Experimental Study on Aging Property of SBS Modified Biological Asphalt
In order to improve the aging performance of biological asphalt,three indexes of matrix asphalt,biological asphalt and SBS modified biological asphalt,rutting aging index and the rule of component change were tested under the conditions of film oven aging and different PAV aging time.The test results showed that PAI and DAI of all bitumen decreased with the deepening of aging degree,while SAI and RAI in-creased continuously,that is,the stronger the aging degree,the worse the anti-aging ability of bitumen.In short,SBS can effectively improve the anti-aging performance of biological asphalt.The above research can provide reference for the study of asphalt properties.
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