Estudo da viabilidade técnica do Cone de Penetração Dinâmica (CPD), do Cone de Penetração Estática (CPE) e do penetrômeto Panda no dimensionamento de pavimentos urbanos.

Abstract

The necessity for realistic and economical methods of pavement dimensioning has been evolving in recent years with the appearance of new techniques and equipment resulting from several researches. Current geotechnical test performed in field, CBR "in situ" and Plaque Tests, whose results are used for dimensioning pavements, represent more faithfully soil conditions, however, they involve heavy equipment, which are difficult to transport and install and makes them, in general, expensive and laborious. The Cone of Dynamic Penetration (CPD), the Cone of Statistic Penetration (CPE) and PANDA Penetrometer are simple tools, portables and inexpensive, and is non-destructive tests. With this kind of equipments is possible to determine the penetration resistance profile of layers of compacted soil or soil in its natural state, contrai the performance of several jobs and evaluate the structures of existing pavements. In this work aimed to determine a definite mathematical model through information contained in technical literature, by experimental procedures performed, and by regression analysis. The model compares the results obtained with the CPD with the values of CBR. From the regression analysis, a mathematical model was established which relates the values of the penetration index obtained with the CPD test, with the penetration resistance values obtained in the CPE and PANDA test. Preliminar/ studies subsidize the insertion of an empiric and preliminar/ procedure for the dimensioning of pavements of urban streets with a low volume of traffic. This procedure is based on the results of the CPD, CPE and PANDA tests.