DAEILTEC

Quality Assurance

• Strength Test

  showed a result superior to that of asphalt in the performance assessment of stone and
  other types of pavement conducted by the Seoul Metropolitan Government

  • Asphalt 3D Hole Block

    economics

  • Asphalt 3D Hole Block

    commonality

  Compared to asphalt, 3D hole block
  for roadway showed superior performance
  in terms of economic value and serviceability
  > Solving problems of pot hole, scaling and bond destruction caused
  by pavement material damage

  

  Suitable as block
  for roadway

  Internal permeable hole block test result

  Assessment items	Compared to KS (KS4419)	Internal minimum criteria for permeable hole block	Actual performance produced in test
  Bending strength	4.0 MPA	4.0 MPA	6.48 MPA
  Thickness of colored layer	6mm or higher	6mm or higher	8mm or higher

  Source: Engineering Journal(http://www.engjournal.co.kr)

  

• permeability Test

  Durability test of permeability is conducted to check and verify how much the permeability of
  the porous and permeable road pavement constructed in the field is decreased when exposed to
  
  an external environment

  DaeilTec’s
  
  permeable block is
  3rd grade or higher

  

  • High permeability to prevent surface runoff
    of rainwater on the surface in urban area
  • Contributes to recovery of natural water cycle

  * In principle, products of higher grades must be used preferentially, and products not eligible for grading cannot be used
  in Seoul (products to have a grade of 3 or higher)

  Applied criteria * Standard Permeability Coefficient at the Early Phase of Porous and Permeable Pavement (KS) : 0.1mm/sec or higher

  Classification	grading 1	grading 2	grading 3	grading 4	grading 5
  Coefficient of permeability (mm/sec)	1.0 or higher	0.5 or higher Less than 1.0	0.1 or higher Less than 0.5	0.05 or higher Less than 0.1	Less than 0.05