Notice of Participation in the 7th International Construction and Surveying Expo (CSPI-EXPO 2025) from June 18 (Wednesday) to June 21 (Saturday), 2025.

Corresponds to various sharp curves! A construction method for clients who want to reduce costs or shorten construction time.

The "TDR Shot Lining System Method" is a secondary lining construction system for shield steel segment sections. It responds to needs such as "wanting to fill steel segments in shield tunnels with sharp curves," "wanting to shorten construction time," and "wanting to increase construction speed." By introducing this method, it can accommodate sharp curve sections that are difficult to construct with conventional methods, and it can fill various areas of steel segments, achieving high density. 【Benefits of Implementation】 ■ Achieved approximately 1.7 times construction progress - T Construction Co. ■ Able to handle sharp curve sections that are difficult to construct with conventional methods ■ Can fill various areas of steel segments, resulting in high density *For more details, please refer to the related links or feel free to contact us.

• Tunnel construction
• Renovation and repair methods
• Civil Engineering Method

Supports shield construction! Low dust and low rebound spraying can be compactly achieved!

The "PF Mortar Spraying System" can be constructed according to the required amount on-site, making it possible to implement a compact and simple system when needed. It offers high strength, easy operation, and the ability to spray in areas with water inflow. Low dust and low rebound spraying can be achieved in a compact manner. This system can be used for spraying in small cross-section tunnels, primary spraying reinforcement in unconsolidated ground, and for repair and widening work in existing tunnels. 【Benefits of Implementation】 ■ High strength, easy operation, and capability to spray in areas with water inflow ■ Can be constructed according to the required amount on-site ■ Can be implemented when a compact and simple system is needed *For more details, please feel free to contact us.

• Tunnel construction
• Renovation and repair methods
• Civil Engineering Method

A method of selecting and spraying high-quality mortar that meets various requirements and performance based on its intended use!

The "TDR Shot Lining System" is a technology based on a wet spraying method of high-performance mortar for the repair of deteriorated concrete cross-sections. It was developed to fill the gaps between steel segments and the finished surface of the lining, which are expected to be difficult to address with conventional cast-in-place lining concrete. By using a continuous mixing mixer, it enables large-volume mortar spraying. 【Features】 ■ Can accommodate various sharp curves ■ Easily adapts to special shapes and structures ■ Materials can be selected according to the tunnel's application ■ Can fill every corner of the steel segments, achieving high density ■ Fast construction speed *For more details, please refer to the related link page or feel free to contact us.

• Special Construction Method

It is possible to carry out the necessary amount of work at the site in a short time when needed! We are currently providing case materials for repairs of existing water supply tunnels and existing railway tunnels.

The "Disaster Recovery Tunnel Repair Spraying Construction System" achieves low dust and low rebound through the synergistic effect of liquid quick-setting agents and Denka PF mortar. Denka PF mortar has high compressive and flexural strength, and its toughness is also improved. It has good adhesion and can be sprayed even in areas with water inflow. With the push of a button, automatic spraying is possible, making operation and cleaning simple, and it can be constructed using only the compact M-PAC (spraying system). 【Features】 ■ Low dust and low rebound ■ High strength ■ Easy operation ■ Compact ■ Pre-mixed *For more details, please refer to the PDF materials or feel free to contact us.

• Earth retaining wall/foundation reinforcement

Corresponds to various sharp curves! Secondary lining construction system for shield steel segment sections.

We would like to introduce a case study of the "TDR Shot Lightning System." This method can easily accommodate special shapes and structures. It can fill every corner of the steel segments, achieving high density. In the sewer pipe and machine remnants (underground joints) of the second Toyama trunk line construction, it was applied with a finished inner diameter of 2400mm and a total length of 20m. 【Features of the Method】 ■ Accommodates various sharp curves ■ Easily adapts to special shapes and structures ■ Materials can be selected according to the tunnel's purpose ■ Fast construction speed ■ Easy maintenance ■ Excellent economic efficiency and shortened construction period *For more details, please refer to the PDF materials or feel free to contact us.

