TAC Corporation, in pursuit of happiness of all employees, and pursuing zero subsidence in all Shield construction projects.

TAC Corporation

Additive Injection Test

Additive Test

Additive Test Example (Part. 1)
Target Soil Layer Gravel Layer
Compound of Additive Mud Material TAC Carry 6.0kg/㎡
Injection Rate of Additive Mud Material 15% 20% 25% 30% 35%
Slump Value 2.0cm 10.5cm 18.0cm
Vane Shear Value 4.26kPa 1.71kPa 0.91kPa
Evaluation When grasped it feels stiff, it will remain so in your hand.
When grasped it spills from your hand due to softness.
Displays too much flowability due to softness. It will erupt from screw gate when gate is opened.
Additive Test Example (Part. 2)
pagetop

TAC Corporation