RATIONAL DESIGN OF CONTINUOUS AND INTERMITTENT AGGREGATE GRADINGS FOR CONCRETE

The author has earlier presented an improved method for the design of aggregate gradings and demonstrated its applicability to the design of dense asphaltic compositions. Subsequently, further work has been done to confirm that both continuously graded and gap-graded bituminous mixes can be satisfactorily designed according to the method and to show that, for highway and airfield pavement surfacing purposes, certain principles governing skid resistance over a practical range of speeds can be incorporated into the design method. The current study describes the application of the method to the design of concrete mixes. For gap or intermittent gradings, the relevance of studies of interparticle voids is demonstrated with respect to critical ratios of entrance and occupation (measured for typical aggregates) and a newly defined term, the critical ratio of dilation. The influence of gradings, designed according to this rational method, on concrete workability and strength is discussed. Reference is also made to the design of pavement concrete mixes to meet the different requirements of skid resistance for low-speed and high-speed conditions on roads and airfields.

Media Info

  • Media Type: Print
  • Features: Figures; References; Tables;
  • Pagination: pp 1-16
  • Monograph Title: Grading of concrete aggregates
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00159543
  • Record Type: Publication
  • ISBN: 0309021723
  • Files: TRIS, TRB
  • Created Date: Sep 20 1977 12:00AM