Study on Road Performances of GranulatedBlast Furnace Slag Powder Asphalt Mixture
In order to broaden the way of utilizing granulated blast furnace slag,the mixture ratio of AC-13C asphalt mixture was designed by using different proportions of granulated blast furnace slag powder instead of mineral powder,and its pavement performance such as high tem-perature stability,water stability and low temperature crack resistance was compared.The results show that the high temperature stability and high temperature water stability of asphalt mixture are improved by using granulated blast furnace slag powder as filler,but the low temperature water stability is reduced.When the replacement rate of granulated blast furnace slag powder is less than 50%,the low temperature crack re-sistance of asphalt mixture can be improved,while when the replacement rate of granulated blast furnace slag powder is more than 50%,the low temperature crack resistance of asphalt mixture can be reduced.The comprehensive analysis suggests that the replacement rate of granula-ted blast furnace slag powder of AC-13C asphalt mixture should not exceed 50%.
Granulated blast furnace slag powder asphalt mixtureHigh temperature stabilityWater stabilityLow temperature crack resistance
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