Manganese-modified asphalts : chemistry of the curing reaction, its effect on properties, and evidence for manganese inactivation following cure

Petersen, J. Claine; Plancher, Henry; University of Wyoming Research Corporation. Western Research Institute

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Manganese-modified asphalts : chemistry of the curing reaction, its effect on properties, and evidence for manganese inactivation following cure

1986-06-01
By Petersen, J. Claine ; Plancher, Henry

[PDF-2.03 MB]

English

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Creators:

Petersen, J. Claine ; Plancher, Henry

Petersen, J. Claine ; Plancher, Henry Less -
Corporate Creators:

University of Wyoming Research Corporation. Western Research Institute
Corporate Contributors:

United States. Federal Highway Administration ; United States. Dept. of Energy ; Chemkrete Technologies, Inc.

United States. Federal Highway Administration ; United States. Dept. of Energy ; Chemkrete Technologies, Inc. Less -
Subject/TRT Terms:

[+]

Asphalt Mixtures Manganese Reactions In Asphalt
Publication/ Report Number:

FHWA-RD-86-152
Resource Type:

Tech Report
Edition:

Final report
Corporate Publisher:

United States. Federal Highway Administration
NTL Classification:

NTL-HIGHWAY/ROAD TRANSPORTATION-Pavement Management and Performance
Abstract:

The chemical reactions and reaction kinetics of asphalt modified with a patented modifier supplied by Chemkrete Technologies, Inc. were investigated. The modifier, a manganese-carboxylic acid complex, has been shown to cause a rap; d react; on with atmospheric oxygen when the modified asphalt is exposed as thin films. This reaction produces paving mixtures with increased stiffness and tensile strength. In the present study, a good correspondence was found between the manganese-induced oxidation reaction (cure) and the increase in asphalt viscosity. The rapid, modifier-induced reaction with oxygen and the corresponding rapid increase in viscosity ceased following cure. The incremental increase in viscosity on cure was found to be governed by the asphalt oxidation chemistry, with the manganese modifier apparently being inactivated at the end of the cure by diketones formed during the manganese-catalyzed oxidation reaction. The chemistry of the manganese inactivation on cure was investigated in detail. Results of the study provide further confirmation for the mechanism of formation of anhydrides in asphalt.
Format:

PDF
Funding:

DTFH61-82-F-30111;OTFH61-82-F-30111
Collection(s):

Federal Highway Administration
Main Document Checksum:

[+]

urn:sha256:ef5670c0a6017236b8785fb24668935f5d7029d639c0bc82238ba607f45f647a
Download URL:

https://rosap.ntl.bts.gov/view/dot/917/dot_917_DS1.pdf
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Manganese-modified asphalts : chemistry of the curing reaction, its effect on properties, and evidence for manganese inactivation following cure

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