Abstract
Abstract Loratorial 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 back calculated 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.
Highlights
The following subsections summarize the description of materials, mix proportions, laboratory tests and numerical approach used during the researc
Such a requirement can¶t be seen as costly nor environmentally appropriate, since unitary costs for pervious concrete are similar or higher than conventional concretes. In view of such achievements from this study it is hard to, currently, expand the use of pervious pavements for any kind of road, keeping it fully applicable to cars parking lots at shopping c enters and commercial areas as well for sidewalks for general use and bikeways within the urban environment. It was presented an investigation on the mechanical and hydraulic properties of three different mixes of pervious concrete cast in laboratory supplemented by a field application study on a sidewalk
The results were used to perform a mechanistic analysis to figure out the suitability of pervious concrete to be used as the surface layer of permeable pavements under loads other than automobiles
Summary
The following subsections summarize the description of materials, mix proportions, laboratory tests and numerical approach used during the researc.
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