INFLUÊNCIA DO EMPACOTAMENTO GRANULOMÉTRICO DO AGREGADO GRAÚDO NAS PROPRIEDADES DO CONCRETO PERMEÁVEL
DOI:
https://doi.org/10.46421/entac.v18i.1029Keywords:
Aggregates, Performance, Pervious concrete, Urban drainageAbstract
The aim of this work is to evaluate the influence of the granulometric packing of the coarse aggregate on the properties of pervious concrete. For this aim, the cases with the highest unit weight were selected and four mixtures were produced, with and without sand, by the dosage method proposed by Castro (2009). The mixtures were characterized in the fresh state by observations of workability, covering, exudation, wall effect and, in the hardened state, as to tensile strength in bending, apparent density, air content, permeability coefficient and effective porosity. The results indicated that the unit mass generated by the packing did not present any relation with the studied bending strengths, because there were no significant differences between the samples, the increase in unit mass promoted mixtures of higher air content and apparent density, however, the values of permeability and porosity decreased. Finally, despite the influence of the packing of aggregates on the properties of the concrete studied, the results allow its use for permeable paving of light traffic, according to the recommendations of NBR 16416 (ABNT, 2015).
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