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Abstract

Permeable asphalt pavement is characterized by large voids, and has significant advantages in improving road drainage and ensuring driving safety in rainy days. However, due to its high void content, dust blockage, and vehicle load, it is prone to the void decay, thus degrading the drainage function. To study the decay law of the permeability coefficient of permeable asphalt mixtures in particle blockage and compaction conditions, this paper built a permeability coefficient decay model for permeable asphalt pavement based on fluid dynamics theory to predict the variation law of the permeability coefficient of permeable asphalt pavement under the effects of void blockage and driving over time. The results indicate that the decay rate of the permeability coefficient of permeable asphalt mixtures is exponentially related to the quality of void blockage and the number of compaction cycles. In practical utilization, the decay rate of the permeability coefficient of permeable asphalt pavement is directly related to the initial void content, utilization time, accumulation rate of dust particles, filtration coefficient, and compaction times.

Publication Date

11-8-2022

DOI

10.14048/j.issn.1671-2579.2022.05.041

First Page

226

Last Page

231

Submission Date

April 2025

Reference

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