PERFORMANCE OF WEARING COURSES OF THE IN-SITU MIXING TYPE

COMPARTAMIENTO EN SERVICIO DE CARPETAS ASFALTICAS TIPO MEZCLA EN SITIO

A high percentage of the highway network depending from the Provincial Highway Bureau of Mendoza uses an asphaltic layer of the in-situ mixing type for wearing courses. The results are highly satisfactory, and the economical advantages resulting from its use have determined its application on highly traffic roads. Some failures led to an investigation to limit application ranges, and a re-examination of current specifications for this type of work. Paved sections showing satisfactory results with ages comprised between 1 and 8 years were analyzed, comparing them with some others where results were not as expected. The data show the convenience of reducing asphalt contents with traffic increase, and at the same time the possibility of increasing percentages of aggregates finer than no 200 mesh, verification that extends the range of useful materials. At the same time, it was determined that bitumen performance in the mixture is not identical to that in conventional asphaltic mixtures, as very low asphalt content shows satisfactory performance. In a general way, but specially in these cases, priming has a fundamental importance, and its maintainence insured good pavement conditions for years. For the covering abstract of the conference, see IRRD Abstract No. 207931. /TRRL/

  • Publication Date: 1971

Language

  • Spanish

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00082762
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Report/Paper Numbers: Conf Paper
  • Files: ITRD, TRIS
  • Created Date: Jul 24 1975 12:00AM