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Abstract(s)
Esta dissertação foi baseada no estudo de Pavimentos Perpétuos que atualmente é um termo usado para descrever um projeto estrutural de longa duração, construção e conceito de manutenção para pavimentos flexíveis. Se bem mantido e reabilitado, um pavimento perpétuo pode ser projetado e construído para durar mais de 40 anos sem requerer grande reabilitação estrutural ou reconstrução e precisando apenas de renovação periódica da superfície em resposta as patologias confinadas ao topo do pavimento. A dissertação se fundamenta em um amplo estudo do estado da arte de pavimentos perpétuos e conta com a apresentação de um dimensionamento de um pavimento perpétuo pelo método Shell, com o auxílio do software Alize LCPC, como ferramenta de apoio para a definição da melhor estrutura para o pavimento perpétuo. O dimensionamento foi realizado através de um projeto de duplicação de uma rodovia localizada na região central do estado de São Paulo - Brasil, executado pela VETEC Engenharia para o DER/SP – Departamento de Estradas e Rodagem de São PAulo. O projeto de duplicação desta rodovia foi realizado através do método preconizado pelo DER/SP, com o auxílio do software ELSYM 5 para definição da estrutura de pavimento semi-rígido, tradicionalmente executado no Brasil. Com a definição de ambas as estruturas finais é realizado uma comparação entre as técnicas, avaliando os custos estimados para concepção e manutenção de ambos os pavimentos, para um período de 13 anos, período mínimo definido pela APA – Asphalt Pavement Aliance, que uma estrutra de pavimento flexível deve durar antes de necessitar de uma manutenção para que a estrutura seja reconhecida como perpétua. O objetivo da avaliação dos resultados finais desta comparação é verificar se um pavimento perpétuo que possui vantagens como: menor frequência de manutenção, diminuição de atrasos de usuários, economia de materiais e mão de obra para manutenção e vida útil superior, se justifica financeiramente, uma vez que seu custo de concepção é notavelmente superior a um pavimento convencional, porém existe uma economia considerável no que diz respeito a manutenção de ambos os pavimentos, é importante destacar que está análise é contextualizada no cenário brasileiro, portanto, alguns materiais não são utilizados em escala comercial, o que encarece sua produção.
This dissertation was based on the study of Perpetual Pavements that is currently a term used to describe a long term structural design, construction and maintenance concept for flexible pavements. If well maintained and rehabilitated, a perpetual pavement can be designed and built to last for more than 30 years without requiring major structural rehabilitation or reconstruction and requiring only periodic surface renovation in response to pathologies confined to the top of the pavement. The research is based on an extensive study of the state of the art of perpetual pavements and has the presentation of a scaffolding of a perpetual pavement by the Shell method, with the help of Alize LCPC software, as a support tool for the definition of the best structure for the perpetual pavement. The design was done through a duplication project of a highway located in the central region of the state of São Paulo - Brazil, executed by VETEC Engenharia for the DER / SP - São Paulo Roads and Highway Department. The duplication project for this highway is performed using the method recommended by DER / SP, with the help of ELSYM 5 software to define the semi-rigid pavement structure traditionally executed in Brazil. With the definition of both final structures, a comparison of the techniques is performed, evaluating the costs incurred for the design and maintenance of both pavements, for a period of 13 years, a minimum period defined by the APA - Asphalt Pavement Aliance, that a pavement must maintenance so that the structure is recognized as perpetual. The objective of the evaluation of the final results of this comparison is to verify that a perpetual pavement that has advantages such as: lower frequency of maintenance, reduction of user delays, saving of materials and labor for maintenance and superior useful life, is justified financially, a Since its design cost is remarkably higher than a conventional pavement, however, we have considerable savings in terms of maintaining both pavements, it is important to highlight that this analysis is contextualized in the Brazilian scenario, therefore, some materials are not used in commercial scale, which increases its production.
This dissertation was based on the study of Perpetual Pavements that is currently a term used to describe a long term structural design, construction and maintenance concept for flexible pavements. If well maintained and rehabilitated, a perpetual pavement can be designed and built to last for more than 30 years without requiring major structural rehabilitation or reconstruction and requiring only periodic surface renovation in response to pathologies confined to the top of the pavement. The research is based on an extensive study of the state of the art of perpetual pavements and has the presentation of a scaffolding of a perpetual pavement by the Shell method, with the help of Alize LCPC software, as a support tool for the definition of the best structure for the perpetual pavement. The design was done through a duplication project of a highway located in the central region of the state of São Paulo - Brazil, executed by VETEC Engenharia for the DER / SP - São Paulo Roads and Highway Department. The duplication project for this highway is performed using the method recommended by DER / SP, with the help of ELSYM 5 software to define the semi-rigid pavement structure traditionally executed in Brazil. With the definition of both final structures, a comparison of the techniques is performed, evaluating the costs incurred for the design and maintenance of both pavements, for a period of 13 years, a minimum period defined by the APA - Asphalt Pavement Aliance, that a pavement must maintenance so that the structure is recognized as perpetual. The objective of the evaluation of the final results of this comparison is to verify that a perpetual pavement that has advantages such as: lower frequency of maintenance, reduction of user delays, saving of materials and labor for maintenance and superior useful life, is justified financially, a Since its design cost is remarkably higher than a conventional pavement, however, we have considerable savings in terms of maintaining both pavements, it is important to highlight that this analysis is contextualized in the Brazilian scenario, therefore, some materials are not used in commercial scale, which increases its production.
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Keywords
Pavimento Perpétuo Estrutura Pavimento Flexível Betão betuminoso Perpetual Pavement Structure Flexible Pavement Asphalt Concrete