Study on the properties of emulsified asphalt modified by C9 petroleum resin/SBR composite for adhesive layer
C9 Petroleum resin and SBR latex were used to prepare high performance composite modified emulsified asphalt.The macro service performance of the composite modified emulsified asphalt was evalu-ated by three index tests,high temperature and low temperature rheological tests.The storage stability and compatibility of the composite modified emulsified asphalt were analyzed by laser particle size analyzer,fluorescence microscope and infrared spectrometer,and the modification mechanism of C9 petroleum res-in/SBR composite modifier on the emulsified asphalt was revealed.The results show that C9 petroleum resin can improve the mechanical strength and high temperature deformation resistance of emulsified as-phalt,while SBR latex can significantly improve the low temperature cracking resistance of emulsified as-phalt and reduce the creep stiffness by30.4%.The prepared C9 petroleum resin/SBR composite modified emulsified asphalt has good storage stability.The composite modification mechanism of C9 petroleum resin and SBR latex on emulsified asphalt is physical miscibility.It is recommended that the content of C9 petroleum resin should not be higher than 8%.
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