List of Civil Engineering Materials products

It can be quickly implemented in existing facilities such as outdoor areas and lockers where securing power is difficult. Rental options help reduce the costs of implementation and operation.

• Attendance management system

Direct 1-to-1 outbound support that reaches the DX departments of major corporations!

• Other Software

By shortening construction time, emissions from traffic congestion can also be reduced!

• Bridge Materials

A separation structure consisting of three components! It produces minimal noise during operation, allowing for a comfortable ride.

• Bridge Materials

We can accommodate both pre-installed and post-installed methods for various types of bridges, including RC bridges, PC bridges, and steel bridges!

• Bridge Materials

It can be repaired in a short time, which also helps reduce economic losses due to traffic congestion!

• Bridge Materials

By shortening construction time, the generation of exhaust gases due to traffic congestion can also be reduced!

• Bridge Materials

It is a joint installed parallel to the bridge axis (the direction of vehicle travel)!

• Bridge Materials

We can accommodate both pre-installed and post-installed methods for various types of bridges such as RC bridges, PC bridges, and steel bridges!

• Bridge Materials

The surface rubber, receiving plate, and receiving base have a separated structure, so wear of the surface rubber does not expose the steel plate that causes slipping, allowing for safe operation!

• Bridge Materials

It can be repaired in a short time, which also helps reduce economic losses due to traffic congestion!

• Bridge Materials

In repairs that do not require chipping, you can prolong the lifespan of the bridge without damaging the deck and reduce maintenance costs!

• Bridge Materials

It can be repaired in a short time, which also helps reduce economic losses due to traffic congestion!

• Bridge Materials

The surface rubber, receiving plate, and receiving base have a separated structure, so wear of the surface rubber does not expose the steel plate that causes slipping, allowing for safe operation!

• Bridge Materials

We can accommodate both pre-installed and post-installed methods for various types of bridges, including RC bridges, PC bridges, and steel bridges!

• Bridge Materials

In repairs that do not require chipping, you can prolong the lifespan of the bridge without damaging the deck and reduce maintenance costs!

• Bridge Materials

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

Flexible piping power! It excels in flexibility and can be bent freely without the need for special tools! We have added quick-connect fittings.

• Piping materials (plastic pipes)

This was used for the seismic reinforcement work on the main girders of bridges in Kanagawa Prefecture on the Tomei Expressway.

• Bridge Materials

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

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

The mechanism of visible shadows! Introducing concrete blocks with slits for paving.

• Concrete block, ALC panel, extrusion molded cement board construction
• Exterior and paving materials <General>
• Paving Materials

A new structure that strengthens interlocking block paving, achieving both longevity and flatness.

• Concrete block, ALC panel, extrusion molded cement board construction
• Exterior and paving materials <General>
• Paving Materials

The next standard that is long, beautiful, and chosen.

• Concrete block, ALC panel, extrusion molded cement board construction
• Exterior and paving materials <General>
• Paving Materials

The gentle-feeling transparent plate promises a reassuring walking experience! A wide variety of colors available!

• Various blocks
• Concrete block, ALC panel, extrusion molded cement board construction

A block with a natural color and texture using natural stone on the surface! Choose your environmental performance!

• Various blocks
• Concrete block, ALC panel, extrusion molded cement board construction

High quality! Eco-friendly products with a variety of colors created from incinerated waste ash.

• Various blocks
• Concrete block, ALC panel, extrusion molded cement board construction

Excellent permeability and reduces water splashing! Ideal permeable blocks for parks, squares, and streets with abundant greenery.

• Various blocks
• Concrete block, ALC panel, extrusion molded cement board construction

A block with a texture like natural stone, enhanced with high safety for permeability and drainage effects!

• Various blocks
• Concrete block, ALC panel, extrusion molded cement board construction

An environmentally harmonious pavement that combines the color and permeability of natural stone! It also helps prevent urban flooding.

• Various blocks
• Concrete block, ALC panel, extrusion molded cement board construction

Using highly reflective aggregates on the surface! Suppresses heat retention and alleviates the heat island phenomenon.

• Various blocks
• Concrete block, ALC panel, extrusion molded cement board construction

A rich variety of 14 colors that can beautifully arrange urban spaces!

• Various blocks
• Concrete block, ALC panel, extrusion molded cement board construction

An elegant expression with a sense of heaviness creates an urban space! Achieving a walkable environment!

• Various blocks
• Concrete block, ALC panel, extrusion molded cement board construction

Classical details reminiscent of Southern European streets! Timeless natural materials!

• Various blocks
• Concrete block, ALC panel, extrusion molded cement board construction

Two types of guidance blocks provide comfortable and safe walking for everyone!

• Various blocks
• Concrete block, ALC panel, extrusion molded cement board construction

Prevent the occurrence of step differences and misalignments for a long time, maintaining a safe, comfortable, and beautiful pavement surface.

• Tensioning and connecting blocks
• Various blocks

Soil-like water retention contributes to alleviating the heat island phenomenon! It also helps prevent urban flooding.

• Various blocks
• Concrete block, ALC panel, extrusion molded cement board construction

A vegetation block with a greening rate of 61% that adds greenery to the streets and creates a lush landscape!

• Various blocks
• Concrete block, ALC panel, extrusion molded cement board construction

原材料由来のCO2排出量約40％減。高い流動性と優れた強度発現性も両立

• 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

A groundbreaking product that changed the common understanding of steam traps, contributing to CO₂ reduction by reducing steam usage: Columnar Hole Type [Steam Saver].

• Piping materials (copper pipes, cast iron pipes)

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

Traffic can be opened within a day! The curing time until traffic opening is approximately 24 hours.

• Paving Materials
• cement

CO2 emissions during manufacturing have been reduced by approximately 40% compared to conventional methods! This is a low-carbon type of injection material.

• Paving Materials
• cement

Exhibiting a high water absorption rate of about 80%! This product has a significant effect on suppressing surface temperature and is also excellent in durability.

• Paving Materials
• cement