ACTUAL EXPERIENCE REGARDING THE CHIPPING OF CEMENT CONCRETE

The technique of inserting chippings in fresh cement concrete, developed and perfected by the Belgian Road Research Center, is one of the Techniques for achieving, at the time of construction, a rough microtexture and a coarse macrotexture, which are indispensable for obtaining a high degree of skid resistance, even at high speed, on wet pavements. The experimental sections (about 100,000 sq m (120,000 sq yds) at the present time) have shown, on the one hand, the efficiency and durability of the process and, on the other hand, have contributed to the development of a chipping machine, presently capable of carrying out work on fixed forms. With a view to the application of the process on a large scale within a short period of time, the acquired experience has permited the formulation of provisional recommendations for the use of those designing and understanding such work. Indeed, in order to be done successfully, chipping, like any surface treatment, requires particular attention in regard to the composition and the laying of the concrete, notably an axcellent initial profile, as well as the choice and application of the chipping stones. Lastly, chipping permits the use of polishable stones in the concrete mass, giving an indication of new perspectives, for those regions having little or nothing in the way of stones with good resistance to polishing, in the field of the conception of non-skid cement concrete pavements. /Author/

Media Info

  • Media Type: Print
  • Features: Figures; Photos; References; Tables;
  • Pagination: pp 90-94
  • Monograph Title: Skidding Accidents: Ancillary Papers
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00163942
  • Record Type: Publication
  • ISBN: 0309025745
  • Report/Paper Numbers: Proceeding, HS-021 395
  • Files: TRIS, TRB
  • Created Date: Oct 13 1977 12:00AM