ヒロセ補強土 List of Products and Services

"TerraArm" is a reinforced soil wall construction method that has been officially certified for partial repair methods of wall materials in the "Reinforced Soil Wall Design and Construction Manual" published by the Civil Engineering Research Center. Traditionally, core sampling was essential for evaluating the integrity of reinforced soil, making the pull-out testing process cumbersome. However, with KD panels and TerraArm FS, simplified inspections are now possible. This allows for early detection of deterioration within the TerraArm and enables understanding of the internal conditions of the wall. It has demonstrated high seismic resistance even in areas affected by strong earthquakes such as the Tohoku Pacific Offshore Earthquake, the Niigata Chuetsu Earthquake, and the Southern Hyogo Earthquake. [Features] ■ Easy removal of wall materials and reinforcements ■ Possible repair work in small spaces ■ Ability to confirm integrity after use ■ Easier maintenance management *For more details, please refer to the PDF document or feel free to contact us.

• Renovation and repair methods
• Reinforced earth wall
• Reinforcement and repair materials

The "EPS method" involves stacking large blocks of expanded polystyrene as fill material, effectively utilizing the characteristics of the material such as lightweight, compressive strength, water resistance, and self-supporting properties when stacked. It can be applied in areas where there is a need to reduce load and soil pressure, such as fill on soft ground, fill on steep slopes, backfilling for structures, vertical walls, and widening of embankments. The overall construction period can be shortened as ground treatment and temporary works are simplified. Additionally, it offers numerous benefits, including a reduction in overall construction costs, including maintenance after completion. 【Features】 ■ Ultra-lightweight and wide applicability - Unit volume weight is 0.12 to 0.35 kN/m3 - When applied as fill on soft ground, it can significantly reduce load and solve issues such as settlement and insufficient bearing capacity of the soft ground. *For more details, please refer to the PDF document or feel free to contact us.

• Road construction

The "M1 Wall" is a large block made of panel assembly that can be planned with minimal embedment by adjusting the height of the bottom panel to match the longitudinal slope. There is no need for site-cast adjustment concrete for curves and bends. Due to the lightweight components, large heavy machinery is not required. Additionally, by utilizing vertical reinforcing bars, handrails can be installed in advance. 【Features】 ■ Economical planning suitable for the site ■ Free selection of retaining wall counter lengths and wall surface slopes ■ High adaptability for disaster recovery ■ Quick response possible as there are no custom products ■ Easy and safe construction ■ Applicable for road and river restoration *For more details, please refer to the PDF materials or feel free to contact us.

• Aggregates and crushed stone
• Dam construction
• Retaining wall

The Tail Arm Method is a construction technique that allows for the vertical and high construction of embankments. By laying ribbed strips (strip-shaped steel reinforcement) within the embankment and covering the surface with concrete skin (modular wall panels), it enables the creation of vertical and high retaining walls. (⇒ For more details, please download and view the catalog.)

• Reinforcement and repair materials

The NSS block is a large block retaining wall made of reinforced concrete that is integrated between blocks (in accordance with road earthworks guidelines). Instead of the conventional concrete used in the core section, crushed stone will be used. By adopting a reinforced structure in accordance with the road earthworks guidelines, the NSS block allows for a reduction in concrete volume and cost compared to traditional gravity retaining walls.

• Aggregates and crushed stone
• Dam construction
• Retaining wall

The high-strength micropile method involves leaving a high-strength steel pipe, called casing, in the ground as a pile after drilling a hole into the ground. This method is used to support the foundations of bridges and buildings, as well as to reinforce natural slopes and prevent landslides or ground collapses.

• Earthworks
• Piles, caissons, sheet piles
• Pile and foundation work

The Super Dugshim method, like the EP route pile method, is a reinforcement technique designed to prevent natural slopes and ground from collapsing. In the route pile method, a hole is first drilled into the ground using a steel pipe, and then filled with a rebar core and mortar; however, in the Dugshim method, all of these tasks can be performed simultaneously.

• Earthworks
• Piles, caissons, sheet piles
• Pile and foundation work

The EP root pile method is a reinforcement technique developed in Italy to prevent natural slopes and ground from collapsing. "Root pile" refers to tree roots, and it involves inserting numerous mortar piles, approximately 10 cm in diameter and reinforced with rebar, into the ground like tree roots to integrate the soil.

• Earthworks
• Pile and foundation work

The Texpan method is a two-part precast arch culvert construction technique developed in France. By alternately combining reinforced concrete arch components, it creates a space that can be used as an alternative to culverts and bridges by placing fill on top. Since it involves the assembly of precast components, the construction is simple and quick. Additionally, due to the two-part arch structure and unique connection method, it can be applied to culverts with high earth cover and large internal spaces, even with thin concrete components.

• Dam construction
• Airport facilities
• Special Construction Method

The greening tail arm method, as its name suggests, is designed to allow for the greening of the surface of tail arm embankments. The basic principle of the method is the same as that of the tail arm method, but instead of using heavy concrete skins, it employs mesh panels and vegetation mats, making it even easier to construct. The greened embankment surface harmonizes with the surrounding environment in suburban and mountainous areas.

• Reinforcement and repair materials
• Earthworks

The Tail Arm Method, which has accumulated a wealth of experience over 25 years in a wide range of applications, demonstrates numerous excellent advantages as a Tail Arm retaining wall in land development.

• Retaining wall

The Super Tail Arm Method is a next-generation tail arm construction method developed to reduce construction costs, improve workability, and enhance aesthetics in urban areas.

• Earthworks
• Pile and foundation work

The TerraArmée method, invented in France 40 years ago, is a technique that allows for the vertical and high construction of embankments. By laying ribbed strips (band-shaped steel reinforcement) within the embankment and covering the surface with concrete skin (modular wall panels), it enables the creation of vertical and high retaining walls. This method is referred to as reinforced earth because it reinforces the soil with strips, and its principles have become the foundation for many existing techniques. Backed by years of know-how and reliability, the TerraArmée method is the most proven technique both globally and in Japan.

• Retaining wall

Hirose's long-cultivated know-how regarding soil has contributed significantly to the safety, economic efficiency, and aesthetic quality of civil engineering structures, from urban civil works to large-scale projects in suburban areas, enhancing social infrastructure. We will continue to propose suitable construction methods while considering harmony with the natural terrain, geology, and surrounding environment.

• Earthworks
• Pile and foundation work