Introducing technical information about permeable and water-retaining blast furnace slag pavement "Color Sand"!
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, to prevent the deterioration of the pavement surface, it releases pressure caused by the volume expansion of moisture during freezing, which occurs due to repeated freeze-thaw cycles in winter. For more information, including "representative examples of sites that have maintained paving functionality for over 15 years," please refer to the 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.
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basic information
【Features of Color Sand】 ■ Excellent permeability ■ No puddles during rainfall, non-slip ■ Refreshing pavement even in midsummer ■ Maintains high water retention ■ Soft walking sensation ■ Mitigates the heat island effect ■ Excellent freeze resistance ■ Eco-friendly pavement *For more details, please refer to the PDF materials, external link pages, or feel free to contact us.
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Applications/Examples of results
For more details, please refer to the PDF materials or external link page, or feel free to contact us.
Detailed information
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Representative example of the site: Akebono Children's Forest Park Development Project (Hanno City, Saitama Prefecture)
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Representative example of the site: Comprehensive Improvement Project for Mountainous and Hilly Areas (Minamiaizu Agricultural and Forestry Office, Fukushima Prefecture)
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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."