Chemical Characterization of Asphalts Related to Their Performance [Tech Summary]

Daly, William; Cooper III, Samuel

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Chemical Characterization of Asphalts Related to Their Performance [Tech Summary]

2019-07-01
By Daly, William ; Cooper III, Samuel

File Language:

English

Details

Creators:

Daly, William ; Cooper III, Samuel
Corporate Creators:

Louisiana Transportation Research Center
Corporate Contributors:

Louisiana. Department of Transportation and Development ; United States. Department of Transportation. Federal Highway Administration
Subject/TRT Terms:
Publication/ Report Number:

State Project No. 30001080 / LTRC Project No. 12-3B
Resource Type:

Brief
Geographical Coverage:

Louisiana ; United States
Edition:

Tech Summary
Corporate Publisher:

Louisiana Transportation Research Center
Abstract:

Using recycled asphalt pavements (RAP) and recycled asphalt shingles (RAS) blended with virgin binder for new road pavements is an environmentally friendly way to recycle the used asphalt. In this project, researchers studied a correlation between the molecular structure of asphalt binders of conventional hot mix asphalt mixtures (HMA) containing recycled asphalts (RAS and /or RAP) and/or recycling agents and their cracking potential. The molecular size and structure of asphalt components undergo large changes during its exposure to environmental factors, which affects its physical properties. Gel permeation chromatography (GPC) was used to study the molecular size distribution and Fourier transform infrared spectroscopy (FTIR) was used to study the extent of oxidation (aging) changes in the asphalt binders. The cracking potential of 15 asphalt mixtures was evaluated using the Semi Circular Bend Test (SCB) test procedure.
Format:

PDF
Download URL:

https://rosap.ntl.bts.gov/view/dot/66188/dot_66188_DS1.pdf
File Type:

[PDF - 167.11 KB]
Collection(s):

US Transportation Collection
Main Document Checksum:

urn:sha256:e5e00d8a29890c6c1407f2ffa34f74c532eb0eefb063e4ff8bcc94bf3fede293

File Language:

English

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