MICRORREVESTIMENTO ASFÁLTICO A FRIO (MRAF) COMO OPÇÃO NO REPARO DA CAPA ASFÁLTICA EM PATOLOGIAS NA RODOVIA BR 381 – TRECHO DE BELO HORIZONTE/MG km 477 A SÃO PAULO/SP km 90

Abstract

This work demonstrates the application of cold asphalt Micro-Surfacing (MS) as an option in the repair of the asphalt cover in pathologies on the BR 381 highway. This approach is necessary due to the intense wear and tear caused on the highway due to the large flow of vehicles on highway BR-381, the intensity of precipitation, aligned with winds and the sun contribute to the wear of materials, making their periodic maintenance of paramount importance. The objective of this work will be to prove in a technical and mathematical way that when applied to the MS adequately in the repairs of highway BR-381, its execution reduces its time, costs and improves traffic conditions for the user. This task will be achieved through visits along the track and qualitatively identify the pathologies on the pavement, there are numerous causes, sizes and models of defects in the pavement and this comparison describes the Methodology of The MS as a cold asphalt mixture, composed of aggregates being a great aid in the recomposition in the layer of the Asphalt Cover of highway BR 381. There are numerous defects in the floors, called The Rift, subdivided into Cracks and Cracks. And in the visit on site, carried out by the Author, in the direction of BH and in the direction of SP of the track range of BR-381, qualitatively, with the field team, the pathologies on the pavement were identified The study demonstrated and proved that the MS decreases costs, due to the use of a mini plant in the application, avoiding connecting the Asphalt Plant in the company's yard. With less time is released traffic on the track faster.