THE VIBREX - INFLUENCE OF THE PARAMETERS OF A VIBRATING ROLLER ON COMPACTION EFFICIENCY

LE VIBREX - INFLUENCE DES PARAMETRES D'UN ROULEAU VIBRANT SUR L'EFFICACITE DU COMPACTAGE

On an unstabilized, fully crushed, well-graded 0/20 quartzite gravel, compacted in a 30 cm layer, were tested approximately fifty vibrating rollers fitted to an experimental compacting machine: the vibrex. Each parameter: mass per unit of length of vibration generator, suspended mass/vibrating mass ratio, eccentric moment, vibration frequency, can be varied independently within a wide range of values. The results show that: (1) the mass ratio must be considered as a design parameter which does not have a marked influence on efficiency, but which must be taken into account for the selection of vibration parameters; (2) a higher value of the mass per unit of length of the generator would enable a high quality of average state of compaction to be reached more rapidly; (3) the higher theoretical amplitude when empty would enable a given requirement of compaction at the bottom of the layer to be reached more quickly; (4) vibration frequency is a parameter that can be of great importance vis-a-vis the efficiency of a machine. The relative influence of these different parameters was quantified, and a classification of the equipment was established on the basis of the quality it reaches when used at the same limit rate of efficiency, beyond which evolution in quality becomes lower than a given threshold. Some compactors reach their limit of efficiency in a "useful" number of passes, which varies from one machine to the next, in a relative range of approximately 1 to 2; but it was also observed that over the whole range of the rollers tested, very satisfactory qualities of compaction can be obtained with reduced values of the "useful" number of passes. (TRRL)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00852643
• Corporate Authors:

  Central Laboratory of Bridges & Highways, France

  75732 Paris,   France 
• Authors:
  • Quibel, A
  • Froumentin, M
  • Morel, G
• Publication Date: 1981-5

Language

• French

Media Info

• Features: Figures; Photos; References; Tables;
• Pagination: 125 p.
• Serial:
  • Publication of: Central Laboratory of Bridges & Highways, France
  • Publisher: Central Laboratory of Bridges & Highways, France
  • ISSN: 0085-2643

Subject/Index Terms

• TRT Terms: Compaction; Eccentricity; Economic efficiency; Engineering moments; Frequency (Electromagnetism); Gravel; Quality control; Quartzite; Research reports; Rollers; Testing; Tests; Torque; Vibration; Vibratory compaction; Vibratory equipment; Weight
• Uncontrolled Terms: Efficiency; Quality; Vibratory rollers
• Old TRIS Terms: Passes
• ITRD Terms: 3686: Compaction; 9017: Eccentric; 5911: Efficiency; 6997: Frequency; 5410: Moment (force); 9063: Quality; 8559: Research report; 6255: Test; 3692: Vibrating roller; 5558: Vibration; 5485: Weight
• Subject Areas: Construction; Economics; Geotechnology; Highways; Vehicles and Equipment; I51: Earthworks and Soil Drainage; I52: Construction of Pavements and Surfacings;

Filing Info

• Accession Number: 00348572
• Record Type: Publication
• Source Agency: Transportation Association of Canada (TAC)
• Report/Paper Numbers: LPC 101 Monograph
• Files: ITRD, TRIS
• Created Date: Mar 30 1982 12:00AM