Permeable paving: Specifications

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Specifications for pervious concrete, porous asphaltA mixture of mineral aggregates bound with bituminous materials, used in the construction and maintenance of paved surfaces., and permeable pavers
Material Specification Quantity
Pervious concrete
  • 28 day compressive strength = 5.5 to 20 MPa
  • Void ratio = 14% - 31%
  • Permeability = 900 - 21,500 mm/hr
Thickness will range from 100 mm - 150 mm depending on the expected loads
Porous asphaltA mixture of mineral aggregates bound with bituminous materials, used in the construction and maintenance of paved surfaces.
  • open-graded asphaltA mixture of mineral aggregates bound with bituminous materials, used in the construction and maintenance of paved surfaces. mix with a minimum of 16 % air voids
  • Polymer can be added to provide additional strength to heavy loads
Thickness will range from 50 mm - 100 mm depending on the expected loads
Permeable pavers
  • ASTM No. 8(5 mm dia) crushed aggregateA broad category of particulate material used in construction, including sand, gravel, crushed stone, slag, recycled concrete and geosynthetic aggregates, and available in various particulate size gradations. is recommended for fill material in the paver openings.
  • Pavers shall meet the minimum material and standard specification for precast concrete pavers.
  • Pigment in concrete pavers shall conform to ASTM C 979 ACI Report No. 212.3R provides guidance on the use of pigments.
  • Maximum allowable breakage of product is 5%
  • For vehicle applications the minimum paver thickness is 80 mm
  • For pedestrian applications is 60 mm and joint widths should be no greater than 15 mm.