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Aggregate effect on asphalt mixture Properties by modeling particle-to-partic…
A number of researchers have studied aggregate characteristics including elogation, flatness, and other shapes that are belived to effect asphalt mixture properties such as internal resistence, rutting resistance, tensile strenght, and complex modulus etc. However the aggregate modulus also affects the asphalt mixture modulus significantly, wich has not been taken into consideration. In this pa…
Fundamental mechanics of asphalt compaction through FEM and DEM modeling
The compaction of asphalt concrete in the last step in controlling the quality of pavement. Tremendous information on the mixture's characteristics, segregation, and fundamental properties of asphalt concrete demonstrates itself in the compaction process. An understanding of the fundamental mechanisms of compaction will help better control the quality of asphalt concrete pavement. This paper pr…
Stress concentration factor as a performance indicator for asphalt mixes
This paper present some recent developments in using Finite Element Method (FEM) and the 3D microstructure of asphalt concrete reconstructed from x-ray tomography imaging to evaluete its performance. Asphalt concrete is modeled as a material composed of an effective solid and void. The stress concentration factor and its distribution are computed and correlated to the overall resistence of the …
