Introducing technical information about permeable blast furnace slag pavement "Color Sand"!
This document explains the technical basis for the permeability coefficient in "permeable blast furnace slag pavement (colored sand)." Our paving materials use granulated blast furnace slag as a raw material, which falls under the classification of sand and gravel. Therefore, we conducted the "constant head permeability test" to measure the permeability coefficient. The result of the constant head 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 material exceeds this standard value by more than double, proving that it sufficiently meets the permeability performance required for sidewalk areas. [Overview] ■ The permeability coefficient was measured in accordance with the "Soil Permeability Testing Method" based on JISA1218. - Constant head permeability test... Applied to soils with relatively high permeability coefficients (sand and gravel). - Falling head permeability test... Applied to soils with relatively low permeability coefficients (clay, silt, etc.). ◎ Exceeds the standard value and sufficiently meets the permeability performance required for sidewalk areas. *For more details, please refer to the PDF document or external link page, 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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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."