三和グランド List of Products and Services

"13 Specific Measures Against Climate Change" [Conservation of Natural Environment] We will provide products that are friendly to disaster reduction and the precious local resources of "water and greenery." [Permeability and Water Retention] By allowing rainwater to "permeate and return" to the ground, we promote the stabilization of groundwater sources and the growth of vegetation. Stored water helps mitigate the heat island effect. "12 Responsibility to Create and Use" [Reduction of Environmental Impact] We will use recycled materials to provide durable products. [Environmental Quality] Blast furnace crushed slag is a specified procurement item under green procurement methods. [Durability] Many projects maintain paving functionality even after more than 15 years. "11 Building Sustainable Communities" [User-Friendly] We will provide a safe, secure, and comfortable environment for children, the elderly, and people with disabilities. [Universal Design] High flatness ensures barrier-free access, creating a comfortable walking environment for everyone. [Safety] Safe and secure paving materials made from "harmless" blast furnace crushed slag. ■ Case Studies Osaka Castle Park (Construction in 2023) Dejima Dutch Trading Post Ruins (Construction in 2022) Aoyama Cemetery (Construction in 2021) *For more details, please contact us.

• Paving Materials
• Exterior and paving materials <General>
• Paving of sidewalks, roads, parking lots and stadiums

In the newly developed extension of Wadahori Park, located in Suginami Ward, Tokyo, permeable pavement and water-retaining colored sand materials have been adopted. A few years ago, we completed a project in another area of the same park, and we believe that this has been recognized positively.

• Exterior and paving materials <General>
• Paving Materials

At Funado Park in Sakai City, Osaka Prefecture, permeable pavement and water-retaining pavement material colored sand have been adopted in two phases. It is being used on the outer circular path, and one of the features of the permeable pavement and water-retaining pavement material colored sand, its excellent permeability that reduces the formation of puddles, seems to be well-received.

• Exterior and paving materials <General>
• Paving Materials

At the Fukazawa Komorebi Green Space in Setagaya, Tokyo, permeable and water-retaining colored sand pavement materials have been adopted. This pavement blends seamlessly into the lush landscape and has minimal impact on the growth of surrounding plants.

• Exterior and paving materials <General>
• Paving Materials

In the Wadahori Greenway located in Nerima Ward, Tokyo, permeable pavement and water-retaining colored sand have been adopted. Previously, it was a dark-looking greenway, but during the complete renewal, it has transformed into a bright and easy-to-walk path.

• Exterior and paving materials <General>
• Paving Materials

We have adopted permeable paving and water-retaining paving material colored sand in the planting box located on the sidewalk facing the public school in Shinagawa Ward. Initially, we planned to use joint material, but due to the tree roots, we could not achieve the required thickness, so we switched to cutter joints. The ability to respond flexibly is the strength of Sanwa Grand's permeable and water-retaining paving materials.

• Exterior and paving materials <General>
• Paving Materials

In Chiba City, Chiba Prefecture, near Mitsuwadai Station on the Chiba Urban Monorail, we have adopted permeable pavement and water-retaining pavement material colored sand on the pedestrian-only road, City Road Mitsuwadai No. 59. As it has been over 20 years since the installation, there have been repairs in some areas, but the majority of the permeable pavement and water-retaining pavement material colored sand has been used as is since that time. *Photographed in April 2023.

• Exterior and paving materials <General>
• Paving Materials

In the expansion area of Tokyo Metropolitan Rokusen Park located in Higashikurume City, we have adopted permeable pavement and water-retaining pavement material in color sand. The sand beige color of the planted flowers and the permeable and water-retaining pavement material creates a soft, earthy atmosphere that complements each other well.

• Exterior and paving materials <General>
• Paving Materials

In the renovated "Flower Road" area of the Osaka Prefectural Neyagawa Park located in Neyagawa City, Osaka Prefecture, permeable pavement and water-retaining colored sand have been adopted. There are health playground equipment surrounding the permeable pavement and water-retaining colored sand, and it seems to be very lively during holidays.

