Analysis of the Effect of Direct Injection Modifiers on the Properties of Asphalt and Its Mixtures
Dry direct injection modification is an efficient and effective modification method to enhance the performance of asphalt mixtures.In this paper,ZM modifier was used as a research object to study the effect of direct injection modifier on the performance of asphalt and its mixtures.The rheological properties of ZM-modified asphalt were evaluated using dynamic shear rheology(DSR)and bending beam rheology(BBR)tests.The effects of ZM modifier on the road performance of asphalt mixtures were evaluated by rutting tests,freeze-thaw splitting,and other experiments.The test results show that ZM modifier can significantly improve the high-temperature rheological properties,elastic recovery ability,and reduce the temperature sensitivity of asphalt.ZM modifier asphalt mixtures have good road performance under the dry direct injection mixing process,with a 133％increase in dynamic stability and a 39.1％reduction in rutting depth.
dry direct casting processasphalt mixturerheological propertyroad performance
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