Laboratory investigation of gyratory-vibratory compaction method for better simulating asphalt mixture field compaction

Article Construction & Building Technology

Evaluation of inverted pavement by structural condition indicators from falling weight deflectometer

Xi Jiang et al.

Summary: Inverted pavement, relying on the stress-dependence of unbound stone interlayer, lacks systematic studies on using FWD for structural evaluation. The DBPs-based evaluation system can provide a comprehensive assessment for each layer in the inverted pavement structure quickly, without detailed layer properties, and the evaluation results are consistent with testing vehicle data.

CONSTRUCTION AND BUILDING MATERIALS (2022)

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Article Engineering, Chemical

Experimental and Numerical Analysis on Mesoscale Mechanical Behavior of Coarse Aggregates in the Asphalt Mixture during Gyratory Compaction

De Zhang et al.

Summary: This study analyzed the mesoscale mechanical behaviors of coarse aggregates in asphalt mixtures during gyratory compaction through experiments and numerical simulations. The findings include the periodic change of contact stress between particles, the influence of aggregate shape on contact stress, the change in proportion of strong contacts with compaction cycles, and the weakening of anisotropy in aggregate contact force networks.

PROCESSES (2022)

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Article Engineering, Civil

Field investigation and numerical analysis of an inverted pavement system in Tennessee, USA

Xi Jiang et al.

Summary: This study presents a comprehensive field study on inverted pavement and conventional pavement in Tennessee, USA, using multiple non-destructive testing methods to assess their thickness, structural capacity, and surface conditions. The results show that the inverted pavement outperforms the conventional pavement in terms of roughness, cracking, and rutting conditions.

TRANSPORTATION GEOTECHNICS (2022)

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Article Construction & Building Technology

SmartRock-Based Research on Gyratory Locking Point for Stone Mastic Asphalt Mixture

Zhiqiang Cheng et al.

Summary: This study investigates the determination method of the locking point in gyratory compaction, and finds that the locking point can be determined by the representative stress value when SmartRock is embedded in the center of the specimen. Furthermore, the study also reveals that the representative rotation angle value reaches a plateau earlier than the representative stress value.

BUILDINGS (2022)

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Article Construction & Building Technology