• Exterior and paving materials <General>
• Paving Materials

In the pedestrian walkway within the residential complex near JR Yokohama Line's Hachioji Minamino Station, developed as Hachioji New Town, permeable and water-retaining colored sand paving materials were adopted in 1997. Although more than a quarter of a century has passed since the construction, there is hardly any significant damage, and the condition is very good. This truly demonstrates one of the characteristics of permeable and water-retaining colored sand paving materials: their long lifespan. *Photographed in May 2023.

• Exterior and paving materials <General>
• Paving Materials

We have adopted permeable pavement and water-retaining pavement material colored sand for the exterior of the mixed-use building "D Tower Toyosu," located directly across from Toyosu Market, which houses hotels and training facilities. The calm color tones blend well with the surrounding greenery, creating a very pleasant atmosphere.

• Exterior and paving materials <General>
• Paving Materials

We have adopted permeable and water-retaining colored sand paving materials for the walking paths in the plum grove of Osaka Castle Park, located at the foot of Osaka Castle, a symbol of Osaka, and a place of relaxation for the citizens. It seems that many people have walked on the permeable and water-retaining colored sand, enjoying the plums, and we have received positive feedback about it.

• Exterior and paving materials <General>
• Paving Materials

One of the three burial mound groups in Moroyama Town, Saitama Prefecture, is the Nishito Burial Mound Group, where we have adopted permeable pavement and water-retaining pavement material colored sand. A quarter of a century has passed since the construction, but there has been no significant damage, and it is still being used as an active pavement.

• Exterior and paving materials <General>
• Paving Materials

The ancient temple Daianji in Nara, famous for its cancer prevention, has adopted permeable pavement and water-retaining colored sand. Although it has just been installed and walking on the permeable pavement and water-retaining colored sand is not yet possible, it seems that visitors have been commenting on how beautiful it has become.

• Exterior and paving materials <General>
• Paving Materials

The permeable and water-retaining colored sand paving materials have been adopted at the Kawaguchi City Green Center located in Kawaguchi City, Saitama Prefecture. They are used in the northern area, which was newly opened last spring, including the Insect Forest, Adventure Forest, and Lively Square.

• Exterior and paving materials <General>
• Paving Materials

It extends from far-off Tottori Prefecture to Kyoto Prefecture, and we have adopted permeable pavement and water-retaining pavement material colored sand in the San'in Kaigan Geopark, which is also registered as a UNESCO Global Geopark. The color harmony with the sandy beach is remarkable.

• Exterior and paving materials <General>
• Paving Materials

At Toyo Park, located at the foot of Nagahama Castle, a representative tourist destination and symbol of Nagahama City in Shiga Prefecture, permeable pavement and water-retaining colored sand materials have been adopted. We have heard that the park users have given positive feedback, which is very encouraging for us.

• Exterior and paving materials <General>
• Paving Materials

We have adopted permeable and water-retaining colored sand pavement materials for the paths in Hiroshima's Peace Memorial Park. There are many travelers from abroad, and pedestrians and cyclists are constantly present. It is located close to the city center of Hiroshima and is also a famous cherry blossom viewing spot, so we feel very honored to have our materials used in such a representative park of Hiroshima.

• Exterior and paving materials <General>
• Paving Materials

In Minato Ward, Tokyo, right next to Tokyo Midtown, we have adopted permeable pavement and water-retaining colored sand materials in the sloped area of Hinokicho Park. Since it has been about 12 years since the installation, there are some areas with cracks, but the walkability has been maintained. In urban parks, natural colors that evoke an urban image are often used, and this location has also chosen those colors.

• Exterior and paving materials <General>
• Paving Materials

At the newly established Fukaya Terrace Park, located very close to Fukaya Hanazono Station in Fukaya City, Saitama Prefecture, permeable pavement and water-retaining colored sand have been adopted. This new park opened simultaneously with an adjacent agricultural experience facility. The sand beige color, which is reminiscent of soil, matches the concept of the facility and looks appealing. An outlet mall is set to open in October across the road, making this area one that will attract even more attention in the future.

• Exterior and paving materials <General>
• Paving Materials

Permeable paving material colored sand has been adopted at Haneda Innovation City. The newly constructed buildings, green lawns, and natural-colored sand match well, creating a very calm atmosphere. It is being used in the pathway area of the Artist Village Zone, and it is expected to become lively in the future, allowing many people to walk through.

