01044223

Component

https://doi.org/10.3141/1998-09

http://scholar.google.com...lyne&publication_year=2007

Fine aggregate angularity (FAA) requirement is one of the aggregate consensus properties recommended by SHRP. Many state highway departments include FAA as part of their Superpave® mixture design specifications. Recent concerns about pavement performance and aggregate shape have caused these agencies to reinvestigate whether standard FAA testing provides information indicative of performance. This paper presents the results from standard FAA tests and digital imaging to investigate the validity of FAA requirements. Testing was performed on four asphalt mixtures representing a range of FAA values. Dynamic modulus testing was performed at three temperatures and five frequencies, and master curves were obtained using nonlinear regression. Asphalt pavement analyzer data obtained at one temperature were analyzed with respect to the rutting curve and rate of rutting. The experimental results for aggregates and mixtures were analyzed together by using statistical methods to develop correlation coefficients and linear trends. It was found that dynamic modulus and rut resistance values were strongly related to aggregate blend FAA. Some additional parameters from digital imaging also predicted modulus and rut resistance very well and should be included in future research.

01082316

English

pp 75-81

2007

Transportation Research Record: Journal of the Transportation Research Board

9780309104241

Print

Figures (12) ; References (8) ; Tables (6)

Asphalt concrete; Asphalt mixtures; Dynamic modulus of elasticity; Fine aggregates; Mix design; Rutting; Superpave

Imaging systems

Asphalt Pavement Analyzer

Aggregate angularity

Geotechnology; Highways; Materials; I31: Bituminous Binders and Materials; I36: Aggregates

TRIS, TRB, ATRI

Feb 8 2007 6:14PM

• Comparative Laboratory Study of Sasobit and Aspha-Min Additives in Warm-Mix Asphalt
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• Effect of Aggregate Degradation on Volumetric Properties of Georgia’s Hot-Mix Asphalt
• Effect of Calcareous Fillers on Bituminous Mix Aging
• Effect of Modification Processes on Bond Energy of Asphalt Binders
• Effects of Aggregate Surface and Water on Rheology of Asphalt Films
• Evaluation of Heated Reclaimed Asphalt Pavement Material and Wax-Modified Asphalt for Use in Recycled Hot-Mix Asphalt
• Field Performance of Warm-Mix Asphalt at National Center for Asphalt Technology Test Track
• Impact of Lime and Liquid Antistrip Agents on Properties of Idaho Hot-Mix Asphalt Mixture
• Investigation of Properties of Plant-Produced Reclaimed Asphalt Pavement Mixtures
• Laboratory Investigations of Mechanical Performance of Foamed Bitumen Mixes That Use Half-Warm Aggregates
• Loss of Polymer-Modified Binder Durability with Oxidative Aging: Base Binder Stiffening Versus Polymer Degradation
• Moisture Sensitivity of Modified Asphalt Binders: Factors Influencing Bond Strength
• Role of Viscosity in Dynamic Creep Tests in Conventional, Oxidized, and Polymer-Modified Asphalts
• Thermal Sensitivity and Fatigue Life of Gap-Graded Asphalt Mixes Incorporating Crumb Rubber from Tire Waste