PRODUCTION OF BINDERS FROM CELLULOSIC WASTES
Several cellulosic and man-made polymeric substances were treated by pyrolysis. The object was to examine them as potential sources of asphalt substitutes or extenders and as potential sources for filler materials. From the initial studies a technique, which the authors call, 'Inverted' pyrolysis seemed to be the most promising. Two major designs for the 'Inverted' pyrolysis systems were developed and scaled up to accommodate approximately 100 gallon batch charges. The first design produced a higher percentage of binder, based on initial sawdust input, but required an external heat source and the removal of the 'char' residue. The second design, even though producing a lower percentage yield, supplied its own energy by combustion of the char and produced only small amounts of ash. The second design is believed to be the more practical of the two since sufficient 'excess' energy appears to be produced that with proper engineering the entire system could be energy self-supporting with the exception of normal electrical controls and flow devices. Due to the use of the second, energy saving, system the production of filler materials was dropped from the project objectives. About 20 gallons of the final binder material were produced. The binder was used for chemical and physical testing as well as investigating the improvement of its quality through blending with other substances and by further chemical and physical processes.
- Sponsored in part by Arkansas State Highway and Transportation Dept., Little Rock.
Arkansas State University, State UniversityDepartment of Chemistry
State University, AR United States
Little Rock, AR United States 72203
Washington, DC United States 20590
- Jimerson, G D
- Wyatt, W V
- Publication Date: 1980-5
- Pagination: 76 p.
- TRT Terms: Asphalt; Binders; Blends; Cellulose; Design; Equipment; Performance evaluations; Pyrolysis; Sawdust
- Uncontrolled Terms: Design criteria
- Old TRIS Terms: Constitution materials; Substitutes
- Subject Areas: Design;
- Accession Number: 00343718
- Record Type: Publication
- Source Agency: National Technical Information Service
- Report/Paper Numbers: FHWA-AR-81-37, Final Report
- Files: NTIS, USDOT, STATEDOT
- Created Date: Oct 28 1981 12:00AM