Single-Auger Large-diameter (DSM)
For Large Diameter, homogenous Column Improvement with RAS Column
RAS Column is an advanced deep soil mixing method based on mechanical soil mixing technology to produce soil-cement columns of 1.4 to 2.5m in diameter.
The mixing head has a counter-rotation mechanism. The bottom auger and mixing blades rotate clockwise, while the upper mixing blades rotate counter-clockwise.
This unique mechanism efficiently breaks and mixes in-situ soil with cement-based reagents, producing more homogenous and higher-quality soil-cement columns. It eliminates the "turning together" problem, often encountered by conventional mechanical soil mixing methods, that cohesive soil co-rotates with the mixing head, causing insufficient mixing and unexpected deficiency of columns.
RAS Column efficiently improves the foundation soil of building and civil engineering structures to increase bearing capacity and prevent liquefaction.
Advantages
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Applicable to a wide range of soils, providing excellent quality improvement
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Significant diameter column improvement of diameter of 1.4m to 2.5m.
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Uniform mixing and homogenous product quality due to counter-rotation mechanism
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Computer-based control and monitoring system ensures quality improvement
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Improvement efficiency in product strength and production speed saves on cost
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Flexibly adaptable to site-specific improvement requirements
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Low noise and low vibration system
