Study on Migratory Behavior of Aggregate in Asphalt Mixture Based on the Intelligent Acquisition System of Aggregate Attitude Data

In order to provide a new method study the migration behavior of coarse aggregates in compaction process asphalt mixtures, “Intelligent Aggregate Attitude Acquisition System (IAS)” is developed based on 3D printing technology and wireless intelligent sensing technology, (IAA)” prepared as acquisition terminal. The Superpave Gyratory Compaction (SGC) test Internet Things (IOT) sensor are combined collect analyze attitude data an SMA-20 mixture built IAA at different stages, aggregate quantitatively characterized. result shows that suitable “tracking aggregate” transfer mixtures. upper layer tends move vertically downward, while particles lower tend horizontally spatial rotation rotating compaction. With increase content, lubrication effect between obvious, friction resistance decreases when it embedded downward. Affected by shear force rotary compaction, easier overcome cause large horizontal rotation. temperature, viscosity binder decreases, contact decreases. content has significant displacement plane Dxoy aggregate. temperature have effects angle Φ aggregate, but greater impact it.