Hayward Baker Inc. is nearing completion of a design/build groundimprovement program to provide the required support.
Wet soil mixing is a ground improvement technique that improves the characteristics of weak soils by mechanically mixing them with cementitious binder slurry. To construct columns, a powerful drill advances drill steel with radial mixing paddles located near the bottom of the drill string. The binder slurry is pumped through the drill steel to the tool as it advances and additional soil mixing is achieved as the tool is withdrawn. The technique has been used to increase bearing capacity, decrease settlement, increase global stability and mitigate liquefaction potential for planned structures, tanks, embankments and levees.Quality controls include test sections and sampling of the soil mix material to verify that it is within the project specifications. On the Community Memorial Hospital project, Hayward Baker also used its proprietary special data acquisition (DAQ) equipment and software to monitor and control all mixing parameters in real-time during the wet-soil-mixing process.
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Source:Hayward Baker Website
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