argamassa com teor de substitui??o de 20% de agregado reciclado misto da unidade municipal de Campinas, mas n?o ? poss?vel observar tend?ncia de obter melhores resultados em argamassas com menor teor de substitui??o, nem t?o pouco exclusivamente por argamassas com agregados reciclados mistos.