01363776

Component

http://www.trb.org/Publications/Blurbs/166591.aspx

The internal structure of asphalt mixes refers to the directional and spatial arrangement of the mix constituents (aggregates, asphalt, and air voids) as well as the chemical and physical interactions among these constituents. The arrangement of the aggregate particles in terms of spatial distribution, directional distribution, contact points, and packing is referred to as the aggregate skeleton. This section summarizes the methods used in characterizing and quantifying the internal structure distribution in hot-mix asphalt (HMA). These methods utilize imaging techniques to quantify the distribution of the aggregate skeleton and air voids by analyzing two-dimensional and three-dimensional images of the internal structure. The implications of the internal structure analysis on the compaction, performance, and modeling of HMA are also discussed.

01363774

English

0000-0002-7391-6293

pp 2-16

2012-1

Transportation Research Circular

Digital/other

Figures; References

Air voids; Asphalt mixtures; Hot mix asphalt; Image analysis

Imaging systems

Aggregate skeleton; Internal structure (Materials)

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

TRIS, TRB

Feb 23 2012 3:12PM

• Applications of Advanced Models to Understand Behavior and Performance of Asphalt Mixtures. Introduction
• Micromechanical Modeling
• Use of Fracture Tests and Models
• Viscoelastic Continuum Damage Model
• Viscoplastic Modeling of Bituminous Mixtures