Research on Aging Resistance and Thermal Stability of Convex Rod Soil/SBS Composite Modified Asphalt
In order to explore the effect of attapulgite on the aging resistance and thermal stability of SBS modified asphalt,composite modified asphalt with different content of attapulgite is prepared.The changes of basic physical properties and chemical components of composite modified asphalt before and after aging are studied.The thermal stability of composite modified asphalt is analyzed by thermogravimetric experiment.The results show that the introduction of attapulgite can improve the thermal stability of asphalt,improve the high temperature performance of asphalt,and reduce the aging rate of asphalt.However,more than 7.5％of attapulgite content may have a negative impact on asphalt performance,and its optimal content should not exceed 7.5％.
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