Uso de Materiais Alternativos para Melhoria de Solo na Pavimentação de Vias

Silveira, Leonardo Ramos da; Borges, Rafael De Aassis

doi:10.18607/es201653418

Cited by 2 publications

(2 citation statements)

References 4 publications

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“…The importance of the use of alternative materials in the construction industry is due to the concern for the environment, due to the incessant exploitation of natural resources, since they can reach scarcity [1], and also due to the final destination of much of the waste that is produced daily in different service fronts [2]. The transportation infrastructure industry is one of the producers of waste, because of the large number of interventions that are realities in existing structures.…”

Section: Introductionmentioning

confidence: 99%

Hot recycled asphalt mixtures with the incorporation of milled material: analysis of the mechanical performance and economic presumption in the applicability of the technique

Oliveira

Farias

2022

Matéria (Rio J.)

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The paving technique ensures the guarantee of functional traffic conditions, optimizing the performance of the structure in providing travel with comfort and safety. Considering that due to time and the action of traffic, when the pavement reaches the end of its useful life, interventions are necessary, aiming at a gain in serviceability, comprised of the thinning of the coating, generating waste, for later execution of a new layer, which can be recycled. This recurrent technique for road pavements has been widely applied to the use of RAP (reclaimed asphalt pavement), to compose new layers of pavement, given its mechanical performance, especially in terms of permanent deformation, and given the sustainable and economical premise. The paper sought to evaluate, using a laboratory study, the mechanical performance of hot recycled asphalt mixtures with the incorporation of 25%, 45%, and 100% of RAP, and to perform an economic analysis of the applicability of the technique. The dosage methodology occurred according to the Superpave specification whose results listed a significant gain in stiffness, and good mechanical performance with proportionality in the values obtained according to the incorporation rate of RAP. As for the economic analysis, it was observed that the costs of applicability of the technique are related to the percentage of incorporation in mass and the logistical costs of processing, which may be lower than or higher than that of a conventional mixture. Above all, the results were satisfactory to prove the feasibility of the technique in paving works.

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Section: Introductionmentioning

confidence: 99%

Hot recycled asphalt mixtures with the incorporation of milled material: analysis of the mechanical performance and economic presumption in the applicability of the technique

Oliveira

Farias

2022

Matéria (Rio J.)

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“…Além da capacidade de absorver grande volume de material, pesquisas envolvendo o emprego de materiais alternativos visando à substituição do cascalho laterítico, material tradicionalmente utilizado para tal finalidade, demonstraram melhoras nas condições de capacidade de suporte e de resistência mecânica dos solos locais, refletindo em uma durabilidade maior dos pavimentos flexíveis se comparados com aqueles que foram executados apenas com o emprego do solo local (REZENDE et al, 2013, SILVEIRA;BORGES, 2015, PIRES et al, 2016.…”

Section: Introductionunclassified

Reforço De Solo Utilizado Em Pavimentos Flexíveis Com Resíduo Da Clarificação De Óleo Vegetal

Araújo¹,

Ribeiro²,

Mendonça³

2019

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RESUMOO objetivo desse trabalho foi avaliar o desempenho da resistência mecânica da mistura de argila clarificante descartada e solo, no intuito de proporcionar uma destinação ambientalmente adequada ao resíduo por meio da sua aplicação em camadas de base e sub-base de pavimentos flexíveis. Foram utilizadas misturas compostas por 100% solo, 100% argila clarificante descartada (ACD), 05% de ACD + 95% solo, 10% de ACD + 90% solo, 20% de ACD + 80% solo, 30% de ACD + 70% solo e 40% de ACD + 60% solo, totalizando sete unidades experimentais. Para avaliação do desempenho mecânico, foram realizados os ensaios de compactação Proctor e Índice de Suporte Califórnia (CBR), nas energias intermediária e modificada. As misturas obtiveram comportamento granulométrico similar ao solo local, observando-se uma alteração da fração fina devido o incremento do resíduo às mesmas. Os resultados de resistência mecânica indicaram um melhor desempenho das misturas com 10% de ACD + 90% solo e 20% de ACD + 80% solo, na energia modificada, sendo recomendadas como material para execução de base de pavimentos. Para as demais misturas, recomendase apenas o emprego na execução de sub-bases de pavimentos flexíveis. PALAVRAS-CHAVE: pavimentos flexíveis, resíduos industriais, terras clarificantes ENCICLOPÉDIA BIOSFERA, ABSTRACTThe objective of this work was to evaluate the performance of the mechanical resistance of mixtures of discarded clarifying clay and soil, in order to provide an environmentally adequate destination for the residue through its application in base layers and sub-base of flexible pavements. Composed blends were used of 100% solids, 100% discarded clarifying clay (ACD), 05% ACD + 95% solids, 10% ACD + 90% solids, 20% ACD + 80% 70% soil and 40% ACD + 60% soil, totaling seven experimental units. For the evaluation of the mechanical performance, the Proctor coupling and the Califoria Bearing Ratio tests were performed in the intermediate and modified energies. The mixtures obtained similar granulometric behavior to the local soil, observing an alteration of the fine fraction due to the increase of the same residue. The results of mechanical resistance indicated a better performance of the mixtures with 10% of ACD + 90% soil and 20% of ACD + 80% soil, in the modified energy, being recommended as base material for execution flexible pavements. For the other mixtures, it is recommended only the use in the execution of sub-bases of flexible pavements.

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Uso de Materiais Alternativos para Melhoria de Solo na Pavimentação de Vias

Cited by 2 publications

References 4 publications

Hot recycled asphalt mixtures with the incorporation of milled material: analysis of the mechanical performance and economic presumption in the applicability of the technique

Hot recycled asphalt mixtures with the incorporation of milled material: analysis of the mechanical performance and economic presumption in the applicability of the technique

Reforço De Solo Utilizado Em Pavimentos Flexíveis Com Resíduo Da Clarificação De Óleo Vegetal

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