• Special Construction Method

Introducing a system composed of an electric dust collector, a self-propelled crawler cart, and an expandable duct.

The "Eco Station System" is a vacuum collection and ventilation system for tunnel excavation work, integrated with a self-propelled crawler cart, dust collector, and telescopic duct. It is composed of an electric dust collector, a self-propelled crawler cart, and a telescopic duct. Since the system is not suspended from the tunnel ceiling, it does not obstruct the lighting sources in the tunnel, ensuring adequate illumination and good visibility, which contributes to safe operations. 【Features】 - There is no risk of the system falling from the tunnel ceiling due to contact with heavy machinery booms, as it is not suspended. - There is no need for unsafe high-altitude repositioning. - It does not obstruct lighting sources, ensuring adequate illumination and good visibility for safe operations. - It can be moved to various dust generation work points throughout the tunnel for dust collection. *For more details, please refer to the related link page or feel free to contact us.*

• Tunnel construction

Introducing a groundbreaking method for subsidence suppression by implementing preload on support structures and the ground to control sinking!

The "Preload Shell Method" is a subsidence suppression auxiliary system that integrates the ground and the support structure by setting a bag (jacket) between them and injecting non-shrink mortar into the bag, thereby ensuring reliable support capacity. The "Preload Jacket" is a bag made of seamless tubular fabric equipped with an injection port with a check valve, allowing for easy injection work due to the presence of the check valve. Additionally, the "Preload Mortar" is a premixed type of rapid-setting filling material (Denka Preload Mortar) developed for the Preload Shell Method. You can also view materials regarding construction procedures and adoption results. Please feel free to contact us when needed. 【Features】 ■ Revolutionary subsidence suppression method ■ A bag is set between the ground and the support structure, and non-shrink mortar is injected into the bag ■ The support structure and the ground are integrated, demonstrating reliable support capacity *For more details, please refer to the PDF materials or feel free to contact us.

• Civil Engineering Method

Heat stroke prevention! Energy-saving cool air generation device capable of cooling underground temperatures from 30-32°C to below 28°C.

The "M-Cool" is an energy-saving cooling device that generates cool air by directly exchanging heat between spring water and hot air using a radiator. It can be loaded onto a 2-ton truck, making it easy to transport and retreat near the work site. The cool air directly affects the workers, lowering their perceived temperature. By applying this product, the underground temperature of 30-32°C can be cooled to below 28°C, and it can discharge air at a speed of over 4 m/s, providing an ideal underground environment. 【Features】 ■ Low power consumption without using a chiller ■ Compact and mobile ■ Large air volume of 1,000 m³/min ■ Easy installation ■ Maintenance-free *For more details, please refer to the PDF document or feel free to contact us.

• Ventilation system

The material loss during mixing with the mixer is minimal, and it helps reduce rebound and dust.

The "Subshot System" continuously supplies special fiber-reinforced mortar "Denka PF Mortar" using a mixing pump and combines it with a liquid quick-setting agent "Denka Subshot L" to enable continuous spraying construction from the rear carriage of a TBM (Tunnel Boring Machine) and other equipment. This allows for rapid construction, reduction of underground work, and improvement of the working environment. Additionally, it minimizes material loss during mixing and kneading, reduces rebound, and decreases dust. 【Features】 ■ Continuous spraying construction from the rear carriage ■ Enables rapid construction, reduction of underground work, and improvement of the working environment ■ Minimal material loss during mixing and kneading ■ Reduces rebound and decreases dust *For more details, please refer to the related link page or feel free to contact us.

• Systems Architecture

High-quality sprayed mortar can be obtained! We have a range of construction machinery that can be adapted to the construction conditions.

