Paving Asphalts: Chemical Composition, Oxidative Weathering, and Asphalt-Aggregate Interactions, Part II

Petersen, J. Claine; Dorrence, S. M.; Ensley, E. K.; Barbour, F. A.; Barbour, R. V.; Haines, W. E.; United States. Federal Highway Administration

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Paving Asphalts: Chemical Composition, Oxidative Weathering, and Asphalt-Aggregate Interactions, Part II

1974-06-01
By Petersen, J. Claine ; Dorrence, S. M. ; Ensley, E. K. ; ...

[PDF-2.01 MB]

English

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Creators:

Petersen, J. Claine ; Dorrence, S. M. ; Ensley, E. K. ; Barbour, F. A. ; Barbour, R. V. ; ... More +

Petersen, J. Claine ; Dorrence, S. M. ; Ensley, E. K. ; Barbour, F. A. ; Barbour, R. V. ; Haines, W. E. Less -
Corporate Creators:

United States. Federal Highway Administration
Contributors:

Zenewitz, J. A.
Corporate Contributors:

Laramie Energy Research Center
Subject/TRT Terms:

[+]

Aggregates Asphalt Pavements Oxidation
Publication/ Report Number:

FHWA-RD-74-071
Resource Type:

Tech Report
Geographical Coverage:

United States
Contracting Officer:

Zenewitz, J. A.
Corporate Publisher:

United States. Federal Highway Administration
Abstract:

This report describes an interrelated study of the oxidation products formed in asphalt during the processing of road mixes and aging in the road and the interactions of asphalt and its oxidation products with aggregate to form the asphalt-aggregate adhesive bond. A method for the qualitative and quantitative determination of ketones, carboxylic acids, dicarboxylic anhydrides, and 2-quionolone types in asphalts was developed and applied to ten penetration-grade asphalts recovered from 11- to 13-year-old pavements. Carbonyl types strongly adsorbed on the aggregate surface were quantitatively determined. Independent studies identified ketones & dicarboxylic anhydrides as significant carbonyl-type oxidation products in asphalts. Evidence for the structural types of ketones and anhydrides in asphalts is given. Esters were not found in the asphalt oxidation products. Mineral surfaces and components naturally present in asphalt were both found to catalyze the oxidation of asphalt. Asphalt-aggregate interactions were studied by microcalorimetry which gave evidence of multilayer adsorption of asphalt molecules in the asphalt-aggregate interphase region. Further evidence for the orientation of molecules in the interphase region was provided through photo microscopic studies. The significance of the work to asphalt paving technology is discussed.
Format:

PDF
Collection(s):

Federal Highway Administration US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:1863b40e438014296d255334df958365078747740086321667c78f30890ab969
Download URL:

https://rosap.ntl.bts.gov/view/dot/41889/dot_41889_DS1.pdf
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Paving Asphalts: Chemical Composition, Oxidative Weathering, and Asphalt-Aggregate Interactions, Part II

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