01123025

Component

https://doi.org/10.3141/2116-02

http://scholar.google.com...oney&publication_year=2009

Vibratory roller-based measurement of soil stiffness during intelligent compaction and continuous compaction control can be used for performance-based quality assurance of unbound materials. To realize this potential, the relationship between the roller-measured soil stiffness and the soil modulus, particularly resilient modulus, must be understood. The in situ stress states and paths experienced by soil beneath a vibratory roller were compared with stress states and paths during laboratory resilient modulus testing. Observed stress fields within the 1-m depth of influence varied considerably for both vertically homogeneous embankment soil and layered base over subgrade conditions. During low excitation force vibration, roller-induced levels of deviator stress were notably greater than those used during laboratory resilient modulus testing, whereas levels of mean stress were less. Predicted modulus variation with depth was strongly influenced by modulus function parameters. With typical granular soil parameters, modulus was found to be constant with depth for the embankment conditions. With modulus parameters of more fine-grained behavior, modulus increased considerably with depth.

01147419

09-3582

English

pp 8-15

2009

Transportation Research Record: Journal of the Transportation Research Board

9780309126311

Print

Figures (10) ; References (19)

Embankments; Fine grained soils; Granular soils; Modulus of resilience; Quality assurance; Soil compaction; Stiffness; Stresses; Subgrade (Pavements); Vibratory compaction

Continuous compaction control; Intelligent compaction; Soil stiffness; Stress paths

Construction; Geotechnology; Highways; Pavements; I51: Earthworks and Soil Drainage; I52: Construction of Pavements and Surfacings

TRIS, TRB, ATRI

Jan 30 2009 8:00PM

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• Capacities and Deflections of Laterally Loaded Shafts Behind Mechanically Stabilized Earth Wall
• Deformation Factors of Buried Corrugated Structures
• Evaluation of High-Capacity Composite Spun Piles
• Evaluation of the Zone of Influence and Stiffness Improvement from Geogrid Reinforcement in Granular Materials
• Fatigue Evaluation of Porous Asphalt Composites with Carbon Fiber Reinforcement Polymer Grids
• Full-Scale Evaluation of Geosynthetic-Reinforced Aggregate Roads
• Geogrid Base Reinforcement with Aggregate Interlock and Modeling of Associated Stiffness Enhancement in Mechanistic Pavement Analysis
• High-Capacity Piles at the Stony Creek Bridge Project
• Horizontal Drains in a Clay–Landslide Stabilization Test Program
• Instrumented Rollers to Assess Construction Quality on Texas Projects
• North Carolina Department of Transportation’s Practice and Experience with Design–Build Contracts: Geotechnical Perspective
• Stiffness-Based Assessment of Pavement Foundation Materials Using Portable Tools