Análise comparativa entre levantamentos visuais contínuos pelos métodos manual e semiautomático em pavimento flexível

Abstract

A Pavement Management System (PMS) is a set of tools developed to assist in the decisionmaking process in quality management, interventions and maintenance of a pavement. Within an PMS, there are assessments of pavement conditions, which are the activities that feed the system with data referring to history of implementation, maintenance and restoration, orography of the region, regional characteristics and structural, functional and operational conditions of a highway. Assessments can be performed manually and automated (semiautomatic and automatic), with differences related to the hiring of labor, execution and data processing time, quantity of equipment and cost. Therefore, the present work proposes to verify the feasibility of evaluating the condition of flexible pavement surfaces in a semi-automatic way with a Continuous Visual Survey, comparing it with a manual evaluation. The surveys were carried out on BR-424/AL between the kilometers 92 and 108, totaling 16 km of evaluated pavement. The manual survey took place from the direct visualization of the defects and the condition of the pavement in the field, while the semi-automatic one took place through the video recording of the runway coating. The results showed strong similarities between the conceptualizations of the highway segments in both surveys. Evidencing that the semiautomatic survey is a viable and reliable alternative method to be applied, and can present great reductions in the cost associated with the evaluations.