PARTICLE INTERFERENCE AND THE WORKABILITY OF CONCRETE

SELECTING SUITABLE PROPORTIONS FOR CONCRETE MIXTURES USUALLY INVOLVES THE DETERMINATION OF THE COARSE AGGREGATE CONTENT, THE WATER-CEMENT RATIO TO GIVE AN ADEQUATE STRENGTH OR DURABILITY, AND THE CEMENT CONTENT TO GIVE AN ADEQUATE WORKABILITY. IT IS THE FIRST ITEM ONLY, THE DETERMINATION OF THE COARSE AGGREGATE CONTENT, WHICH IS CONSIDERED HERE. VARYING THE COARSE AGGREGATE CONTENT WHILE THE WATER-CEMENT RATIO AND CEMENT CONTENT ARE MAINTAINED CONSTANT INDICATES THAT THE CONCRETE ACHIEVES MAXIMUM WORKABILITY AT A PARTICULAR OPTIMUM VALUE. IT IS EVIDENT THAT CONCRETES WHICH CONTAIN THE OPTIMUM COARSE AGGREGATE CONTENT MAKE THE MOST ECONOMICAL USE OF THE AVAILABLE MATERIALS. THIS PAPER IS CONCERNED WITH THE THEORIES OF INTERFERENCE AND THE RELIABLE PREDICTION OF THE OPTIMUM COARSE AGGREGATE CONTENT IN PROPORTIONING THE CONCRETE MIX. IT EXAMINES TWO EXISTING THEORIES AND SHOWS THAT THEY CAN EACH CONTRIBUTE TO A BETTER UNDERSTANDING OF THE FACTORS INVOLVED. IT CONCLUDES WITH A GENERAL DISCUSSION CONCERNING THE DIFFERENCES IN THE TWO THEORIES. /AUTHOR/

  • Supplemental Notes:
    • Vol 62,no 3,PP 369-372
  • Authors:
    • HUGHES, B P
  • Publication Date: 1966-3

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  • Accession Number: 00212378
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Aug 4 1994 12:00AM