九洲日東 List of Products and Services

This technology is a ground improvement method that allows for the production of improved soil with a specified strength by setting the additive rate of solidifying agents according to the soil characteristics of the target ground. The improved soil achieves strength in a short period, enabling early use. Since no consolidation settlement occurs, the upper soil does not deform. Additionally, our company can implement both wet and dry improvement methods under a complete construction management system, tailored to various soil and ground conditions. 【Features】 ■ Improved soil with specified strength can be obtained ■ Improved soil achieves strength in a short period, allowing for early use ■ No consolidation settlement occurs, preventing deformation of the upper soil ■ Low vibration and low noise ■ Minimal impact on surrounding areas *For more details, please refer to the PDF materials or feel free to contact us.

• Ground improvement

This technology is a drilling method that excels in mobility, allowing for a speedy setup from equipment assembly to construction. Using "down-the-hole" air drive to excavate rock formations, the impact force is transmitted directly to the bit without passing through the rod, resulting in high work efficiency. Additionally, the exhaust air blows away the excavated debris, keeping the drilling surface constantly clean, enabling efficient construction. The bit can be replaced according to the geological conditions. 【Features】 ■ Can be used in narrow sites or areas inaccessible to large machinery ■ Excavated debris is discharged by air lift ■ Enables efficient and economical construction ■ The drilling surface is constantly cleaned *For more details, please refer to the PDF materials or feel free to contact us.

• Special Construction Method

We would like to introduce the "Rock Auger Method." The technical capabilities of the "Rock Auger" have significantly improved in recent years, and as a result, the range of applicable construction methods has also expanded greatly. By using a casing that rotates in the opposite direction on the outside, our company can ensure reliable construction with high excavation efficiency and very good construction accuracy. There are a wide range of applicable construction examples, so please feel free to contact us for more details. 【Features】 ■ Can be constructed with high excavation efficiency and very good construction accuracy ■ Applicable to most ground conditions, including gravel layers, cobble layers, boulder layers, and bedrock layers ■ Low vibration ■ Low noise *For more details, please refer to the PDF materials or feel free to contact us.

• Special Construction Method

This technology uses a dual-axis coaxial drilling machine to embed steel pipe piles through an inner excavation foundation pile embedding method. The augers used are formed by an auger that rotates the screw and an auger that rotates the steel pipe. Each type comes in both separate and single models, which are selected based on construction conditions. Additionally, when excavating gravel layers or bedrock layers, a necessary number of ultra-hard pipe bits for the cutting edge are attached to the tip of the steel pipe pile. 【Features】 ■ Extremely strong pull-out resistance ■ Embedding in gravel and bedrock is also possible ■ Vertical accuracy is exceptionally good ■ Soil is returned to the steel pipe after embedding, resulting in minimal soil disposal ■ Construction can be performed with low vibration and low noise *For more details, please refer to the PDF document or feel free to contact us.

• Civil Engineering Method

This technology is a foundation pile embedding method that demonstrates its effectiveness in unstable ground, such as gravel layers in the intermediate layer. First, a large auger screw is used for the first excavation based on the pile diameter, while simultaneously injecting cement milk and mixing it to solidify the excavation hole. After allowing some time for solidification, a second excavation is performed, and root-fixing milk and surrounding stabilizing liquid are injected to embed the pile. 【Features】 ■ Effective in unstable ground ■ Increased bearing capacity ■ Can be constructed with low noise and low vibration *For more details, please refer to the PDF materials or feel free to contact us.

• Civil Engineering Method

We would like to introduce the "Special Yattoko Method." The "Special Yattoko" developed by our company is a Yattoko specification that does not cut any piles and has been highly evaluated by various government agencies. This product is made of steel pipes with the same diameter as the piles and is installed in the bolt holes of the pile heads to integrate with the piles, allowing for the embedding of four or more long bolts. After inserting the piles, the portion above ground is checked for pile alignment using a transit level, and temporarily fixed with a wooden camber. Then, the bolts protruding above ground are loosened and pulled out. **Features** - Economical - Does not compromise pile performance - No reinforcement due to pile misalignment - Yattoko construction is possible up to a maximum of 10m - Usable for PHC piles, joint piles, steel pipe piles, and H-beams *For more details, please refer to the PDF document or feel free to contact us.*

• Civil Engineering Method

This technology is a foundation pile embedding method that ensures reliable construction by inserting piles into a casing, preventing damage to the piles from impacts and other factors. It can be implemented even in ground conditions with groundwater flow and where excavation holes are prone to collapse. Additionally, after inserting the piles into the casing, surrounding sand is filled and the casing is pulled up, preventing groundwater contamination. Moreover, this method is particularly effective in a wide range of ground types, including gravel layers, cobble layers, and boulder layers. 【Features】 ■ Uses auger screws and donut auger machines ■ Enables reliable construction ■ Extremely effective for groundwater contamination prevention ■ Reduces the discharge of industrial waste ■ Effective in a wide range of ground types *For more details, please refer to the PDF materials or feel free to contact us.

• Civil Engineering Method

This technology involves using a multi-axis earth auger equipped on a three-point pile driver to drill into the original ground while mixing and stirring with a cement-based slurry to create a continuous wall and insert stress materials with appropriate strength. By utilizing mixing devices that are suitable for the soil conditions, it is possible to create a uniform and high-quality continuous wall. Additionally, it can be used for various applications such as retaining walls, water-stopping walls, underground collapse prevention walls, various ground improvements, and pre-drilling for sheet pile driving in hard ground, making it versatile across a wide range of uses. 【Features】 ■ Can be constructed if there is more than 400mm between adjacent structures and the soil core ■ By changing the drilling and mixing device, it is possible to increase the pile diameter ■ Usable across a wide range of applications *For more details, please refer to the PDF materials or feel free to contact us.

• Civil Engineering Method

The "Cement Milk Casing Method" is a construction technique that adds a casing rotation mechanism to the outside of the auger screw, allowing the auger screw and casing to rotate relative to each other while excavating. This method is effective across a wide range of ground conditions, and can be applied to gravel ground, cobble layers, boulder layers, bedrock layers, sloped bedrock layers, and ancient cave layers in former coal mine sites. 【Features】 - The relative rotation of the auger screw and casing ensures excellent vertical accuracy of the excavation hole. - There is almost no high stopping of the piles. - The adhesion between the piles and the original ground is good. - There are no concerns regarding bearing capacity. *For more details, please feel free to contact us.

• Pile and foundation work
• Ground foundation construction method