Materiales de Construcción, Vol 57, No 287 (2007)

Porous concrete mixtures for pervious urban pavements

H. de Solminihac
Pontificia Universidad Católica de Chile (Santiago), Chile

C. Videla
Pontificia Universidad Católica de Chile (Santiago), Chile

B. Fernández
Pontificia Universidad Católica de Chile (Santiago), Chile

J. Castro
Pontificia Universidad Católica de Chile (Santiago), Chile


The present study aimed to analyze the hydraulic and mechanical behaviour of a series of roller-compacted, laboratory porous concrete mixtures. The mix design variables examined were the actual void ratio in the hardened concrete and the water/cement ratio. From these results the better dosages from the mechanical and hydraulical behaviour point of view were determined.
One of the designs developed was found to exhibit excellent hydraulic capacity and 20% greater strength than the mixtures recommended in the literature. Moreover, concrete with an actual void ratio of only 14% was observed to meet permeability requirements. Maximum flexural strength of concretes with different w/c ratios was achieved with a cement paste content of 250 l/m3. Relationships were found between the void ratio and both 28-day concrete permeability and flexural strength. Finally, the doses exhibiting the best mechanical and hydraulic performance were identified.


porous concrete; pervious concrete; drain concrete; permeability; infiltration

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Copyright (c) 2007 Consejo Superior de Investigaciones Científicas (CSIC)

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