Desenvolvimento de um modelo correlacional entre o valor eficaz da aceleração vertical e valor de serventia atual para desenvolvimento de mapa indicativo da qualidade de pavimentos do município de Alegrete-RS

Abstract

With the increasing expansion of land vehicle fleet and urban roads for transport circulation, it’s necessary to implement tools or technologies that would help in the management of pavements. This study aims to evaluate the applicability of the smartphone to estimate the longitudinal irregularity of flexible urban pavements by the root mean square of vertical acceleration (RMSVA), and correlate with the method of the Value of Current Utility (VSA). The work was performed in the city of Alegrete - Rio Grande do Sul, where a total of five sections of flexible pavements were evaluated by two methods, the first using a smartphone and the SensorLab application, where each section was traveled 10 times to obtain the average of the pavement RMSVA values, and the other was the application of VSA, the evaluation was performed in urban pavements, with asphalt coating whose sections have different ages and levels of conservation. After obtaining the collected data, it was then possible to determine the order of priority for maintenance and rehabilitation of the sections. Using the VSA method, it was possible to determine that, of the 9510 meters of flexible pavements evaluated, 4,42% of the total were considered in excellent condition, 44,06% in good condition, 29,65% in regular condition, 12,93% in bad condition and 8,94% in very poor condition. For the same sections evaluated by the VSA and through the correlation of methods, the RMSVA determined that 13,04% of the total were considered in excellent condition, 41,75% in good condition, 23,35% in fair condition, 18,50 % in poor condition and 3,36% in poor surface condition. Therefore, it’s understood that with the generation of the maps, the objective of the work was fulfilled and the results were successfully concluded, however, it is still necessary to analyze more data from the existing road network, expanding the studies on the management of urban pavements in the city. Keywords: longitudinal irregularity, Current Service Value, management of pavements, Smartphone.