List of General civil engineering materials products

You won't have time to evacuate from the earthquake to the tsunami's arrival! This is a "tsunami shelter" that dramatically increases survival rates against the tsunami approaching at a tremendous spe...

• Basement unit/disaster prevention shelter

Since the construction-generated soil will be recycled on-site, the disposal costs for leftover soil and the costs for new purchases will be significantly reduced. 【Disaster Prevention】

• Special Construction Method

Helpful for disaster recovery work! It is possible to shorten the construction period!

• Concrete Retaining Wall
• Concrete wall
• Stacking blocks

A product that conserves water, nourishes the earth, and protects greenery with consideration for the environment!

• Bentonite

Introducing the Hamatait series, based on years of comprehensive rubber technology and considerate of the environment!

• Joint material

The "labor-saving cage method" allows for easy and speedy construction using crushed stone as backfill material. [Crushed stone can be used]

• Baskets and futon baskets
• Slope protection material
• Embankment

At Rontai, we handle three types of domestically produced seeds: Japanese pampas grass, power grass, and mugwort!

• Slope protection material

We offer a wide variety of native grasses, woody plants, and non-native grasses (tall and short)!

• Slope protection material

This is a list showing the seeds included in greening materials such as vegetation sheets, vegetation mats, and vegetation soil bags!

• Slope protection material

Water-curing solidified joint sand that balances workability and aesthetics.

• Joint material
• Concrete block, ALC panel, extrusion molded cement board construction
• Paving Materials

Slope protection works specialized for alkaline soil, such as embankments and tunnel spoil using cement-based solidifying materials (for ponds, retention basins, road improvements, and riverbank prote...

• Slope protection material
• Baskets and futon baskets
• Civil Engineering Method

No water leaks at all! The panel shape is strong not only against water stoppage but also against impacts from floating debris and other objects.

• Water stop

The functions are different! It protects various assets from flooding caused by typhoons and heavy rain.

• Water stop

Numerous achievements in solar power generation sites. Significant erosion prevention effect.

• Slope protection material

High quality × low price × same-day delivery. Our in-house manufactured products can be shipped from our domestic warehouse on the same day.

• Pest and insect control products
• Slope protection material
• Exterior Materials

Case Study: [New Product] Weed Control for Sidewalk Joints Using NEO Sealing

• Civil Engineering Sheet

■■Maximum erosion prevention effect of embankment products■■Prevention of sediment runoff into rivers and other bodies of water■■

• Civil Engineering Sheet

Exhibiting the advantages of lightweight in soft ground! Significantly improving retaining wall and earth support construction through independence.

• Lightweight embankment material

A new construction method using unique reinforcement materials! It allows for shorter lengths of reinforcement materials.

• Reinforced earth wall

Structural stability and excellent design utilized in various scenes! Responding to the needs of embankment construction sites.

• Reinforced earth wall

Reliable quality that combines strength and flexibility! Solving various problems associated with embankments, subgrades, and weak ground.

• Lightweight embankment material
• Ground improvement materials

A new foundation for Japan. A leader in valuable infrastructure development and creativity.

• Road construction
• Slope protection material
• River construction

Lightweight and compact, making transportation and storage easy! Effective for disaster recovery and in remote mountain sites.

• Reinforced earth wall

It is widely used in general embankments, retaining walls, coastal areas, reservoir banks, and bridge abutments!

• Bridge Construction
• Reinforced earth wall

Lightweight enough to be held with one hand (10kg/5m²), and no special vehicles or tools are needed! Just hammer in the dedicated nails! Anyone can do it.

• Gutters and U-shaped gutters
• Slope protection material
• Renovation and repair methods

We will lend you a demo product for those who can't understand without seeing the actual item!

• Water stop
• Other office supplies
• Rain protection items

By shortening response times during disasters, we will reduce on-site downtime!

• Water stop
• Other office supplies
• Rain protection items

It can be used for leak prevention and extinguishing EV car fires by enclosing it inward.

• Rain protection items
• Other office supplies
• Water stop

The LOTUS Z delivered in the 1990s has been operating continuously for nearly 30 years. Z Engineering recommends regular inspections.

• Drainage material
• others

The trump card for decarbonization! A continuous emission type with no moving parts, made entirely of stainless steel!

• Drainage material
• others

Adopted for the purpose of protecting granite soil slopes, which are easily erosed. A case of protecting the slopes around the sediment control dam.

• Erosion control works
• Slope protection material
• Civil Engineering Method

It is a grout suitable for ground reinforcement, void filling, and water stopping that requires permanent strength.

• cement
• Waterproofing Agent

It has good transparency and does not damage the landscape, with a proven track record in many cultural properties! Made of polyester, it does not rust due to corrosion and does not harm cultural prop...

• Slope protection material

Many products are listed in "Construction Prices," which is used for estimating public works projects!

• Civil Engineering Sheet

A water-stopping door that achieves the same operability and low cost as a standard steel door.

• Water stop

High-type specification of the water stop board "Rakusset."

• Water stop

No construction required, water stop board exclusively for steel doors.

• Water stop

The easy-to-install water stop board "Rakusetto" that can be set up effortlessly by one person.

• Water stop

Reduce water intrusion caused by sudden flooding from guerrilla rainstorms! A simple water-blocking sheet with ten times the water-stopping performance of sandbags.

• Water stop

It is a buoyancy-type water stop board that automatically stands up using only the buoyancy of water.

• Water stop
• Other fittings

Installation completed in 10 seconds. A water stop board with excellent design originating from Italy. It achieves a high water stop effect equivalent to JIS leakage grade Ws-6.

• shutter
• Water stop
• Waterproof tape, adhesive, drain, protective panel

We propose an alternative method for slope protection at the backfill area next to the sediment control dam!

• Slope protection material
• Erosion control works

We propose an alternative method for slope protection at the backfill area next to the sediment control dam!

• Slope protection material