Ground improvement work using large-diameter mechanical mixing deep mixing method "RAS Column Method"
Reliable construction is possible! High-quality and homogeneous improved bodies are achieved through deep mixing treatment!
The "RAS Column Method" is classified as a mechanical mixing method for deep mixing treatment, which improves the ground by forcibly mixing the original soil with cement milk using mixing blades. The drilling and mixing mechanism features a double-tube structure where the inner and outer shafts rotate in opposite directions. The inner shaft has specialized blades for drilling hard ground with high torque, while the outer shaft has blades specifically for mixing. Utilizing the effects of the forward and reverse rotation of this mechanism ensures the production of high-quality and homogeneous improved material. 【Features】 ■ Improvement diameter of up to 2,500mm is possible with a high-output auger ■ Capable of penetrating hard ground ■ The issue of cohesive soil rotating together, which has been a problem in the past, is resolved by the forward and reverse rotation ■ The rigidity of the rods is high, and the mutual forward and reverse rotation in the double-tube structure improves drilling vertical accuracy ■ The construction management system allows for real-time monitoring of the construction status *For more details, please refer to the catalog or feel free to contact us.
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For more details, please refer to the catalog or feel free to contact us.
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【Uses】 ■Foundation ground improvement for structures ・Building foundations ・Tank foundations ・Retaining wall foundations ・Culvert foundations ■Others ・Liquefaction prevention ・Subgrade settlement prevention ・Embankment sliding prevention ・Stability of cut slopes ・Uplift prevention ・Underground cut beam construction ・Self-supporting retaining walls *For more details, please refer to the catalog or feel free to contact us.
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Company information
In the mid-1950s, during a period of construction boom leading up to the Tokyo Olympics, Asou Sangyo Co., Ltd. (now Asou Corporation) focused on the increasing demand for lightweight and labor-saving high-rise buildings. They recognized the advantages of using aerated concrete (air mortar), which excels in lightweight properties and thermal insulation, as insulation material, and established the company with the aim of manufacturing and constructing building-grade aerated concrete. The unique technology developed through research and development of imported technology from the United States, along with the excellent characteristics of their product (aerated concrete), matched the needs of the times. It was used for waterproofing on rooftops to reduce the weight of high-rise buildings, raising floor slabs on each floor, and embedding piping in mechanical rooms. Subsequently, the lightweight properties of aerated concrete attracted attention from various fields, leading to its adoption in numerous civil engineering projects, including the Tōkaidō Shinkansen construction. To date, the construction achievements have exceeded 10 million cubic meters, and the company continues to provide satisfaction to the times and society as a pioneer of air mortar and a technology development-oriented enterprise that responds to various needs.