• Exterior and paving materials <General>
• Paving Materials

At the 2022 National Urban Greenery Fair "Kumamoto Flower and Greenery Expo," the Japanese garden at the Kumamoto City Zoological and Botanical Gardens, one of the venues, adopted permeable and water-retaining paving material colored sand. It has been paved in a way that maintains the "Japanese" atmosphere while also being easy to walk on.

• Exterior and paving materials <General>
• Paving Materials

We have been adopted for the riverside promenade of the Kamo River, a representative river in the ancient capital of Kyoto and a famous tourist spot. After the completion of this project, we received direct feedback from local residents saying, "We really like it." This was not only a great encouragement for us but also a moment when we felt we were able to contribute to the local community.

• Exterior and paving materials <General>
• Paving Materials

At the Isezaki Citizens' Forest Park, a representative park in Isezaki City, Gunma Prefecture, permeable and water-retaining colored sand pavement materials were adopted in 2000. More than 20 years have passed since the installation, and there have been no significant damages that would prevent walking, and it is still actively used as a pathway, demonstrating one of the features of colored sand: its durability. *Photographed: May 2021

• Exterior and paving materials <General>
• Paving Materials

We have adopted permeable paving material colored sand for the pathway of the newly established campsite next to JR Agatsuma Line's Kawaharayu Onsen Station. Camping and barbecuing in the great outdoors must be very pleasant. In this context, we are making a modest contribution by providing easy-to-walk garden paths.

• Exterior and paving materials <General>
• Paving Materials

A historic cemetery established in the 7th year of the Meiji era, Tokyo Aoyama Cemetery. In this cemetery, we have adopted permeable and water-retaining colored sand pavement materials for the newly developed plaza path facing Higashi San-dori. While it presents a different image from the traditional Aoyama Cemetery, the natural colors create an urban atmosphere. Thanks to the permeable and water-retaining pavement, puddles are less likely to form even on rainy days, making it a more accessible area compared to the traditional cemeteries and graveyards.

• Exterior and paving materials <General>
• Paving Materials

■Environmental Conservation ... We will provide products that are friendly to the precious local resources of "water" and "greenery," contributing to disaster reduction. - Permeability - Water retention ■Reduction of Environmental Impact We will offer products made from recycled materials and those that can be used for a long time. - Environmental friendliness - Durability ■User-Friendly ... We will create safe, secure, and comfortable spaces for children, the elderly, and people with disabilities. - Universal design - Safety For more details, please see the link below.

• Paving Materials
• Exterior and paving materials <General>
• Paving of sidewalks, roads, parking lots and stadiums

The initiatives for green infrastructure have been recognized in the park shown in the photo. The permeable and water-retaining paving material 'Color Sand' utilizes 'blast furnace crushed slag,' an aggregate with a fine porous structure, achieving high permeability and water retention. Depending on environmental conditions, its durability is approximately 15 to 20 years. It has a texture similar to soil, making it easy to blend into natural landscapes as 'slag pavement.' Choosing a gray tone can match urban landscapes as well. It allows rainwater to permeate and return to the ground, alleviating the 'heat island phenomenon' in urban areas. It is designed to minimize puddles and has a high slip resistance, making it easy to walk on during and after rainfall. **Features** - Excellent functionality (permeability, water retention, freeze resistance, durability, slip resistance) - Uses aggregates specified for procurement under the Green Purchasing Law, with a recycling rate of over 80% - Meets the 'road surface requirements' needed for sidewalks and bicycle paths - Over 1,800 instances of adoption in 'public works' ordered by municipalities nationwide - Perfect for the recently highlighted initiatives of 'green infrastructure' (permeability and water retention) ★ Currently, we are offering a 'collection of adoption examples' for parks and building exteriors. You can view it immediately via [PDF download].

