Pavimento de concreto drenante: uma análise de execução

Abstract

With the exacerbated urban growth of the last decades, the increase of impervious areas is a notorious consequence. This, along with the lack of adequate urban planning, creates major disadvantages of rainwater drainage that are repeated in every rainy season. However, it is possible to make use of devices that allow the increase of the infiltration capacity in built-up areas and delay the runoff time. A device with this function is the pervious concrete, a concrete without the addition of fines that, for this reason, becomes porous, allowing the passage of water through its structure. Pervious concrete has the purpose of reducing the volume of surface runoff through the total or partial absorption of the water that flows on it. The water captured by the drainage pavement can simply be absorbed by the soil or be first conveyed to a reservoir and from there to an outlet or collection site. This work analyzes the procedures and specific construction techniques for the execution of pervious concrete pavement. Besides, it presents and analyzes studies carried out by different authors who also studied constructive techniques of pervious pavements and their performances. Throughout the work, the necessary steps for the correct execution of pervious concrete pavement are explained, since the project activities, through the normative tests, to the executive stage with all the specific care for this type of structure. At the end, a step-by-step flowchart for the correct execution of a pervious concrete pavement is presented.