# EXPERIMENTAL AND MICROMECHANICAL APPROACH TO ELASTIC PROPERTIES OF PERVIOUS CONCRETE

## Palavras-chave:

Pervious Concrete, Elastic Properties, Experiments, Micromechanics## Resumo

Pervious concrete refers to a material composed by Portland cement, coarse aggregate, little

or none fine aggregate, water and, at times, additives and additions. The pervious concrete porosity

affects its elastic properties, as pointed by available studies. In the perspective of a wide use, a

comprehensive formulation of the corresponding behavior is necessary. In this context, the present

study describes a micromechanical model for the macroscopic elastic properties of the pervious

concrete. Reasoning on the representative elementary volume (REV) of such a composite, the overall

elastic characteristics are determined from the knowledge of the elastic properties of its constituents

(aggregate + cement paste + pores). Moreover, aiming the comprehension of the elastic and strength

behaviors of pervious concrete produced with local supplies (Porto Alegre, RS), this work evaluates

experimentally the following parameters: elastic modulus and uniaxial compressive strength. The

results show how the elastic properties are related to the porosity of pervious concrete produced with

local materials and confirm the possibility of estimating the elastic properties through the

micromechanical approach.