• Paving Materials
• Exterior and paving materials <General>
• Paving of sidewalks, roads, parking lots and stadiums

In 1997, shortly after the establishment of Sanwa Grand Co., Ltd., our colored sand was adopted at "Akebono Children's Forest Park" in Hannō City, Saitama Prefecture. This park won the Minister of Land, Infrastructure, Transport and Tourism Award at the 14th Urban Park Competition. Since then, it has been introduced to many people as a representative example of our adopted sites. About 20 years later, during the renewal, permeable and water-retaining colored sand was once again chosen for the park path paving. 【Features】 ■ Excellent permeability, water retention, and freeze resistance ■ Over 80% recycling rate due to the use of aggregates specified in the Green Purchasing Law ■ Meets the "surface requirements" needed for sidewalks and bicycle paths ■ Over 1,500 adoptions in "public works" ordered by municipalities nationwide *For more details, please refer to the PDF materials or feel free to contact us.

• Paving Materials
• Exterior and paving materials <General>
• Paving of sidewalks, roads, parking lots and stadiums

The permeable and water-retaining paving material "Color Sand" is a permeable high furnace slag paving material characterized by its high weed prevention effect, permeability, and water retention. By laying it in paths such as those in cemeteries, maintenance management is simplified, allowing for a reduction in management costs. 【Do you have any of these concerns?】 ■ In spring to autumn, weeds grow and it's a hassle... ■ In autumn, cleaning up fallen leaves is a hassle... ■ I don't live near the grave, so I can't take care of it... ⇒ We can solve these concerns! *For more details, please download the PDF or feel free to contact us.

• Paving Materials
• Exterior and paving materials <General>
• Paving of sidewalks, roads, parking lots and stadiums

A new paving material that combines single-sized crushed stone and porous-shaped blast furnace water-quenched slag, possessing robustness, durability, water retention, and permeability. The interlocking of aggregates with different particle sizes achieves a bending strength of 40 kgf/cm². The "latent hydraulicity" of the blast furnace water-quenched slag provides excellent long-term strength (durability). 【Features】 ■ Bending strength exceeds 40 kgf/cm², achieving an exceptionally high value among pedestrian paving materials. ■ High durability is exhibited due to the interlocking of aggregates and the "latent hydraulicity" of the blast furnace water-quenched slag. ■ At a thickness of 7 cm, it stores approximately 16 liters of water per square meter! ■ Quickly permeates rainwater, making it difficult for puddles to form, allowing for comfortable walking even during and after rain. ■ Mitigates the heat island effect. ■ Enriches groundwater and stimulates plant growth. ■ The fine surface texture makes it slip-resistant when wet, providing easy walking. <Examples of Use> Building exteriors (terraces) / Residential exteriors / Schools / Parking lots / Commercial facilities Urban parks / Housing exhibitions / Parking areas and roadside stations / Event spaces, etc. *For more details, please contact us or download the PDF.

• Paving Materials
• Exterior and paving materials <General>
• Paving of sidewalks, roads, parking lots and stadiums

We will explain the reasons why the "permeable and water-retaining blast furnace slag pavement (color sand)" has maintained its paving functionality even after more than 15 years since installation. Color sand meets all five "pavement requirements" expected for pedestrian areas and maintains high performance among pedestrian pavements. The characteristic of the blast furnace water-quenched slag used as aggregate, "latent hydraulicity," not only enhances strength but also provides excellent permeability and water retention due to its porous structure. Furthermore, in response to the repeated action of freezing and thawing during winter, it prevents the deterioration of the pavement surface by relieving the pressure caused by the volume expansion of moisture during freezing. Additional explanations, such as "representative examples of sites that have maintained paving functionality for over 15 years," can be found through external links. 【Technical Information Introduction】 ■ 20 years since the development of color sand ■ High performance maintained as pedestrian pavement ■ Technical reasons for maintaining paving functionality after more than 15 years / representative examples of sites *For more details, please refer to the PDF materials or external link pages, or feel free to contact us.

• Paving Materials
• Exterior and paving materials <General>
• Paving of sidewalks, roads, parking lots and stadiums

This explains the characteristics and benefits of the blast furnace crushed slag used in "permeable blast furnace slag pavement (colored sand)." The "blast furnace crushed slag" used as aggregate in our paving materials is a byproduct generated simultaneously when producing pig iron from a blast furnace at major steel manufacturers. It can be easily separated as it floats on top of the molten pig iron. In addition to contributing to the reduction of environmental impact, it has characteristics such as excellent gradation balance due to its uniform particle size. Further explanations on topics such as "What is steel slag?" and "Characteristics and general applications of blast furnace slag" can be found through external links. 【Introduction of Technical Information】 ■ What is "steel slag"? ■ Characteristics and general applications of "blast furnace slag" ■ Reasons for adopting "blast furnace crushed slag" - Reduction of environmental impact, porous shape, latent hydraulicity, high internal friction angle, uniform particle size, safety *For more details, please refer to the PDF materials or external link pages, or feel free to contact us.

