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Soil Mixing


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Geo-Solutions offers state-of-the-art techniques to remediate soil and wastes in situ, including In Situ Solidification/Stabilization (often referred to as ISS or S/S). Geo-Solutions utilizes two techniques of vertical auger mixing, Shallow Soil Mixing (SSM) and Deep Soil Mixing (DSM). Both SSM and DSM offer the advantage of cost savings through remediation in-place versus the high cost of offsite disposal.

SSM provides for economical mixing for in situ solidification/stabilization/fixation of soils or sludges to depths as deep as 45 feet below ground. This system utilizes large diameter augers (LDA) of diameters of 3-12 feet to uniformly mix contaminated soil or sludges with treatment reagents such as cement, ground granulated blast furnace slag (GGBFS), bentonite, or chemical oxidants/ reduction agents. SSM is typically installed in an overlapping "brick" pattern that provides full horizontal and vertical coverage over a site. Many sites require attention to odor and vapor concerns during mixing to manage these nuisances, the equipment can be fitted with a shroud to capture vapors or dusts that could be produced.

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DSM is capable of In Situ Solidification/ Stabilization to depths of 120 feet without excavation. DSM has been proven successful in a remedial operation conducted under the auspices of the USEPA's Superfund Innovative Technology Evaluation (SITE) Program. This technique uses Geo-Solutions' specially designed multiple-auger DSM rig that provides for complete homogeneous mixing of treatment chemicals and contaminated soils.

Both SSM and DSM provide cost-effective solutions to civil engineering projects as foundation systems. SSM columns can be arranged into gravity retaining walls or mat foundations for ground improvement. DSM walls can be steel reinforced to provide structural retaining walls similar to diaphragm walls or sheet piling. In situ soil mixing minimizes soil movement and maximizes structural integrity.



 
   

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