EVALUATION OF THE GYRATORY COMPACTOR FOR USE IN DESIGNING ASPHALTIC CONCRETE MIXTURES

The primary objective of this study was to evaluate the gyratory kneading compactor and to investigate the possibilities and capabilities of this type of equipment. Curves were developed for six different asphaltic concrete mixes with varying compactive efforts and asphalt contents. These curves indicated that a wide range of compactive efforts can be applied by the gyratory compactor that would be a definite advantage over the Marshall impact hammer. Results showed that the optimum asphalt content can be obtained by means of the gyrographs, which indicate whether or not the asphalt content for a mix at a given compactive effort is excessive. Results of cores taken after 6 months of service showed that the void contents had decreased below the 75 blow laboratory design, indicating the need for a higher compactive effort in the laboratory, which may be beneficial in extending the service life of pavements.

Language

  • English

Media Info

  • Features: Appendices; Figures; Photos; Tables;
  • Pagination: 53 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00766263
  • Record Type: Publication
  • Report/Paper Numbers: Research Report No. 26, Final Report
  • Contract Numbers: 1(4)
  • Files: TRIS, USDOT, STATEDOT
  • Created Date: Jul 27 1999 12:00AM