CONSUMPTION OF CRUSHED ROCK FOR MACADAM ROAD BASE

AATGAANGEN AV KROSSAT BERG FOER BERGOEVERBYGGNAD

A FIELD INVESTIGATION WAS PERFORMED IN ORDER TO FIND OUT THE TRUE AMOUNTS OF CRUSHED ROCK USED IN MACADAM ROAD BASES. THE FRACTIONS STUDIED WERE 75 TO 200 MM AND 25 TO 75 MM. THE AMOUNTS USED FOR FINAL ADJUSTMENT, 25 TO 75 MM, WERE NOT INCLUDED. THE MEASURING METHODS WERE WEIGHING OF THE ROCK THAT WAS USED ON CHOSEN SECTIONS AND CALCULATION OF THE CORRESPONDING BASE THICKNESS BY LEVELLING. THE TOTAL AMOUNT OF ROCK IS EXPRESSED IN RELATION TO THE BASE THICKNESS IN TERMS OF TON PER SQ. METRE AND TON PER ROAD-METRE. RELATIONSHIPS FOR THE TWO FRACTIONS MENTIONED ARE PRESENTED. THE INVESTIGATION ALSO INCLUDES AN ESTIMATION OF THE CONVERSION FACTOR BETWEEN THE THEORETICAL FIXED VOLUME AND THE THEORETICAL RESULTING VOLUME FOR THE CRUSHED ROCK PRODUCTS.

• Corporate Authors:

  Swedish National Road and Traffic Research Institute

  Drottning Kristinas Vaeg 25
  S-11428 Stockholm,   Sweden 
• Authors:
  • Sahlstroem, T
  • Winqvist, B
• Publication Date: 1973

Language

• Swedish

Media Info

• Features: Figures; Tables;
• Pagination: 23 p.

Subject/Index Terms

• TRT Terms: Base course (Pavements); Crushed rock; Grain size (Geology); Macadam; Measurement; Thickness; Volume; Weight
• Uncontrolled Terms: Base; Particle size distribution
• ITRD Terms: 4173: Crushed stone; 6136: Measurement; 6200: Particle size distribution; 2961: Roadbase; 5933: Thickness; 6468: Volume; 5485: Weight
• Subject Areas: Design; Geotechnology; Highways; Pavements; I22: Design of Pavements, Railways and Guideways; I36: Aggregates;

Filing Info

• Accession Number: 00080696
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Report/Paper Numbers: R&D Rpt.
• Files: ITRD, TRIS
• Created Date: Mar 26 1975 12:00AM