| Title | Paving asphalts : reduction of oxidative hardening of asphalts by treatment with hydrated lime : a mechanistic study |
|---|---|
| Record ID | 33773 |
| Personal Name Creator |
Plancher, Henry; Green, E. L.; Petersen, J. Claine |
| Source | iv, 32 p. : ill. |
| Corporate Creator | Laramie Energy Research Center |
| Corporate Contributor |
United States. Federal Highway Administration |
| Publisher | United States. Federal Highway Administration |
| Publication Date | 19770400 |
| Language | English |
| Abstract | This study showed that lime treatment removes polar, viscosity-building components and reduces the susceptibility of the asphalt to laboratory oxidative hardening. The beneficial effects of lime treatment in reducing asphalt oxidative hardening were attributed to two synergistic effects: (1) lime reduces the formation of oxidation products by the removal of oxidation catalysts or promoters and (2) lime reduces the sensitivity of the asphalt to these oxidation products by removing polar molecules that would otherwise interact with the oxidation products to cause an increase in viscosity. Relationships were observed between polar functional group interactions and changes in asphaltene content and viscosity. |
| Rosap ID | dot:921 |
| Rosap URL | https://rosap.ntl.bts.gov/view/dot/921 |
| TRT Terms | Asphalt hardening; Asphalt additives; Calcium hydroxide |
| Classification | NTL - HIGHWAY/ROAD TRANSPORTATION - Pavement Management and Performance |
| Geographical Coverage |
United States |
| Contract Number | P.O. No. 6-3-0031; FCP Code 39A6-051 |
| Report Number | FHWA-RD-77-147 |
| Availability | Federal Highway Administration |
| Resource type | Tech Report |
| URL | https://ntlrepository.blob.core.windows.net/lib/33000/33700/33773/FHWA-RD-77-147.pdf |
| Format | |
| Database | NTL Digital Repository |