01044566

Component

https://doi.org/10.3141/2005-04

http://scholar.google.com...+Dai&publication_year=2007

Twenty resilient modulus (M sub R) tests were conducted for specimens with different ratios of recycled asphalt pavement (RAP) and aggregate to investigate the effect on material stiffness. Specimens were prepared by a gyratory compactor instead of a vibratory hammer, because the density of a gyratory-compacted specimen was closer to the field density. Moisture content and density were estimated before and during the tests according to the NCHRP 1-28A protocol requirements. M sub R data were evaluated by quality control–quality assurance (QC/QA) criteria such as the angle of rotation, signal-to-noise ratio, and coefficient of variance, and about 95% of the sequences passed the QC/QA criteria. Specimens with 65% optimum moisture content were stiffer than the specimens with 100% optimum moisture content at all confining pressures. The 50% aggregate–50% RAP specimens developed stiffness equivalent to 100% aggregate specimens at lower confining pressures; at higher confinement, the RAP specimens were stiffer. However, from the tracking of axial displacement during the conditioning sequence, it appeared that the specimens with RAP exhibited greater permanent deformation than the 100% aggregate material.

01082341

English

pp 27-35

2007

Transportation Research Record: Journal of the Transportation Research Board

9780309104319

Print

Figures (8) ; References (10) ; Tables (3)

Base course (Pavements); Confining pressure; Density; Modulus of resilience; Moisture content; Quality assurance; Quality control; Recycled materials; Specimens; Stiffness

Gyratory compactors; Sample preparation

Design; Highways; Pavements; I22: Design of Pavements, Railways and Guideways

TRIS, TRB, ATRI

Feb 8 2007 5:21PM

• Advanced Approaches to Characterizing Nonlinear Pavement System Responses
• Consideration of Finite Slab Size in Backcalculation Analysis of Jointed Concrete Pavements
• Development of Transfer Functions for Spectral Compatibility of Inertial Profilers Used in Long-Term Pavement Performance Program
• Early-Life Performance of Cold-in-Place Pavement Recycling with Foamed Asphalt Technique
• Effectiveness of Transverse and Longitudinal Pavement Grooving in Wet-Skidding Control
• Effects of Reclaimed Asphalt Pavement on Mechanical Properties of Base Materials
• Effects of Slab Temperature Profiles on Use of Falling Weight Deflectometer Data to Monitor Joint Performance and Detect Voids
• Engineering Framework for Self-Consistent Analysis of Falling Weight Deflectometer Data
• Evaluation of New Mechanistic–Empirical Pavement Design Guide Rutting Models for Multiple-Axle Loads
• Evaluation of Rubblized Pavement Sections in Michigan
• Forwardcalculation of Pavement Moduli with Load-Deflection Data
• Noninvasive Measurement of Three-Dimensional Permanent Strains in Asphalt Concrete with X-Ray Tomography Imaging
• Performance Evaluation of Bonded Concrete Pavement Overlays After 11 Years
• Prediction of Wet-Pavement Skid Resistance and Hydroplaning Potential
• Stripping Detection in Asphalt Pavements with Seismic Methods
• Ultrathin Bonded Wearing Course as Pavement Preservation Treatment for Jointed Concrete Pavements
• Wavelet Analysis of Energy Content in Pavement Roughness and Truck Dynamic Axle Loads