徳倉建設 List of Products and Services

The "Juuten Bag Method" is an evolved construction technique that addresses the challenges of embankment work and provides a more reliable repair solution. As a solution to the issues of outflow prevention and loss reduction associated with slurry-based filling materials, we have developed a bag (Juuten Bag) for LSS filling. This bag is folded and inserted into underground cavities through conventional filling holes, allowing for the filling of LSS. It expands to fit the shape within the cavity, eliminating the risk of outflow since it is contained within the bag. The construction is simple as it does not require large heavy machinery. 【Features】 ■ Evolution of embankment work with LSS + "Juuten Bag" ■ Identification of the causes of cavity formation, allowing for construction without repairs ■ Underwater construction is possible ■ Minimal ground excavation reduces construction time ■ Simple construction without the need for large heavy machinery *For more details, please refer to the PDF document or feel free to contact us.

• Renovation and repair methods

At Tokukura Construction Co., Ltd., we provide a total technology service for filling underground cavities, from investigation to construction, using our recycling technology for construction-generated soil known as Fluidized Treatment Soil (LSS Method) as a filling material. By shipping from our permanent fluidized treatment plant, we can perform a wide range of filling operations, from small cavities to large-scale cavity filling using on-site fluidized treatment plants. We ensure reliable filling using dedicated cavity investigation cameras and filling confirmation sensors. 【Features】 ■ Total technology service for filling underground cavities from investigation to construction ■ Capable of filling a wide range of cavities, from small to large-scale ■ Reliable filling construction using dedicated cavity investigation cameras and filling confirmation sensors *For more details, please refer to the PDF document or feel free to contact us.

• Civil Engineering Method

Tokukura Construction Co., Ltd. is engaged in filling work for unnecessary cavities. We will introduce examples of cavity filling work, starting with the filling of a sub-bituminous coal abandoned mine under the national highway. In the construction, the use of cavity inspection cameras allowed us to identify the locations of filling holes, leading to increased efficiency in the construction process. 【Example】 ■ Filling of the sub-bituminous coal abandoned mine under the national highway - Construction location: Mitake Town, Kani District, Gifu Prefecture - Construction period: May 29, 2015 – January 29, 2016 - Construction overview: Construction length L=160m, filling volume V=3,000m3 Number of filling hole borings N=18 Number of filling reach observation holes N=20 Filling volume V=3,000m3 *For more details, please refer to the PDF document or feel free to contact us.

• Other civil engineering works

The "Cavity Investigation Camera System" is a visualization system for underground cavities that uses a fully waterproof camera designed for cavity investigation. It can be inserted through a borehole with a drilling diameter of approximately 10 cm and can capture images underwater. The direction of the camera can be determined, and the images can be checked in real-time. This system can be used for various investigations, including abandoned mines, underground cavity surveys, deformation surveys of underwater sheet pile revetments, and investigations of hazardous areas that are inaccessible to people. 【Features】 ■ Can be inserted through a borehole with a drilling diameter of approximately 10 cm ■ Capable of underwater imaging ■ Direction of the camera can be determined, and real-time confirmation is possible ■ The camera can be operated and tilted to check the bottom of the cavity ■ A small-scale cavity investigation camera is used for investigating cavities beneath road surfaces *For more details, please refer to the PDF document or feel free to contact us.

• Environmental Survey

The "Void Filling Confirmation Sensor Technology" focuses on the significant difference in electrical conductivity between fluidized treated soil and air or groundwater, allowing for continuous measurement of voltage with sensors. In the field, data is transmitted via wireless communication and mobile phone communication to the cloud. By accessing the cloud, data can be verified both inside and outside the site. By utilizing this sensor, real-time confirmation of filling is possible, enabling adjustments to the filling amount and reducing concerns about re-filling. 【Features】 ■ Continuous voltage measurement with sensors ■ Real-time filling confirmation ■ Wireless communication available on-site ■ Data on the cloud can be verified both inside and outside the site *For more details, please refer to the PDF document or feel free to contact us.

• others
• Other measuring instruments

Tokukura Construction Co., Ltd. proposes four technologies to address underground cavities. If you are troubled by unnecessary underground cavities, please do not hesitate to contact Tokukura Construction. 【Tokukura Construction's Proposals】 ■ Investigation - An investigation to identify the existence and location of underground cavities and to determine construction conditions. ■ Construction Plan (Filling Plan) - Consideration of the mix design of LSS fluidized treatment soil and construction methods related to filling. ■ Construction (Filling Work) - Construction is carried out while ensuring safety, quality, and schedule, adapting to the site conditions. ■ Reliable Filling and Cavity Visualization Technology - Development of sensors to support reliable filling and cameras to visualize cavities. *For more details, please download the PDF or feel free to contact us.

• Other construction services
• Other civil engineering works

The "PP Method" is a revolutionary seismic reinforcement technique that demonstrates its effectiveness in locations where traditional RC wrapping methods cannot be applied due to construction limits or issues related to river cross-sectional obstruction. Based on the reinforcement ethics of RC and built upon experiments of the PSR method, the reinforcement effect has been confirmed through the public experiment "Positive and Negative Alternating Load Test of Bridge Piers Reinforced with PP MagneLine." It has been adopted as a pilot project by the Ministry of Construction and is gaining attention as a reinforcement method under stringent conditions. 【Features】 ■ Applicable in cases where construction limits or river cross-sectional obstruction are issues ■ Reduces dead load and has minimal impact on foundations ■ Simple construction without the need for formwork ■ Allows for extended lifespan through corrosion prevention effects simultaneously with reinforcement ■ Visual inspection is possible after reinforcement *For more details, please refer to the catalog or feel free to contact us.

• Airport facilities
• Renovation and repair methods
• Other construction services