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Previous issue date: 2017-02-07 / Funda??o de Amparo ? Pesquisa do Estado de S?o Paulo - FAPESP / In view of the large volume of waste generated by the construction industry coupled with the growing understanding of environmental preservation by the population, it was necessary to carry out studies with the firm intention of reusing these wastes. This work focuses on the residues generated in the area of road pavement construction, especially those resulting from the maintenance, restoration and improvement of roads paved with asphalt concrete. As the use of this material is not always carried out in a technical and adequate way, even though several studies are directed to the good technique of using recycled asphalt pavement, this work intends to present another technical form for the application of this important residue, to use in the construction of rigid concrete barriers and in gutters, half wire and gutters. These services normally run within the road works, that is, it aims to keep the material generated within the limits of the generating source. In order to achieve this, studies focused on meeting the technical specifications of the National Department of Infrastructure and Transport (DNIT) and the Department of Roads of the State of S?o Paulo (DER-SP), minimizing the output of milling from the generating source, considering that these public agencies are the main sources of this waste and performers of the services for which it is intended. This study compared the physical characteristics of conventional concrete and concrete with embedded asphalt milling, thus evaluating its technical, economic feasibility and environmental. The study was carried out in concrete with a characteristic compressive strength of 25MPa, intended for road safety elements, and at 20MPa for surface drainage elements. It was observed that the increase of recycled asphalt pavement in the concrete mixture directly influences the mechanical resistance, reducing its resistant capacity. When analyzing the substitution content of recycled asphalt pavement in the mix, it was found that percentages higher than 15% substantially affect the concrete's strength properties. The concrete with recycled asphalt pavement presents less rise and absorption of water by capillarity, as well as less absorption in the test of immersion, important qualities for mixtures that will be destined to the manufacture of structures that will be exposed to the elements or the contact with the water. The use of this residue in the concrete generates reduction in the cost of manufacture, besides providing reduction of the emission of greenhouse gases (CO2). In Brazil, it can be estimated that the use of asphalt milling in the concretes studied, can generate the approximate annual reduction of 270 thousand tCO2, besides saving approximately US$ 97 million/year through the sale of CO2 ("green" income) And the reduction of costs with the acquisition of natural raw materials extracted from deposits (sand and crushed stone), as well as to finance with this amount the construction of approximately 23 thousand popular residences of 40m2. / Tendo em vista o grande volume gerado de res?duos pela ind?stria da constru??o aliado ao fato do crescente entendimento pela popula??o da preserva??o ambiental, fez-se necess?ria a realiza??o de estudos com o firme prop?sito de reutiliz?-los. Este trabalho foca no res?duo gerado na ?rea da constru??o de pavimenta??o vi?ria, principalmente naqueles advindos das obras de manuten??o, restaura??o e melhoria do leito vi?rio pavimentado revestido com concreto asf?ltico. Como a utiliza??o deste material ? realizada nem sempre de forma t?cnica e adequada, mesmo tendo diversos estudos direcionados ? boa t?cnica de utiliza??o do fresado asf?ltico, este trabalho tem a pretens?o de apresentar mais uma forma t?cnica para a aplica??o deste importante res?duo, o de utilizar na constru??o de barreiras r?gidas de concreto e em canaletas, meios fio e sarjetas. Servi?os estes normalmente executados dentro das obras vi?rias, ou seja, visa manter o material gerado dentro dos limites da fonte geradora. Para isso, foram realizados estudos focados em atender as especifica??es t?cnicas do Departamento Nacional de Infraestrutura e Transporte (DNIT) e do Departamento de Estradas de Rodagem do Estado de S?o Paulo (DER-SP) em parte das obras de seguran?a vi?ria e drenagem, tendo em vista que estes ?rg?os p?blicos tem o dom?nio das principais fontes geradoras deste res?duo e s?o executores dos servi?os ao qual se destina. Este estudo comparou as caracter?sticas f?sicas do concreto convencional e do concreto com fresado asf?ltico incorporado, avaliando assim a sua viabilidade t?cnica, econ?mica e ambiental. O estudo foi realizado em concreto com resist?ncia caracter?stica ? compress?o de 25MPa, destinado a elementos de seguran?a vi?ria, e com 20MPa, para os elementos de drenagem superficial. Foi constatado que o incremento de fresado asf?ltico na mistura do concreto influencia diretamente nas resist?ncias mec?nicas, reduzindo sua capacidade resistente. Ao analisar o teor de substitui??o de fresado asf?ltico na mistura, foi constatado que percentuais superiores a 15% afetam substancialmente as propriedades mec?nicas do concreto. O concreto com fresado asf?ltico apresenta menor ascens?o e absor??o de ?gua por capilaridade, bem como menor absor??o no ensaio de imers?o, qualidades importantes para misturas que ser?o destinadas ? fabrica??o de estruturas que ficar?o expostas ?s intemp?ries ou ao contato com a ?gua. O uso deste res?duo no concreto gera redu??o no custo de fabrica??o, al?m de proporcionar redu??o da emiss?o de gases do efeito estufa (CO2). No Brasil, pode-se estimar que o uso do fresado asf?ltico nos concretos estudados, pode gerar a redu??o anual aproximada de 270mil tCO2, al?m de possibilitar economia aproximada de US$ 97 milh?es/ano atrav?s da comercializa??o do CO2 (renda ?verde?) e da redu??o de custos com a aquisi??o de mat?rias primas naturais extra?das de jazidas (areia e pedra britada), bem como financiar com este valor a constru??o de aproximadamente 23mil resid?ncias populares de 40m?.
| Identifer | oai:union.ndltd.org:IBICT/oai:tede.bibliotecadigital.puc-campinas.edu.br:tede/925 |
| Date | 07 February 2017 |
| Creators | Ruiz, Adilson Nunes |
| Contributors | Jacintho, Ana Elisabete Paganelli G. de A., Pimentel, Lia Lorena, Pezzuto, Claudia Cotrim, Balbo, Jos? Tadeu |
| Publisher | Pontif?cia Universidade Cat?lica de Campinas, Programa de P?s-Gradua??o em Sistemas de Infraestrutura Urbana, PUC-Campinas, Brasil, CEATEC ? Centro de Ci?ncias Exatas, Ambientais e de Tecnologias |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Format | application/pdf |
| Source | reponame:Biblioteca Digital de Teses e Dissertações da PUC_CAMPINAS, instname:Pontifícia Universidade Católica de Campinas, instacron:PUC_CAMP |
| Rights | info:eu-repo/semantics/openAccess |
| Relation | -7799102402292943191, 500, 500, 600, 7753375307196687699, 3003932023866377114 |
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