After boring to specified depth (bearing layers), injecting in boring slurry, root-hardening cement slurry is pumped in to a boring tip part. Then pulling up earth auger while fixed slurry pumping into bored hole, it builds to a hole and a pile is installed into root hardening slurry by pressing or light blowing.

By root hardening and round of pile fixed slurry, a pile and the layers are made to unify and bearing capacity is ensured. Although it can piling works in low vibration and low noise.

For application pile diameter, about 300-600mm and the maximum pile length are about 35m.

• 1Boring, injecting out boring slurry.
• 2Pull up earth auger, pumping root-hardening cement slurry after augering to predetermined depth.
• 3Switch root-hardening slurry to pile fixed slurry, and pull up earth auger.
• 4Insertion of the pile.
• 5A pile is fixed to bearing layers by pressing fit or light blows.