Introducing technical information about permeable blast furnace slag pavement "Color Sand"!
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.*
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**Effects of Using Water-Granulated Slag in the Filter Layer** - The particles of water-granulated slag have a porous shape and a high void ratio, allowing the entire filter layer to store rainwater, which can then slowly permeate into the underlying ground. - Due to the latent hydraulic properties of water-granulated slag, it solidifies over time. - The shear strength increases, functioning as a plate effect, which helps reduce compaction settlement in pavements. - It does not cause a decrease in strength due to infiltrating water, and no settlement phenomena are observed even as the water content ratio decreases over time. - It is largely unaffected by the water content ratio, consistently providing strong support with a design CBR of over 20%. *For more details, please refer to the PDF materials or external link pages, or feel free to contact us.*
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For more details, please refer to the PDF materials or the external link page, or feel free to contact us.
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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, reviving spring water, promoting the growth of trees and flowers, and regenerating "moisture of 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," "disaster evacuation routes," "weed control measures," and "school route maintenance."
