期刊
TRANSPORTATION GEOTECHNICS
卷 42, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.trgeo.2023.101084
关键词
Vibratory compaction; Unbound aggregate materials; Particle movement; Compaction quality; Automated intelligent compaction
This paper reveals the meso-scale mechanisms of macroscopic vibratory compaction behavior of unbound aggregate materials (UAMs) and proposes two novel compaction quality indicators based on particle movement characteristics.
The compaction quality greatly affects the in-service performance of unbound aggregate materials (UAMs); however, there still lack real-time, non-destructive, and effective indices for compaction quality assessment. This paper aimed to reveal meso-scale mechanisms of macroscopic vibratory compaction behavior and evaluate compaction quality from particle movement characteristics. A series of newly-developed laboratory vibratory plate compaction tests were conducted on UAM specimens of different gradations. The innovative self-powered, wireless sensors resembling realistic particles (termed as SR sensors) were placed inside UAM specimens to monitor three-dimensional (3D) particle accelerations and Euler angles during vibratory compaction. The effects of gradation and vibratory frequency on both macroscopic compaction behavior and meso-scale particle motion characteristics were analyzed. The results show that the entire vibratory compaction process can be divided into three distinct stages according to discernibly-staged particle movement patterns. The degree of compaction (DOC) of UAMs is significantly correlated with two novel particle-motion-based compaction quality indicators.
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