Contribuição ao projeto de pavimentos urbanos de baixo volume de tráfego, através da utilização do cone de penetração dinâmica.

Abstract

For design of pavement is fundamental importance the knowledge of the physical features and soil mechanics of subgrade through tests in laboratory or field tests. The field geotechnical tests, like in situ CBR and plate experiment, whose results are used for the pavements design, represent more accurately the soil conditions, but involve heavy equipments, difficult to transport, install maintenance, making them in general, expensive and laborious to work. The Static Cone Penetrometer (SCP) and the Dynamic Cone Penetrometer (DCP) are simple equipments, portable, low cost and easy implementation that became an alternative to the pavement design. With such equipment it is possible to determine the penetration resistance profile of compacted soil layers or in its natural conditions from correlations between this tests and in situ CBR for example. In this study we tried to determine mathematical models that relate the results obtained with the SCP e DCP with those obtained with the in situ CBR test. The results indicate that the SCP and DCP may be used, with the aid of these models, in the urban roads design with low traffic volume and tailor a design method of pavement urban traffic using the results of penetration obtained with the test of CPD. The results indicate that the tests of DCP presents a significant correlation with the in situ CBR test for soil type A-2-4 can be used in the design of pavements for urban roads of low traffic volume.