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Jet-grouting System

The combination of a down-the-hole hammer with an integrated jet monitor enables drilling and jet grouting in difficult formations. The innovative Wassara Jet Grouting Hammer provides a solution for single pass jet grouting with single fluid in most formations.

Where boulder and other obstacles have made jet grouting complicated, the Wassara Jet Grouting Hammer makes it easier.



Jet grouting difficulties

Difficult formations

Could require casing of the hole


The Wassara method

Single pass jet grouting with Wassara


Enables single pass Jet Grouting in all formations

1. Channel for the high pressure cement grout

During jetting, the cement grout is delivered through this channel with pressures up to 500 bar.

2. Channel for the high pressure water

The water is powering the hammer while drilling. Normal water pressure is 100-150 bar. During jetting, a small amount of water is running to keep the cement grout from entering the hammer.

3. Wassara nozzle

Wassara Jet grouting hammer has four nozzle Sockets for multiple configuration and backup. Nozzle hole sizes range from Ø 3.0 to 6.0 mm.

4. Wassara drill bit

This drill bit is particularly designed for use with Wassara water powered hammers.


Interested in more details regarding our 4" Jet grouting hammer: W100JG - read here.