Experimental appraisal for characterizing laboratorial and field performance parameters of pervious concrete pavement

Rafael Batezini, José Tadeu Balbo, Liv Haselbach, Filipe de Oliveira Curvo, Guilherme Nunes Kalleder, Beatriz Sayuri Sato, Domênico Zema

Resumo


Laboratorial tests with pervious concrete comprised porosity and hydraulic conductivity as well as mechanical parameters as compressive, indirect tensile and bending strengths besides assessing its static and dynamic elasticity moduli. Later, a pervious sidewalk area of 1.0 x 8.65 square meters was built in order to determine the variation of the infiltration rate along time; over such experimental sidewalk, impact deflection tests performed allowed to assess backcalculated moduli of the pervious concrete layer, resulting 33% to 13% lower than conventional concretes. A mechanistic analysis allowed to estimate the required thickness of concrete for heavy- and light-traffic areas. Tests disclosed no significant difference among the different concrete mixes, with 25% porosity and 0,1 cm/s permeability. Initial sidewalk infiltration rate of 0.5 cm/s dropped 50% four months after construction. It was verified that pervious concrete thicknesses for trucks and buses use are far higher than conventional concrete pavements.


Palavras-chave


concreto permeável; calçadas; ciclovias; parâmetros hidráulicos; colmatação

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Direitos autorais 2021 Ambiente Construído

Licença Creative Commons
Este obra está licenciado com uma Licença Creative Commons Atribuição 4.0 Internacional.

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