Evaluation of the PCC slabs of the bus corridors of Anapolis according to its extension

Abstract

The Brazilian law N° 12.587/12 on urban mobility, currently in effect, aims to ensure the improvement of accessibility, and the trafficability of people and cargo in cities, as well as integrate transport modes, and study mechanisms for infrastructure management. Cities with a population of more than 20,000 had to create their urban mobility plans, according to the requirements of the Ministry of the City. The objective of the plan is to conceive projects that aim to mitigate operational and functional problems in the transportation network within the municipalities. One of these cities that is creating a mobility plan is Anápolis-GO, where its plan includes the implementation of bus lanes on the main avenues of the municipality. In these corridors, there was the substitution of the flexible pavement by slabs of PCC (Portland cement concrete), at the boarding and alighting points, due to the sudden braking events and occasional acceleration. Given this scenario, the study aimed to analyze the stopping distance at these locations, as a function of road speed and braking rate, to assess whether the length of these slabs would be sufficient to what was proposed. In addition, it was sought to monitor the pavement against the performance of the PCC slabs, given the incident loads of braking and acceleration, as well as the performance of the flexible pavement, predicting the possible consequences and/or pathologies that may occur due to the operation, since the existing traffic in the corridors should be compatible with that of a high-speed road.

Hot recycled asphalt mixtures with the incorporation of milled material: analysis of the mechanical performance and economic presumption in the applicability of the technique

“…The functionality of the road transport infrastructure is mainly due to the quality of the pavement network. When the pavement is in unfavorable conditions that put operations at risk, it becomes necessary to adopt maintenance and rehabilitation (M&R) actions to restore functionality and ensure the performance and serviceability of the structure during its service life [12]. M&R actions, understood as pavement interventions and also as restoration techniques, are part of the pavement management system, which starts at the production and technological control of materials stage and ends at the final destination of the waste of a condemned pavement that has reached the end of its service life.…”

“…M&R actions, understood as pavement interventions and also as restoration techniques, are part of the pavement management system, which starts at the production and technological control of materials stage and ends at the final destination of the waste of a condemned pavement that has reached the end of its service life. These actions include every intervention performed on the structure, whether it is for the recomposition of the traffic lane and/or for signaling, and adaptations of the domain lane, so that both aim at returning the pavement to its functionality, to operate in comfort and safety [2,4,12].…”