Avaliação das características dos materiais utilizados na composição das camadas de um pavimento drenante

Abstract

Despite the problems encountered in urban centers, for the most part, is not perceived as the work of technologies that mitigate physical effects and, therefore, they improve the generation of flood volumes through the high hydraulic discharge of the rains. In this context, there is a high suitability in the overload of the drainage systems and increasing of influential areas of the rivers, once it may be due to the high rates of impermeabilization. The survey problem arises as a large - scale problem of urban problems, and this work searched for the permeable paving on concrete blocks for parking at the Federal University of Tocantins - UFT in Palmas - TO, analysing the materials, as well as your performance in relation to the capacity to infiltrate and present the availability and working maintenance and the correct usage and ability to adapt to a new structure. The material characterization was performed based on the standards in force and governed by the Associação Brasileira de Normas Técnicas for Performance and all parameters stabilished based on NBR 16.416. The studied pavement has a structure arranged in blocks in fishbone set up and, currently, shows great problems of flooding during the period of minor raining volume, since it is one of the most important means of significant flow. Although the slope built, the water flow limit was incurred to acumulate at some floor points, due to the failure in the surface and a process of sealing the joints. Therefore, to a negative situation, the work had a significant importance on reaserching all troubles as the search for resources and the characterization of materials that were subject to regulations and, also, the development of new materials that fulfill the function of pavement. Finally, the construction of a representative model of dimensions is 1.0 m x 1.0 m considering the thicknesses of the layers in the rest of the pavement, with only a replacement being made for the new materials, which are guaranteed to raise the coefficient of permeability, to a value of 10-3 m⁄s, classified as ideal for a pavement scenario, while the currentstructure allows coefficients between 10-5 a 10-7 m⁄s.The difference between the materials is very notorious, while in the pavement built took only 30 seconds and in the old structure was timed in 2 minutes to complete the infiltration process. That being said, it isinferred that the use of the drainage system is given as efficient once provided the conditions are fulfilled all criterias and applied the necessary maintenance.