List of Civil Engineering Materials products
- classification:Civil Engineering Materials
1846~1890 item / All 9500 items
The assembly instructions are simple and easy! It also has water stop performance equivalent to IS standard Ws=6, so there is no worry about water leaks.
- Water stop
Check in advance! Flood damage can be minimized by taking precautions beforehand.
- Water stop
Flood prevention measures using stop boards, portable batteries, and water-absorbent bags! Explained clearly with illustrations. With these flood prevention measures, you can feel secure!
- Water stop
Installation completed with a small number of people! Incredible water-stopping power with two locks! It can be stored on the wall during normal times, so it doesn't get in the way!
- Water stop
If you experience flooding damage... here are six key points to remember! Kyokujitsu Construction, which handles flood barriers and waterproof boards, will explain in detail!
- Water stop
- Other commercial buildings and service facilities
- Waterproofing work
Flood prevention measures for vents and grilles! Automatically closes during flooding and can also be opened and closed manually!
- Water stop
- Other commercial buildings and service facilities
- Waterproofing work
"Regret comes too late." When muddy water enters the building and expensive machinery breaks, it leads to significant damage! If you are concerned about flooding, please feel free to consult with us f...
- Water stop
- Other commercial buildings and service facilities
- Waterproofing work
Intense rainfall has increased by 1.4 times in the past 30 years! Introduction to flood barriers and flood prevention measures. *Materials available.
- Water stop
Severe damage such as the elevator being out of service! Introducing flood prevention measures.
- Water stop
As a result, there is a risk of flooding in the building! Introducing two heavy rain events.
- Water stop
In the long term, there is a trend of increase! Please feel free to consult us about measures such as water stop boards and automatic waterproof grilles.
- Water stop
Long-term storage is possible! Our Aqua Boy is recommended as an emergency supply for stockpiling.
- Water stop
Disaster prevention specialists explain flood prevention measures applicable to various scenes such as factories, hospitals, nursing facilities, apartments, and single-family homes in an easy-to-under...
- Water stop
Demonstrates excellent high mobility! Easy management and high cost-effectiveness.
- Water stop
Maximum dam height 1m! Protect your assets from water damage caused by sudden heavy rain and typhoons.
- Water stop
Efforts are underway to eliminate leftover concrete and returned concrete generated at construction sites using ultra-fine bubbles (nano bubbles).
- Piping materials (concrete pipes)
Introducing a ground improvement additive made from glass powder!
- Ground improvement materials
A new adoption has been decided for the steel deck slabs of the metropolitan expressway! It contributes to excellent water resistance and improved durability as a pioneering product.
- Bridge Materials
Lightweight and made of super soil with excellent drainage and breathability, making work easy! Increased yield!
- Soil improvement material
The Glass Foam Material Business Cooperative is an organization aimed at supporting the promotion activities of "Super Sol."
- Soil improvement material

Kozawa Construction Co., Ltd.'s 'Super Sol' has been certified as a 'Kochi Prefecture Recycled Product'.
In March 2022, the newly established Kochi Prefecture Ino Town company, Kinzawa Construction Co., Ltd., had its glass bottle recycling material Super Sol certified under the "Kochi Prefecture Recycling Products Certification System," which has been implemented by Kochi Prefecture since fiscal year 2004. In Kochi Prefecture, the government certifies excellent "recycling products" manufactured and processed within the prefecture using recycled resources such as waste, as well as "environmentally friendly businesses" that have achieved outstanding results through environmentally conscious initiatives, and "eco shops" recognized for contributing to the formation of a circular society in the region.
Renewed from RCF root prevention sheet! It is possible to cultivate healthy trees without including chemical substances and to sustain root and rhizome suppression effects over the long term.
- Landscaping materials
It is effective for a long time even on plants with strong penetration power. Since it does not use any chemicals, it is gentle on the soil and has excellent permeability, providing outstanding draina...
- Landscaping materials
Our company has a 100% material recycling rate, and our domestic circulation ratio is 90.4% for the fiscal year 2023.
- Safety and consumables
- Bead method polystyrene foam
- Lightweight embankment material
Can seal large gaps! Pressure management allows for adjustment of sealing surface pressure.
- Tunnel Materials
Elastic joint material that does not require mixing work during construction due to its liquid nature.
- Joint material
Stable seed germination Optimal for dry soil
- Civil Engineering Sheet
■■Achieving long-term greening■■Optimal for slopes with low soil nutrients■■
- Civil Engineering Sheet
■■Market unit price products with straw■■Prevention of straw scattering■■
- Civil Engineering Sheet
High-spec market price products with excellent workability.
- Civil Engineering Sheet
Standard vegetation sheet for Longtai: Ideal for soils prone to surface erosion.
- Civil Engineering Sheet
■■Long-selling product■■Striated greening■■
- Civil Engineering Sheet
Utilizing the various effects of straw to create a favorable environment for greening plants.
- Slope protection material
■■Environmental Products■■Using biodegradable materials■■
- Civil Engineering Sheet
■■Easy installation with a legal framework size■■Equivalent effect to vegetation substrate spraying work■■
- Civil Engineering Sheet
■■Wara catches airborne seeds■■Seedless vegetation mat■■
- Civil Engineering Sheet
■■Wara Grass Construction■■ Affordable and High-Performance Straw Turf■■
- Soil improvement material
◇Active in disaster recovery sites◇For early greening◇
- Civil Engineering Sheet

What does "returning to nature" greening aimed at by Rontai mean?
Hello everyone, nice to meet you. My name is Sekiguchi from the Osaka branch. Without further ado, at Rontai, we value "early greening." One reason for this is "disaster prevention." By using fast-growing non-native grasses, we achieve early greening and prevent erosion of slopes. Next is the creation of an "environment" that allows the original plants to return easily. While preventing slope erosion, we also create a suitable environment for plant growth. This is a photo taken two years after the construction of the RONKET DX3 type during disaster recovery work. This is not a photo showing failure in greening. If you look closely at the slope, you can see young trees like camphor trees growing vigorously. The vegetation is transitioning from the non-native grasses introduced for early greening to local trees. Early greening is also contributing to the creation of an environment that "returns to nature" from a long-term perspective. The progress from the completion of construction to early greening is posted on our company website, so please take a look there as well.
Kilket has been registered in Hiroshima Prefecture's "Innovative Technology Utilization System" in the construction sector! [Rontai Co., Ltd.]
- Slope protection material
Greening soft rock slopes with natural materials! No need for large machinery transportation and installation, leading to shortened construction time and cost reduction.
- Slope protection material
■■Capable of handling various spraying sites■■Market unit price method■■
- Other park materials
■■Spray Application Net■■Market Unit Price Product■■
- Slope protection material
◆◆Erosion prevention using water-absorbent bags◆◆ Effective for easily dry soil◆◆
- Soil improvement material
◆◆Biodegradable Products◆◆ Straw Dispersion Prevention ◆◆
- Soil improvement material
◆◆Market Price Product◆◆ Ideal for Dry Soil ◆◆
- Soil improvement material