Mechanical Analysis Model of Asphalt Concrete Random Particles Based on Mix Ratio

Abstract

The strength and other mechanical properties of asphalt mixtures are directly affected by their size, shape, distribution, and interaction of asphalt concrete particles. Mesoscale performance is important for studying the structure of asphalt mixtures. The random particle model of asphalt concrete is one of the important topics in mesoscale research. On the basis of existing research at home and abroad, based on the asphalt mixture mix ratio, this paper further improves the algorithm of random particle generation, optimizes the algorithm of single-particle generation, ensures that the shape of particles at the time of generation conforms to the engineering practice, and forms a random particle reserve library, in order to improve the efficiency of particle delivery, facilitate the model mesh division, and provide a basis for the smooth progress of mechanical analysis.

Investigation of Particle Rotation Characteristics and Compaction Quality Control of Asphalt Pavement Using the Discrete Element Method

“…Therefore, it is necessary to delve into the compaction mechanism of asphalt pavements, particularly from the perspective of particle dynamics and rotational behavior. Particles within asphalt mixtures reduce voids by moving and spinning throughout the compaction phase, thereby enhancing the load-bearing capacity of the pavement [ 9 ]. Hence, studying the rotation and movement of asphalt mixture particles during compaction is crucial for understanding the compaction mechanism of asphalt pavements and further optimizing intelligent compaction technology.…”

“…Wang et al [ 12 ] studied the rotational features of aggregates during gyratory compaction using SmartRock, correlating it with the density of asphalt mixtures. Moreover, the study of particle rotational characteristics using SmartRock provided effective indicators for researching the compaction of asphalt mixtures [ 9 ]. However, due to the limitations in the number and placement of sensors within the mixture, their data may not represent the overall compaction condition of the asphalt mixture, affecting the universality of the research findings.…”