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RESUMO : Uma das patologias que pode ocorrer apos a aplicacao do Microrrevestimento Asfaltico a Frio (MRAF) e o desplacamento nas trilhas de roda. Nesse contexto, o presente trabalho teve por objetivo realizar um diagnostico, por meio de observacoes in loco e registro fotografico do pavimento, a fim de apontar as provaveis causas dos desplacamentos de MRAF nas trilhas de roda que ocorreram em um trecho de aproximadamente 24 km em uma rodovia federal de ligacao no Rio Grande do Sul. Em um segundo momento, o trabalho buscou avaliar a eficacia de duas tecnicas empregadas para correcao dos desplacamentos na rodovia em questao: fresagem padrao na espessura da camada de MRAF seguida por aplicacao de CBUQ nas trilhas de roda e fresagem padrao na espessura da camada de MRAF seguida por aplicacao de uma nova camada de MRAF nas trilhas de roda. As duas solucoes de correcao de desplacamentos de MRAF nas trilhas de roda, adotadas no presente trabalho, foram satisfatorias para as condicoes em que foi realizado o estudo. A principal contribuicao desta pesquisa para a area de transportes e que ela e um case de obra de um tema com pouca documentacao tecnico-cientifica e com alto impacto na pratica da engenharia. ABSTRACT : One of the pathologies that can occur after the application of microsurfacing is the debonding distress in the wheel tracks. In this context, the present research had the objective of making a diagnosis, through in situ observations and photographic record of the pavement, in order to point out the probable causes of microsurfacing debonding distress in the wheel tracks that occurred in a stretch of approximately 24 km in a federal highway linking in Rio Grande do Sul. In a second moment, the research tried to evaluate the effectiveness of two techniques used for correction of the debonding distress in the highway in question: standard milling in the thickness of the microsurfacing layer followed by application of CBUQ in the tracks of milling wheel and standard milling in the thickness of the microsurfacing layer followed by application of a new layer of microsurfacing in the wheel tracks. The two solutions of correction of debonding distress of microsurfacing in the tracks of wheel, adopted in the present research, were satisfactory for the conditions in which the study was realized. The main contribution of this research to the area of transport is that it is a case study, a topic with little technical-scientific documentation and with a high impact in engineering practice.

reec - revista eletrônica de engenharia civil

Estudo do desplacamento de MRAF em rodovia do rio grande do sul: gênese e correções [Study of microsurfacing debonding distress in Rio Grande do Sul highway: genesis and corrections]