Pervious bricks: Compressive strength according to GB/T 25993-2010 "Pervious pavement bricks and permeable waterway panels": sidewalk/pedestrian street: average value ≥40MPa, minimum value of single block ≥35MPa; Square/parking lot: average value ≥ 50MPa, minimum value of single block ≥ 42MPa; flexural strength: sidewalk/pedestrian street: average value ≥ 5MPa, minimum value of single block ≥4.2MPa; square/parking lot: average value ≥ 6MPa, minimum value of single block ≥ 5MPa; water permeability coefficient: ≥1.0×10 ² cm/s (i.e. 0.1mm/s); wear resistance: wear pit length ≤35 mm.
Code for Construction and Quality Acceptance of Urban Road Engineering (CJJ 1-2008), Code for Design of Hydraulic Retaining Walls (NB/T11089-2023)