• Paving Materials
• Exterior and paving materials <General>
• Paving of sidewalks, roads, parking lots and stadiums

This document explains the technical basis for the permeability coefficient in "permeable blast furnace slag pavement (colored sand)." Our paving material uses granulated blast furnace slag as a raw material, which falls under the classification of sand and gravel. Therefore, we conducted a "constant water level permeability test" to measure the permeability coefficient. The result of the constant water level permeability test showed a measured value of 2.56×0.01 cm/sec. Thus, the required permeability coefficient for the sidewalk area in terms of "permeability" is a public standard value of 1.0×0.01 cm/sec. Our measured value exceeds this standard by more than double, proving that our permeable paving material sufficiently meets the required permeability performance for the sidewalk area. [Overview] ■ The permeability coefficient was measured in accordance with the "Soil Permeability Testing Method" based on JISA1218. - Constant water level permeability test: Applicable to soils with relatively high permeability coefficients (sand and gravel). - Variable water level permeability test: Applicable to soils with relatively low permeability coefficients (clay, silt, etc.). ◎ Exceeds the standard value and sufficiently meets the required permeability performance for the sidewalk area. *For more details, please refer to the PDF materials or external link pages, or feel free to contact us.

• Paving Materials
• Exterior and paving materials <General>
• Paving of sidewalks, roads, parking lots and stadiums

This document explains the technical basis for the "permeable and water-retaining blast furnace slag pavement (color sand)" being compliant with "universal design." The target value for slip resistance is set at BPN 40 or higher for wet surfaces, and the color sand pavement exceeds 62, thus meeting the target value. Additionally, since it is a site-cast pavement, it does not pose obstacles for pedestrians and wheelchair users, allowing for smooth curved construction, making it suitable for wheelchair users and visually impaired individuals. Furthermore, it excels in shock absorption, permeability, and water retention. The main factors contributing to overall "walkability" are elasticity, foot feel, and slip resistance. It is necessary to evaluate overall ease of walking and running when selecting walking surfaces. **Features** - Exceeds the target value for slip resistance - Allows for smooth curved construction - Excellent shock absorption and soft walking sensation - Maintains permeability without creating puddles that hinder walking - Highly superior in water retention capacity and duration due to its porous structure *For more details, please refer to the PDF materials or external link pages, or feel free to contact us.*

• Paving Materials
• Exterior and paving materials <General>
• Paving of sidewalks, roads, parking lots and stadiums

We will explain the technical basis of "Permeable and Water-retaining Blast Furnace Slag Pavement (Color Sand)" that achieves both permeability and water retention. All of our paving materials use "granulated blast furnace slag" as the main aggregate. The aggregate itself has a fine porous structure, allowing it to provide both permeability and water retention. While typical permeable paving materials achieve permeability at a "point," our paving materials achieve permeability over a "surface" due to the nature of the aggregate itself, resulting in less clogging and maintaining permeability performance over a long period. Additionally, by cleaning with high-pressure washers, the permeability can be restored to about 80%. Further explanations regarding "permeability performance" and "water retention performance" can be found through external links. [Technical Information Introduction] ■ Reasons for achieving both permeability and water retention ■ Permeability performance ■ Water retention performance ■ Our product lineup *For more details, please refer to the PDF materials or external link pages, or feel free to contact us.

