A simple numerical methodology to simulate creep and recovery tests in HMA
Source abstract
Abstract
Abstract This study investigates the relationships between shape and size characteristics of aggregates and the creep and recovery behavior of a hot-mix asphalt concrete. A geometric and computational model is developed and calibrated to simulate the creep and recovery tests. It combines viscoelastic and elastic properties of the materials to construct a HMA sample. The model requires an algorithm to randomly generate the particles particle packing considering their shape, sizes and volume occupation of the samples. After validation, the model is used to establish parametric relationships between shape indices and maximum displacement. The results showed good correlations between shape factor and sphericity with the maximum displacement at the end of the loading time. Cubic particles showed less resistance to displacement than the flat and elongated ones. Also, from grain size distribution analysis, it is demonstrated that bigger particles and denser mixtures increase rigidity and resistance to permanent deformation.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Asphalt Pavement Performance Evaluation · Innovative concrete reinforcement materials · Geotechnical and construction materials studies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (42)
Show source-provided references
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