Tube a Manchette (TAM) grouting method involves the use of perforated pipe along with a special sleeve grout. These pipes/tubes are then inserted into the hole for grouting with short sections of rubber sleeve (Manchette) on the outer part of the pipe that acts as a one-way valve.

Double packer is used to pump the grout into manchette tube until the packer is halfway past the set of the holes drilled into the tubes. Grout is pumped into the hole between confining packers by applying pressure. Pressure pushes the grout past the small rubber sleeves to cover perforation, rupture the sleeve grout and enter the soil.

Common uses

Tunnel excavations

Cofferdams

Cohesion-less granular soils

Advantages