EARTH COMPACTION. IN DEPTH EFFICIENCY OF VIBRATING PLATES AND ROLLERS, AND INFLUENCE OF LAYER THICKNESS ON COMPACTION QUALITY

COMPACTAGE DES TERRASSEMENTS - EFFICACITE EN PROFONDEUR DE PLAQUES ET DE ROULEAUX VIBRANTS ET INFLUENCE DE L'EPAISSEUR DES COUCHES SUR LA QUALITE DU COMPACTAGE

A series of tests in excavation pits deals with the following: (1) influence of layer thickness on compaction quality for a given material and equipment; (2) in-depth efficiency of two heavy vibrating plates and of a compactor fitted with two vibrating pads. Comparison of the possibilities offered by vibrating plates and vibrating rollers; (3) use in earthworks of a mixed (vibrating-pneumatic) self-propelled roller; (4) possibilities of two vibrating self-propelled one-roller compactors recently put on the market; comparison with two rollers belonging to the same morphological category and recently tested under similar conditions. The criteria used for the comparison were: distribution of mean dry density for the whole compacted layer, minimum density at the bottom of the layer, their evolution as a function of the number of passes and distribution of the density as a function of depth; (5) the heavy self-propelled vibrating one-roller compactors tested facilitate the laying of fairly thick layers consisting of polluted granular material and of clean material; (6) for the mixed self-propelled roller, it is recommended not to exceed 60 cm for the thickness of granular material containing a fine plastic fraction compacted at wopn + 1%. Its optimum translation speed, when working on thick layers, does not exceed that of non-mixed vibrating rollers, e.g. 2 to 3 km/h; (7) as regards control, results confirm the necessity of controlling the moisture content of the materials, the thickness of the layers laid and the operational parameters of the compactors; (8) the report demonstrates that, in cases of difficult conditions, it is necessary to use high quality equipment if the compaction of embankment materials is to be as satisfactory as sought. /TRRL/

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  • Corporate Authors:

    Central Laboratory of Bridges & Highways, France

    75732 Paris,   France 
  • Authors:
    • Chaigne, P
    • Oczkowski, J
    • Franceschina, R
    • Quibel, A
  • Publication Date: 1977-10

Language

  • French

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00188258
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Report/Paper Numbers: Research Rpt LPC 70 Monograph
  • Files: ITRD, TRIS
  • Created Date: Mar 28 1979 12:00AM