"Denka PF Mortar TYPE-K" is a pre-mixed mortar that combines special admixtures, finely graded fine aggregates, and high-quality fibers. It is mixed and pumped using a continuous mixing pump. A dedicated acidic liquid quick-setting agent, "Denka Subshot K," is added at the nozzle tip and sprayed using a special spraying nozzle. Additionally, you can view examples of PF mortar applications and achievements based on different uses, so please feel free to contact us when needed. 【Features】 ■ The incorporation of high-quality fibers improves bending strength, reduces brittleness, and enhances toughness. ■ Excellent quick-setting properties are achieved. ■ Superior initial and long-term strength are obtained. ■ Excellent low dust and low rebound spraying is possible. ■ The acidic liquid quick-setting agent used is safer for the human body compared to conventional alkaline liquid quick-setting agents. *For more details, please refer to the PDF materials or feel free to contact us.

• Mortar and plaster materials

Fujikohsuhou Co., Ltd. will hold an online seminar titled "Laser Cladding Material-Specific Data" on September 24, 2025 (Wednesday). In laser cladding, powders based mainly on three types of elements are used: Cobalt (Co-based), Nickel (Ni-based), and Iron (Fe-based). This seminar will explain the characteristics and issues of these powders in laser cladding. It will be a useful reference when selecting powders. 【Recommended for】 ■ Those who want to know the laser cladding characteristics of various powders ■ Those considering laser cladding but unsure which powder to use

Nitto Kohki will exhibit at the "30th Mechanical Components Technology Exhibition [Tokyo]" held at Makuhari Messe Hall 5 from July 9 (Wednesday) to July 11 (Friday). [Booth Number: Hall 5 31-32] At this exhibition, we will showcase a variety of products, including the electric suction hand "e-VEE" with a built-in pump that requires no compressed air, a cordless belt sander, the electric driver "Delvo" that can be mounted on robots, and the "Flow Monitor" that allows for easy visualization of coolant flow in molds and other applications.

Announcement of an online seminar hosted by the Fukushima Prefecture High-Tech Plaza. □■━━━━━━━━━━━━━━━━━━━━━━━━━■□ 　　　　First-Time AI and IoT Trial Kit Utilization Course 　　　　　　Archive (Recording) Now Available! □■━━━━━━━━━━━━━━━━━━━━━━━━━■□ 　　　 Are you aware of the AI and IoT trial kits that are available for free loan exclusively to companies in Fukushima Prefecture? This time, we will introduce the AI trial kit that detects foreign objects and irregular shapes using a camera and AI, as well as the IoT trial kit that helps visualize manufacturing sites and improve productivity and quality. ▼ For example… ・AI Kit: Automatically detects foreign objects and irregular shapes from camera footage ・IoT Kit: Displays sensor information such as temperature and humidity in real-time graphs The content is designed to help you visualize "how it can be used on-site." This 45-minute session is perfect for those who want to "see it first" or "try it out." <Content> 　1. Introduction to FMDX - Fukushima Manufacturing Digitalization Promotion Project 　2. Introduction to AI and IoT trial kits 　3. Demonstration of AI and IoT trial kit operations

We are pleased to announce the archive distribution of our company's hosted web seminar. 'Mojitori' allows you to digitize text from photos, images, PDF files, and automatically input it into various fields in kintone. In this seminar, we will clearly explain the basic usage and application methods of Mojitori for those who are using it for the first time. The content is designed to be accessible for beginners, and we will introduce Mojitori while sharing user case studies. We look forward to your registration.

Notice of Archive Distribution for Our Hosted Web Seminar. 【Make kintone Even More Convenient! Seminar on Utilizing the kintone Plugin "StockNaut"】 ◆ Seminar Overview We will provide a clear explanation of the kintone plugin "StockNaut," which allows you to write text while pasting multiple images into a multi-line text field. We will also introduce the generative AI "kintone AI Lab," which was released in April 2025. By combining generative AI, you can experience the benefits of StockNaut at 120%! We welcome those who are struggling with document creation and those who want to learn more about kintone AI Lab to join us. 【Timetable】 - Introduction to StockNaut - Introduction to kintone AI Lab - Easy Inquiry Resolution Demo using StockNaut × FCS Internal Wiki - Combination Utilization Demo of StockNaut × kintone AI Lab - Q&A Session We look forward to your registration.