Análise da influência da relação água/aglomerante nas propriedades de concretos permeáveis

Abstract

Due to its high void content, it has a high water percolation capacity, making it possible to reduce surface runoff. However, this compromises its mechanical resistance, which ends up restricting its use to medium traffic areas. In the present work, the properties of permeable concrete produced with different water/cement ratios (0.25; 0.30; 0.35 and 0.40) were evaluated. The characterization of the materials and the properties of the permeable concretes at 28 days were carried out. The tests carried out were resistance to axial compression, permeability, infiltration rate and Los Angeles abrasion. The final results indicated that the highest water/cement ratios used generate a higher compressive strength than the others, but with lower permeability. The resistances found reached an average of 5.15 MPa and the permeability was classified as high, when reaching values greater than 10-3 m/s.