Apparatus and method for production of asphalt pavement having high recycled asphalt content
US4868999A · kind A · utility
5Cited by
19References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 15, 1987 |
| Grant date | Sep 26, 1989 |
| Priority date | — |
| Expiry date | Sep 15, 2007 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF26B21/004
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An apparatus and method for manufacture of asphaltic pavement from recycled asphalt pavement (RAP) and virgin rock and asphaltic materials is shown and described. This method utilizes efficient and controlled heat from a recirculating air impingement air dryer for heating of the RAP to a first temperature prior to the RAP being mixed with high temperature rock which is supplied from a rotating drum heater. The mixture of rock and RAP may comprise as much as 80% RAP because the RAP is preheated piror to the RAP rock mixing step.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.