Answers are grounded in this paper and cite their sources.
Validation study demonstrates improved oxidation prediction in asphalt field cores using total air void diffusion depth, indicating better modeling of pavement aging.
Pavement oxidation modeling has been used to relate binder oxidation to pavement failure. The diffusion depth, a key parameter, defined as asphalt volume divided by accessible air void (AAV) surface area, is determined via X-ray computed tomography analysis. Analysis of nine field cores showed total air void (TAV) and AAV variation with depth to be generally similar; nevertheless, two cores had especially low AAV content in lower slices. Oxidation in these lower slices was not correspondingly low, suggesting the development of a new diffusion depth based on TAVs. Modeling using a TAV diffusion depth provided superior overall oxidation predictions.
No takes yet. Share an insight, caveat, or question.
Rose et al. (2015) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: