Ｔrench cutting Ｒe-mixing Ｄeep wall
TRD - Soil Mix Walls
TRD soil mix walls are mixed-in-place walls that restrict groundwater flow and/or support excavations, using a specialized vertical cutter post mounted on a base crawler machine.
The vertical cutter post, resembling a large chain saw, is inserted vertically in segments by the crawler machine until the design depth of the wall is reached.
The crawler machine then advances along the wall alignment while the cutter post cuts and mixes the in situ soil with cement-based binder slurry injected from ports on the post.
The vertical mixing action blends the entire soil profile eliminating any stratification and creating a homogenous soil mix wall with extremely low permeability