Application processes
  • Breaking Plan
  • Safety Measures
  • Selecting of suitable
  • Breaking Design
  • Drilling
  • Cutting Reinforced Bars
  • Burying Sheath Tubes
  • Capsule Type
  • Bulk Type
  • Water Absorption
  • Mix with water
    Loading (Tamp well with a tamping-rod)
  • Loading (Pour)
  • Crack Generation and Expansion
  • Secondary Breaking
  • Foundation of machinery
  • Foundation of buidings
  • Bridges and supporting structures
  • Sand barriers
  • Retaning walls
  • The head part of concrete piles moded at site
  • The temporary structures
  • Bedrocks for preparing housing lots
  • Bedrocks for new road construction and widening works
  • Bedrocks for port and harbor expanding works
  • Treating the remaining walls in mines
Drill hole diameter
Cex Broke / Capsule Type / Bulk Type

Large hole - 30-50 mm. / Ord. hole - 50-70 mm.

Hole length
Boulder Concrete Bench
Soft rock
Semihard rock
Hard rock
Unreinforced Concrete Reinforced Concrete Soft rock
Semihard rock
Hard rock
70-90 % of the object height.

70-90 % of the object height Deep enouugh but not to penetrate through

105 % of the object height.
Key point of designing

Better effects will be obtained if a free-face is provided in parallel to the direction in which cracks are required to be formed.

Where the spacings between holes are equal, cracks will appear more easily in parallet to the free-fae.

Shorten the spacing between holes in the direction in wich cracks are required to be formed.

For producing cracks effectively, the line of least resistance should be made 1/2 of the hole spacing.