Adopted at Ueno Zoo's Panda Forest! A paving material that excels in permeability and water retention, with examples of surface temperatures as low as -10°C! It combines durability and aesthetic appeal.
The permeable and water-retaining paving material "Color Sand" utilizes finely porous aggregate "Blast Furnace Water-quenched Slag," achieving high permeability and water retention as a landscape paving material. 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. There have been instances where surface temperatures were 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 even during and after rainfall. 【Features】 ■ Excellent functionality (permeability, water retention, freeze resistance, durability, slip resistance) ■ Utilizes aggregates designated 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 architectural landscaping. You can view it immediately via the 【PDF download】.
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basic information
【Examples of Use】 ◎ Park paths ◎ Walkways ◎ Walking trails ◎ Architectural exteriors etc. 【Specifications】 Bending strength: 30 kgf/cm² or more Permeability: 2.0×10^-2 cm/sec or more (0.02 cm/sec) Difficult to form puddles on the surface even during heavy rain of 30 mm/h Water retention: 0.23 g/cm³ or more Slip resistance value: BPN value of 70 or more Frost resistance: Highly frost-resistant, with extensive performance in cold regions Service life (average): Maintains sufficient "paving function" even after more than 15 years Paving colors: Standard 5 colors (Soft Red, Light Brown, Yellow, Sand Beige, Natural) On-site quality control: Specimens for "bending strength tests" are produced at each site and tested by public testing institutions *For more details, please refer to the materials. Feel free to contact us with any inquiries.
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Applications/Examples of results
【Usage】 ○CS-I → Sidewalks, squares, park paths, and bicycle paths exclusively for pedestrians and bicycles. ○CS-II → Pedestrian roads where vehicles under 4 tons for management purposes and passenger cars can also pass, in addition to pedestrians and bicycles. ○CS-III → Internal roads where large vehicles and emergency vehicles (large fire trucks) can temporarily enter. *For more details, please refer to the materials. Feel free to contact us with any inquiries.
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Company information
The permeable and water-retaining pavement materials developed by Sanwa Grand Co., Ltd. allow rainwater, an invaluable water resource for the Earth, to permeate and be returned to the ground, thereby alleviating the "heat island phenomenon" in urban areas during the summer, revitalizing spring water, promoting the growth of trees and flowers, and restoring "water and greenery" in the city, creating a pavement that is friendly to both people and nature. Our company aims to contribute to society as a member of a company that creates a comfortable environment through the dissemination of these environmentally friendly pavement materials, which excel in permeability and water retention. Our pavement materials are also ideal for areas with high social needs, such as "barrier-free" access, "disaster evacuation routes," "weed prevention measures," and "school route improvements."