Análise da vida de projeto de estradas não pavimentadas

Abstract

This work aims to stimulate a greater attention to the unpaved highways that exist over great distances and are mainly used to drain the primary production of our country, which today is very relevant to the national economy. Excessive load on vehicles along with rainwater greatly deplete the life of unpaved roads, the lack of maintenance provided by competent bodies, which is often not well executed, further aggravate road problems. In order to have a longer design life, these parameters must be very well defined, an appropriate cross-section with adequate drainage and bulging on the order of 4%. For the present analysis, it was considered an unpaved highway stretch in the municipality of Rosário do Sul. The highway has a great importance for the municipality, with this the study was done to classify the soil of the region and characterize its properties. With the direct shear test it was possible to determine the angle of friction and the cohesive intercept, from these values a static load was obtained, which was converted to a dynamic load, resulting in the design life for the soil of the region. From the soil collected considering the values analyzed, an aggravating of the low project life for the soil is the low cohesion, because the soil is sandy has a fairly high angle of friction, with a small increase of the cohesive intercept, through some type of stabilization, without interfering in a negative way in the angle of friction, together with the well-defined parameters, the project life has a considerable increase.