| Title | Manganese-modified asphalts : chemistry of the curing reaction, its effect on properties, and evidence for manganese inactivation following cure |
|---|---|
| Record ID | 33757 |
| Personal Name Creator |
Petersen, J. Claine; Plancher, Henry |
| Source | v, 47 p. : ill. |
| Corporate Creator | University of Wyoming Research Corporation. Western Research Institute |
| Corporate Contributor |
United States. Federal Highway Administration; United States. Department of Energy; Chemkrete Technologies, Inc. |
| Publisher | United States. Federal Highway Administration |
| Publication Date | 19860600 |
| Language | English |
| 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. |
| Rosap ID | dot:917 |
| Rosap URL | https://rosap.ntl.bts.gov/view/dot/917 |
| TRT Terms | Reactions in asphalt; Manganese; Asphalt mixtures |
| Classification | NTL - HIGHWAY/ROAD TRANSPORTATION - Pavement Management and Performance |
| Geographical Coverage |
United States |
| TRIS Online Accession No |
461932 |
| Contract Number | DTFH61-82-F-30111; OTFH61-82-F-30111 |
| Report Number | FHWA-RD-86-152 |
| Availability | Federal Highway Administration |
| Resource type | Tech Report |
| URL | https://ntlrepository.blob.core.windows.net/lib/33000/33700/33757/FHWA-RD-86-152.pdf |
| Format | |
| Database | NTL Digital Repository |