Quantitative characterization of microstructure of asphalt mixtures

Bhasin, Amit; Badgekar, Swapneel; Izadi, Anoosha; Texas Transportation Institute; University of Texas at Austin. Center for Transportation Research; United States. Department of Transportation. University Transportation Centers (UTC) Program

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Quantitative characterization of microstructure of asphalt mixtures

2010-10-01
By Bhasin, Amit ; Badgekar, Swapneel ; Izadi, Anoosha

[PDF-4.97 MB]

English

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Creators:

Bhasin, Amit ; Badgekar, Swapneel ; Izadi, Anoosha

Bhasin, Amit ; Badgekar, Swapneel ; Izadi, Anoosha Less -
Corporate Creators:

Texas Transportation Institute ; University of Texas at Austin. Center for Transportation Research ; United States. Department of Transportation. University Transportation Centers (UTC) Program

Texas Transportation Institute ; University of Texas at Austin. Center for Transportation Research ; United States. Department of Transportation. University Transportation Centers (UTC) Program Less -
Subject/TRT Terms:

[+]

Aggregate Mixtures Asphalt Mixtures Coarse Aggregates Fatigue Cracking Fine Aggregates Mastic Asphalt Microstructure Quantitative Analysis X-Ray CT
Publication/ Report Number:

SWUTC/10/476660-00070-1 ; Report 476660-00070-1

SWUTC/10/476660-00070-1 ; Report 476660-00070-1 Less -
Resource Type:

Research Paper
Geographical Coverage:

Texas
Corporate Publisher:

Southwest Region University Transportation Center (U.S.)
Abstract:

The microstructure of the fine aggregate matrix has a significant influence on the

mechanical properties and evolution of damage in an asphalt mixture. However, very little

work has been done to define and quantitatively characterize the microstructure of the asphalt

mastic within the asphalt mixture. The main objective of this study was to quantitatively

characterize the three dimensional microstructure of the asphalt binder within the fine

aggregate matrix of an asphalt mixture and compare the influence of binder content, coarse

aggregate gradation, and fine aggregate gradation on this microstructure. Results indicate

that gradation of the fine aggregate has the most influence of the degree of anisotropy

whereas gradation of the coarse aggregate has the most influence on the direction anisotropy

of the asphalt mastic within the fine aggregate matrix. Addition of asphalt binder or

adjustments to the fine aggregate gradation also resulted in a more uniform distribution of the

asphalt mastic within the fine aggregate matrix.
Format:

PDF
Funding:

DTRT07-G-0006
Collection(s):

University Transportation Centers US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:53ff3d2857a46415aaece1e3ee19e9eb450fc900ece9c508906341529cfde37d
Download URL:

https://rosap.ntl.bts.gov/view/dot/18623/dot_18623_DS1.pdf
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Quantitative characterization of microstructure of asphalt mixtures

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