Avaliação estrutural de um pavimento flexível de base constituída de solo laterítico, através dos ensaios deflectométricos e pressiométricos.

Abstract

This work describes the structural evaluation of a flexible pavement, 7 Km long linking the districts of Sapé, Marí and Guarabira (PB- 055) Paraiba State, Northeast Brazil. The structural performance of its layers including the lateritic basement was investigated and data were obtained following the methology described below: a) Test Deflectometer with the B e n k e 1 m a n Bean following a. Nondestructive methodology for the evaluation of flexible pavements through the interpretation of the "Basin Deflection" developed by J.M. Fabricio et al (1988); b) Pressuremeter test of both the sub-grade and the sub-base by using the pressuremeter of pavements developed by Briaud and Shields (1979). The results analysed helped as indicators the structural conditions of the layers and also were correleted and adjusted mathematically for the derivation of equations. the structural deflectometric parameters determined for the lateritic basement and for the methodology used and confirmed it's good performance. Analysis of the significant equations developed in this study renders support for the good quality of the tests performance during the investigations recommending them very good for that evaluation of flexible pavements.