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Line 8: − + − + − + − + + + − + − + − + + − + − + − + − *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%+ − +
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|'''Pervious concrete'''
|'''Pervious concrete'''
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* 28 day compressive strength = 5.5 to 20 MPa
* NO4-RG-S7 mix with air entrainment proven to have the best freeze-thaw durability after 300 freeze-thaw cycles.
* Void ratio = 14% - 31%
* 28 day compressive strength = 5.5 to 20 MPa.
* Permeability = 900 - 21,500 mm/hr
* Porosity between 14% to 31%.
|Thickness will range from 100 mm - 150 mm depending on the expected loads
* Permeability = 900 to 21,500 mm/hr.
* Proprietary pre-cast slabs meeting required specifications are also available.
|Thickness will range from 100 mm - 150 mm depending on the expected loads.
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|'''Porous asphalt'''
|'''Porous asphalt'''
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* open-graded asphalt mix with a minimum of 16 % air voids
* Open-graded asphalt mix with a minimum porosity of 16%.
* Polymer can be added to provide additional strength to heavy loads
* Polymers can be added to provide additional strength to heavy loads.
|Thickness will range from 50 mm - 100 mm depending on the expected loads
*The University of New Hampshire Stormwater Center has detailed design specifications for porous asphalt.
|Thickness will range from 50 mm - 100 mm depending on the expected loads.
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|'''Permeable pavers'''
|'''Permeable Interlocking Pacements'''
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*ASTM No. 8(5 mm dia) crushed aggregate is recommended for fill material in the paver openings.
*Pavers shall meet the minimum material and standard specifications for precast concrete pavers (CSA A231.2 in Canada; ASTM C936 in United States).
*Pavers shall meet the minimum material and standard specification for precast concrete pavers.
*Open space between pavers (i.e. joint space) typically ranges between 5 and 15% of the total surface area.
*ASTM No. 8 (5 mm dia.) crushed aggregate is recommended for fill material in the paver joints (typically HPB).
*For narrow joint pavers, a smaller sized aggregate may be used. Narrow joints are required where pavement must be AODA compliant.
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*For vehicle applications the minimum paver thickness is 80 mm
*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.
*For pedestrian applications the minimum paver thickness is 60 mm and joint widths should be no greater than 15 mm.
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