Reno ReTrac Project
Reno, Nevada
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| Client: | Schnabel Foundation Company |
|---|---|
| Owner: | City of Reno |
Alluvium Grouting
In order to lower the existing railway line through the City of Reno, several structures required underpinning of the foundations. In order to facilitate the underpinning process, ACT was contracted to perform alluvium grouting.
The primary focus of the grouting operation was to consolidate, stabilize and reduce the insitu hydraulic conductivity of the alluvium prior to conducting the underpinning work. Upon completion of the grouting, excavations were performed without incident and the residual hydraulic conductivity was reduced to a value of 1x10-5 cm/sec resulting in a successful grouting program.
The alluvium grouting process required drilling through the overburden and installation of sleeve-pipes (tube-a-manchettes) in the alluvium. The sleeve-pipes were then injected with a combination of cement grouts and sodium silicate solution grouts. The grouting operation was monitored with electronic flowmeter and pressure transmitters (IntelliGrout®) in real time.
