A PRELIMINARY STUDY OF THE USE OF THE STIFFNESS CONCEPT IN MINIMIZING LOW TEMPERATURE TRANSVERSE CRACKING--INTERIM REPORT III
A review of pertinent literature on characterizing the rheological properties of bitumen at low-temperatures and relating these properties to the development of transverse cracks in flexible pavements. Various methods for direct and indirect determination of the "stiffness modulus" of asphalt binders and mixtures are discussed. The stiffness moduli of thirty-one Oklahoma asphalt cement samples and a series of asphalt concrete mixtures were determined. Results were compared with limiting values suggested in the literature. A majority of the tested asphalt cements and mixtures exceeded the recommended critical stiffness values. The results indicated that the stiffness modulus approach can be applied to Oklahoma materials to identify suitable low-temperature characteristics that will mitigate transverse pavement cracking. /Author/
- Sponsored by the Oklahoma Department of Transportation. Prepared in cooperation with DOT, FHWA.
Oklahoma State University, StillwaterDepartment of Civil Engineering
Stillwater, OK United States 74074
- Eldin, MSN
- Manke, P G
- Publication Date: 1976-3
- Pagination: 43 p.
- TRT Terms: Asphalt concrete; Asphalt mixtures; Binders; Bitumen; Flexible pavements; Low temperature; Pavement cracking; Rheological properties; Stiffness; Transverse cracking
- Subject Areas: Highways; Materials; Pavements;
- Accession Number: 00172057
- Record Type: Publication
- Source Agency: Federal Highway Administration
- Report/Paper Numbers: FHWA-OK-77-72-03-3 Intrm Rpt.
- Contract Numbers: 72-03-3
- Files: TRIS, USDOT
- Created Date: Mar 29 1978 12:00AM