• Paving Materials
• Exterior and paving materials <General>
• Paving of sidewalks, roads, parking lots and stadiums

This document explains the winter benefits of "permeable and water-retaining blast furnace slag pavement (colored sand)." Not only does it function as a measure against summer heat, but its permeability and water retention capabilities also provide benefits during the winter. There is less freezing after the snow melts, and the porous structure of the "granulated blast furnace slag" used as aggregate absorbs the expansion pressure during freezing through countless voids, making it resistant to freeze-thaw cycles. Even if the retained water freezes, the durability of the surface does not decrease. Further explanations on the "effects of winter permeability and water retention functions," "suppression of the summer heat island phenomenon," and "our product lineup and examples of use" can be found through external links. 【Technical Information Introduction】 ■ Suppression of the "heat island phenomenon" in summer ■ Effects of winter permeability and water retention functions - Less freezing after snow melts - Easier snow removal - The water retention function moistens the dry winter air ■ Our product lineup and examples of use *For more details, please refer to the PDF materials or external link pages, or feel free to contact us.

• Paving Materials
• Exterior and paving materials <General>
• Paving of sidewalks, roads, parking lots and stadiums

This document explains the installation of the "filter layer" in "permeable high furnace slag pavement (colored sand)." The pavement structure of colored sand employs "water-quenched slag for civil engineering" as the filter layer. Since this "artificial sand" is produced at steelworks of major steel manufacturers, it has minimal quality variation and possesses characteristics not found in natural soil. This water-quenched slag is porous and angular in shape, exhibiting important geotechnical engineering features such as "lightweight," high "shear resistance," and "permeability." **Effects of Using Water-Quenched Slag for the Filter Layer:** - The particles have a porous shape, providing excellent permeability and water retention. - There is no strength reduction due to infiltrating water, and even if the moisture content decreases, no settlement occurs. - With a design CBR of over 20%, strong support capacity is achieved. *For more details, please refer to the PDF materials or external link pages, or feel free to contact us.*

• Paving Materials
• Exterior and paving materials <General>
• Paving of sidewalks, roads, parking lots and stadiums

This document explains the reasons why "permeable and water-retaining pavement materials (color sand)" are strong against "freeze-thaw" cycles. Color sand is a pedestrian pavement material that possesses permeable and water-retaining functions while being sufficiently resistant to the repeated effects of freeze-thaw cycles in winter, making it "strong against frost damage." Among our pavement composition, the "filter layer" made from high furnace slag pavement, which is the aggregate of this pavement material, has a significant effect in suppressing "frost heave" when used alone. Furthermore, in freeze-thaw tests conducted at the Central Testing Laboratory of the Building Materials Testing Center, no cracking or destruction occurred even after completing 200 cycles. 【Excellent Features of the Aggregate (High Furnace Slag)】 ■ Porous Structure - Numerous fine voids relieve pressure caused by volume expansion during freezing. ■ Potential Hydraulicity - The main components of water-quenched slag (silica, alumina, lime, magnesia) solidify over time due to repeated water infiltration. ◎ Sufficiently resistant to the repeated effects of freeze-thaw cycles. *For more details, please refer to the PDF materials or external link pages, or feel free to contact us.

• Paving Materials
• Exterior and paving materials <General>
• Paving of sidewalks, roads, parking lots and stadiums

This document explains the "technical basis" for the pavement composition of "permeable high furnace slag pavement (color sand)." This pavement is not intended for "roadway pavement" aimed at heavy vehicle traffic, but rather is specifically designed for "pedestrian pavement" to accommodate pedestrian passage. Therefore, as a public standard, it complies with Chapter 7 of the "Pavement Design Manual," which specifically defines the selection, classification, and pavement structure of pedestrian-related road pavements under "pavements for sidewalks and bicycles." Additionally, explanations regarding "the basis for pavement composition and thickness" and "classification as pedestrian-related road pavement materials" can be found through external links. [Introduction of Technical Information] ■ Classification of pavement uses ■ Basis for pavement composition and thickness ■ Classification as pedestrian-related road pavement materials *For more details, please refer to the PDF materials or external link pages, or feel free to contact us.

• Paving Materials
• Exterior and paving materials <General>
• Paving of sidewalks, roads, parking lots and stadiums

This document explains the similarities and differences between "permeable and water-retaining blast furnace slag pavement (colored sand)" and "masato soil pavement." Both have common functions as permeable and water-retaining pavements, and since the aggregate particle size ranges from 5mm to 0mm, they often appear similar, leading to frequent confusion. Additionally, as materials for pedestrian road pavements, they show similarities in major applications such as sidewalks, walking paths, and park paths, as well as in design pricing. For more detailed explanations regarding the differences, please refer to the external link. 【Technical Information Overview】 ■ Similarities - Appearance, major applications, design pricing ■ Differences - Pavement aggregate, permeability, frost resistance, bending strength, pavement color, durability *For more details, please refer to the PDF materials or external link page, or feel free to contact us.

