Laboratory evaluation of the effects of aggregated gradation and binder type on performance of asphalt mixtures
Findings from a laboratory study on the performance of seven different asphalt mixtures are presented. The mixtures were developed by systematically changing aggregate gradations and binders to investigate the effects of these mixture variables on performance. Dynamic Shear Rheometer (DSR) and Bending Beam Rheometer (BBR) tests were conducted on the binders to obtain temperature susceptibility. Axial creep, triaxial repeated permanent deformation, and uniaxial tensile fatigue tests were performed on the mixtures. Fatigue data were analyzed using the viscoelastic, continuum damage approach. The results from the experiments were investigated together to evaluate the effects of different gradations and asphalt modifications.
As the different leaving layers had different temperature and different styles in the accumulating process,the accumulating grains were divided into A,B,C class.The fermented grains of A,B,and C class were fermented with different leaving layers,respectively.One of the combinations could enable the top wine more prominent with sauce flavor,the middle wine more sweet,and the lower wine more distinct with cellar flavor.Another combination could enable the middle and lower wine more prominent with sauce flavor.