Research and Development > JFE TECHNICAL REPORT > No.13 Special Issue on “Ironmaking Technology” and “Slag Products” > Road Temperature Mitigation Effect of “Road Cool,” a Water-Retentive Material Using Blast Furnace Slag

No.13 Special Issue on “Ironmaking Technology” and “Slag Products”

Road Temperature Mitigation Effect of “Road Cool,” a Water-Retentive Material Using Blast Furnace Slag

TAKAHASHI Katsunori     YABUTA Kazuya

Abstract

JFE Steel developed water-retentive material using blast furnace slag for water-retentive pavement, which is applied for mitigating urban heat-island phenomenon, and commercialized with improved durability of temperature reducing effect. Water absorbing properties are maintained at a high level after the accelerated aging test. Mitigation effect of pavements’ temperature of the third summer season is almost the same as that of initial stage. Both simulation and observation indicate that “Road Cool” pavements with 10 cm thickness keep its surface temperature low for almost a week after a single rainfall.

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