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Authors
Abstract(s)
As estradas de baixo volume de tráfego (EBVT) apresentam grande importância para mobilidade e acessibilidade a regiões do território com pouca densidade demográfica, com segurança, conforto e de forma econômica. No entanto, grande parte desses trechos são estradas não pavimentadas, que requerem uma abordagem tecnicamente aprofundada, para garantir padrões de qualidade aceitáveis. Assim, este trabalho visa caracterizar uma EBVT de uma forma simples e de baixo custo. Para tal, a estrada é avaliada a partir de suas características funcionais e estruturais. Para a avaliação funcional é aplicado o método proposto por Cabette (2018) para estradas não pavimentadas. Já para estudo estrutural do pavimento é utilizado do ensaio com o Light Falling Weight Deflectometer (LFWD), por ser um equipamento com resultados instantâneos, portátil e mais leve que os demais de carga dinâmica e estática, podendo ser facilmente utilizado em zonas de difícil acesso.
Nesta comunicação apresentam-se alguns resultados do estudo realizado. Sobre a avaliação funcional, a estrada se enquadra no conceito péssimo, de acordo com a norma DNIT 006/2003. Porém o método adotado traz algumas ressalvas, primeiramente a análise do defeito é subjetiva, ou seja, depende do avaliador. A respeito do ensaio estrutural, através da resposta do pavimento é possível separar a estrada em seis seções homogêneas. Com os ensaios de caracterização geotécnica, como ensaio de granulometria, proctor e CBR, conclui-se que o solo é bem graduado e tem alta resistência. Com isso se propõem que seja realizado a melhor compactação de alguns pontos, juntamente com a colocação de uma camada de desgaste de cascalho para melhorar as características dessa EBVT.
Low volume roads (LVR) are of great importance for mobility and accessibility to regions of the territory with low population density, safety, comfort, and cost-effectiveness. However, most of these stretches are unpaved roads, which require a technically thorough approach to ensure acceptable quality standards. Thus, this work aims to characterize an LVR in a simple and low-cost way. For this, the road is evaluated from its functional and structural characteristics. For the functional evaluation, the method proposed by Cabette (2018) for unpaved roads is applied. For structural study of the pavement is used the test with the Light Falling Weight Deflectometer (LFWD), because it is an equipment with instant results, portable and lighter than the others of dynamic and static load and can be easily used in hard to reach areas. This paper presents some results of the study. Regarding the functional evaluation, the road fits the bad concept, according to DNIT 006/2003. However, the method adopted brings some caveats, firstly the defect analysis is subjective, that is, it depends on the evaluator. Regarding the structural test, through the pavement response, it is possible to separate the road into six homogeneous sections. With the geotechnical characterization tests, such as granulometry, proctor and CBR tests, it can be concluded that the soil is well-graded and has high resistance. Thus, it is proposed that the best compression of some points be performed, along with the placement of a gravel wear layer to improve the characteristics of this LVR.
Low volume roads (LVR) are of great importance for mobility and accessibility to regions of the territory with low population density, safety, comfort, and cost-effectiveness. However, most of these stretches are unpaved roads, which require a technically thorough approach to ensure acceptable quality standards. Thus, this work aims to characterize an LVR in a simple and low-cost way. For this, the road is evaluated from its functional and structural characteristics. For the functional evaluation, the method proposed by Cabette (2018) for unpaved roads is applied. For structural study of the pavement is used the test with the Light Falling Weight Deflectometer (LFWD), because it is an equipment with instant results, portable and lighter than the others of dynamic and static load and can be easily used in hard to reach areas. This paper presents some results of the study. Regarding the functional evaluation, the road fits the bad concept, according to DNIT 006/2003. However, the method adopted brings some caveats, firstly the defect analysis is subjective, that is, it depends on the evaluator. Regarding the structural test, through the pavement response, it is possible to separate the road into six homogeneous sections. With the geotechnical characterization tests, such as granulometry, proctor and CBR tests, it can be concluded that the soil is well-graded and has high resistance. Thus, it is proposed that the best compression of some points be performed, along with the placement of a gravel wear layer to improve the characteristics of this LVR.
Description
Mestrado de dupla diplomação com a UTFPR - Universidade Tecnológica Federal do Paraná
Keywords
EBVT LFWD Estradas não-pavimentadas