01025490

Component

https://doi.org/10.3141/1970-15

http://scholar.google.com...Hall&publication_year=2006

The dynamic modulus (|E*|) of hot-mix asphalt (HMA) is one of the fundamental inputs in the mechanistic–empirical (M-E) pavement design guide developed in NCHRP Project 1-37A. The M-E design guide provides three levels for |E*| input, which are related nominally to the reliability of pavement performance estimates generated by the guide. Level 1 |E*| inputs require laboratory-measured |E*|-values, and Level 2 and 3 |E*| inputs are estimated by using a predictive equation. To provide the laboratory-measured |E*| inputs for implementation of the M-E design guide, a comprehensive research effort was completed in Arkansas. The research included a study evaluating different |E*| testing protocols, derived by varying combinations of the number of test replicates and the number of measurement instruments affixed on each test specimen recommended in AASHTO TP 62-03. The testing protocols were evaluated in terms of the variability of the resulting |E*| test results. The total research effort included three replicate specimens from each of four aggregate types, three nominal maximum aggregate sizes, two performance grade binder grades, and two air void levels. The |E*| tests were conducted with five test temperatures and six loading frequencies. Even though all evaluated testing protocols produced standard errors of less than 15% (which is the requirement specified in AASHTO TP 62-03), a program utilizing four measurement instruments and two replicate specimens is recommended for future |E*| testing.

01038330

English

pp 126-132

2006

Transportation Research Record: Journal of the Transportation Research Board

030909979X

Print

Figures (8) ; Photos (1) ; References (12) ; Tables (1)

Aggregates; Air voids; Bituminous binders; Dynamic modulus of elasticity; Hot mix asphalt; Temperature

Mechanistic-Empirical Pavement Design Guide

Nominal maximum aggregate size; Test protocols

Geotechnology; Highways; Materials; I31: Bituminous Binders and Materials

PRP, TRIS, TRB, ATRI

Mar 3 2006 10:42AM

• Comparing Resilient Modulus and Dynamic Modulus of Hot-Mix Asphalt as Material Properties for Flexible Pavement Design
• Computational Model to Predict Fatigue Damage Behavior of Asphalt Mixtures Under Cyclic Loading
• Determination of Asphalt Concrete Complex Modulus with Impact Resonance Test
• Dissipated Energy Approach to Study Hot-Mix Asphalt Healing in Fatigue
• Establishment of Precision of Dynamic Angle Validation Kit with Hot-Mix Simulator for Superpave Gyratory Compactors
• Evaluation of Effect of Heat-Adhesive Emulsions for Tack Coats with Shear Test: From the Road Research Laboratory of Barcelona
• Evaluation of Hamburg Wheel-Tracking Device Test with Laboratory and Field Performance Data (With Discussion and Closure)
• Evaluation of Healing Property of Asphalt Mixtures
• Investigating Pavement Cracking: Evolutionary Modular Neural Network Approach
• Limits on Adhesive Bond Energy for Improved Resistance of Hot-Mix Asphalt to Moisture Damage
• Long-Term Effectiveness of Antistripping Additives: Laboratory Evaluation
• Measurements of Moisture Suction and Diffusion Coefficient in Hot-Mix Asphalt and Their Relationships to Moisture Damage
• Mechanical Mixture Simulation Devices for Determining and Calibrating Internal Angle of Gyration in Superpave Gyratory Compactor
• Micromechanical Analyses for Measurement and Prediction of Hot-Mix Asphalt Fracture Energy
• Micromechanical Modeling Approach to Predict Compressive Dynamic Moduli of Asphalt Mixtures Using the Distinct Element Method
• New Laboratory Equipment for Study of Reflective Cracking in Asphalt Overlays
• Observation of Crack Propagation in Asphalt Mixtures Using Acoustic Emission
• Pavement Design Analysis with 2002 Design Guide Software
• Permanent Deformation Analysis of Hot-Mix Asphalt Mixtures Using Simple Performance Tests and 2002 Mechanistic-Empirical Pavement Design Software
• Simple Method for Predicting Laboratory and Field Permeability of Hot-Mix Asphalt
• Transitioning from Texas Gyratory Compactor to Superpave Gyratory Compactor
• Uniaxial Penetration Testing for Shear Resistance of Hot-Mix Asphalt Mixtures