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This document provides a detailed explanation of construction examples related to lightweight fill and lightweight materials (air milk, air mortar), as well as water pipes and gas pipeline-related projects. It includes examples of construction using air milk, SG grout, and foam mortar for "filling small-diameter abandoned pipes" and "filling temporary buried pipes." Additionally, it features examples related to cavities, narrow areas, and other construction cases, making it a useful reference. [Contents] ■ Construction examples related to lightweight fill and lightweight materials (air milk, air mortar) ■ Construction examples related to water pipes and gas pipelines ■ Construction examples related to abandoned pipes and buried sections ■ Construction examples related to cavities and narrow areas ■ Other construction examples *For more details, please refer to the PDF document or feel free to contact us.

• Other civil engineering works

We would like to introduce examples of construction work related to abandoned pipes and buried sections using air milk, SG grout, and foamed mortar. In the case of filling small-diameter abandoned pipes, we have a track record of filling a pipeline with a diameter of 200 mm and a length of 550 m. Additionally, there are numerous construction examples using SG grout, which is specialized for underwater filling (with an underwater-to-air strength ratio of over 80%). This mortar is not diluted in water, making it perfect for underwater filling. 【Case Study of Filling Abandoned Oil Supply Pipes】 ■ Area: Chiba Prefecture ■ Public/Private: Private ■ Details of Construction Location: Airport ■ Additional Information: Air Milk *For more details, please refer to the PDF document or feel free to contact us.

• Mortar and plaster materials
• Other civil engineering works

We would like to introduce a case where air milk and fluidized filling materials were used for the construction related to water supply pipes and gas pipelines. In the gas construction, we obtained certification for TOPERS (designated filling materials for high-pressure gas pipelines). Additionally, fluidized filling materials, which have high fluidity, are used in water supply and drainage related construction as filling materials for long existing pipes and casing pipes. 【Construction Case of Filling in Pipe-in-Pipe Water Supply Pipe】 ■ Area: Chiba Prefecture ■ Public/Private: Chiba Prefectural Enterprise Bureau ■ Construction Location: Water Supply ■ Additional Information: Air Milk *For more details, please refer to the PDF document or feel free to contact us.

• Mortar and plaster materials
• Other civil engineering works

We would like to introduce examples of construction related to cavities and narrow spaces using various materials. For seismic reinforcement column filling, we conducted seismic reinforcement work using non-shrink mortar at a road bridge pier. By appropriately mixing air into fluidized treated soil, we can achieve excellent lightweight and fluidity while suppressing the bleeding, which was previously a weakness. 【Underfloor Void Filling Construction Example】 ■ Area: Tokyo ■ Public/Private: Public ■ Construction Location: Railway ■ Detailed Construction Location: Within a railway vehicle base ■ Additional Information: Micro sand air mortar *For more details, please refer to the PDF materials or feel free to contact us.

• Mortar and plaster materials
• Other civil engineering works

We would like to introduce examples of construction work we have carried out on steep slope drainage pipes, Kao Viscotop, and retaining wall repair projects. The steep slope drainage pipes are essential for hydropower generation and use non-shrink mortar. The Kao Viscotop was constructed using decommissioned large-diameter water pipes, and the work was done under completely full siphon conditions. Additionally, in the retaining wall repair work, we carried out seismic retrofitting of the retaining wall. 【Retaining Wall Repair Project Examples】 ■ Area: Tokyo ■ Public/Private: Ota Ward ■ Construction Location: Road ■ Additional Information: Retaining wall renovation and seismic retrofitting *For more details, please refer to the PDF document or feel free to contact us.

• Mortar and plaster materials
• Other civil engineering works

There are numerous examples of construction using air milk and air mortar for lightweight embankments and related lightweight applications! In the lightweight embankment of the track slope, we conducted construction for a railway grade separation project in Tokyo using bubble mortar. Air mortar (air milk) can be utilized for various applications, including lightweight embankments for steep slope stabilization, reducing lateral earth pressure behind retaining walls, alleviating loads on buried structures, and lightweight construction in building floor areas. 【Steep Slope Stabilization Lightweight Embankment Construction Example】 ■ Area: Kanagawa ■ Public/Private: Private ■ Construction Location: Slope ■ Detailed Construction Location: A villa owned by the chairman of a certain listed company ■ Additional Information: "FCB Method" *For more details, please refer to the PDF materials or feel free to contact us.

• Mortar and plaster materials

"SG Grout" is a grout material that has high water resistance even in areas with spring water or stagnant water. It allows for the filling of long abandoned pipe methods called PIP, which was impossible with plastic mortars. Additionally, it is suitable for underwater filling as it is not diluted by water. [Features] - The raw materials consist of natural minerals and contain no organic substances such as fibers. - It shows high alkalinity when mixed, but it can be handled in the same way as other cement-based materials without any issues. *For more details, please download the PDF or feel free to contact us.

• Water Supply Facilities

In the pipe-in-pipe construction method, several PVC pipes are installed as injection pipes for mortar filling, and the filling method is applied by repeatedly relocating them in sequence. ■ No restrictions on the types of inner pipes such as gas high-pressure conduits, ductile pipes, FRPM pipes, steel pipes, etc.! ■ No need for detection wires; installation is possible at any desired location! By providing a specially structured component near the tip of the injection pipe, filling can still occur from the tip area even if the mouth of the injection pipe is blocked, eliminating the risk of cavities due to insufficient filling or blockage of the injection point, which would prevent filling at the designated location. 【Features】 ■ No need for detectors ■ No need for detection wires ■ Installable at any desired location ■ Uses a special detection method *For more details, please refer to the PDF document or feel free to contact us.

• Special Construction Method

In the pipe-in-pipe construction method, mortar filling is applied using grout holes from the inner surface of the newly installed pipe. ■ It demonstrates great effectiveness for filling from grout holes in steel pipes, FRPM pipes, etc.! ■ The number of grout holes can be reduced (spaced out)! This backfill filling system not only improves fillability but also takes safety and the existing environment into consideration. Filling the gap between the existing pipe and the new pipe in the pipe-in-pipe method is one of the important processes. By eliminating the potential air pockets that may occur at the joints of the filling materials with this method, complete filling becomes possible. 【Construction Flow】 ■ 1. Install ventilation material in the existing pipe and set up the new pipe. ■ 2. Fill the filling material on the first day from the initial injection hole. ■ 3. Drill the communication holes in the filling area. ■ 4. Install a vacuum device and pressure detector in the communication holes. ■ 5. Activate the system and fill the second batch of filling material. ■ 6. Vent the air from the air pockets to achieve complete filling. * For more details, please refer to the PDF document or feel free to contact us.

• Special Construction Method