• Paving Materials
• Exterior and paving materials <General>
• Paving of sidewalks, roads, parking lots and stadiums

This document explains the differences in permeability and water retention functions between "permeable and water-retaining blast furnace slag pavement (color sand)" and "porous concrete pavement." Porous concrete pavement allows for point-based permeability, while color sand enables surface-based permeability, distinguishing it as a new type of permeable pavement that has been recognized for its advancement and novelty, and has also obtained a "patent." Additionally, explanations regarding "water retention performance and its effects" and "the duration of sustained permeability" can be found through external links. 【Technical Information Introduction】 ■ Permeability Performance ■ Water Retention Performance and Its Effects ■ Duration of Sustained Permeability *For more details, please refer to the PDF materials or external link pages, or feel free to contact us.

• Paving Materials
• Exterior and paving materials <General>
• Paving of sidewalks, roads, parking lots and stadiums

The permeable and water-retaining paving material "Color Sand" utilizes fine porous aggregate known as "blast furnace crushed slag," achieving high permeability and water retention for landscape paving. Depending on environmental conditions, its durability is approximately 15 to 20 years. With a texture similar to soil, "slag paving" blends easily into natural landscapes. Choosing gray tones can match urban landscapes as well. It allows rainwater to permeate and return to the ground, alleviating the "heat island phenomenon" in urban areas. There are instances where surface temperatures are about 10°C lower compared to asphalt paving. It is designed to minimize puddles and has a high slip resistance, making it easy to walk on during and after rainfall. 【Features】 ■ Excellent functionality (permeability, water retention, freeze resistance, durability, slip resistance) ■ Utilizes aggregates specified for procurement under the Green Purchasing Law, with a recycling rate of over 80% ■ Meets the "surface requirements" needed for sidewalks and bicycle paths ■ Over 1,800 instances of adoption in "public works" ordered by municipalities nationwide ★ Currently, we are offering a "case study collection" for parks and building exteriors. You can view it immediately via [PDF download].

• Paving Materials
• Exterior and paving materials <General>
• Paving of sidewalks, roads, parking lots and stadiums

Permeable and water-retaining paving material colored sand uses "blast furnace crushed slag," a byproduct of steelmaking, as the main aggregate, along with cement additives and inorganic pigments as secondary materials. These components are mixed and compacted using a roller machine to create an environmentally friendly new type of pedestrian road paving material. It allows the precious water resource of the Earth, "rainwater," to permeate and be returned to the ground, alleviating the "heat island phenomenon" in urban areas, reviving spring water, promoting the growth of trees and flowers, and contributing to the creation of urban environments rich in "water and greenery." 【Features】 ○ Excellent permeability ○ No "puddles" form during rainfall, and it is non-slip ○ Alleviates the heat island phenomenon ○ Maintains high "water retention" ○ Soft walking sensation For more details, please contact us or download the catalog.

• Paving Materials
• Exterior and paving materials <General>
• Paving of sidewalks, roads, parking lots and stadiums

Color sand is an environmentally friendly new pedestrian road paving material that uses "blast furnace crushed slag," a byproduct of steelmaking, as the main aggregate, along with cement additives and inorganic pigments as secondary materials. These components are mixed and compacted using a compaction machine to finish the product. It allows rainwater, an invaluable water resource for the Earth, to permeate and be reabsorbed into the ground, alleviating the "heat island phenomenon" in urban areas, reviving spring water, promoting the growth of trees and flowers, and contributing to the creation of urban environments rich in "water and greenery." 【Features】 - Excellent permeability - No puddles during rainfall, non-slip - Mitigates the heat island phenomenon - Maintains high water retention - Soft walking sensation For more details, please contact us or download the catalog.

• Paving Materials
• Exterior and paving materials <General>
• Paving of sidewalks, roads, parking lots and stadiums