THE COMPACTION OF THICK, SINGLE LAYER ROADBASES MADE OF BITUMINOUS MIXTURE AND STABILIZING CONCRETE

THE AUTHOR GIVES EXAMPLES OF THE ECONOMIC USE OF DOUBLE VIBRATING ROLLERS FOR THE COMPACTION OF SINGLE-LAYER ROADBASES. THE DISADVANTAGES OF AN 18 CM THICK BITUMINOUS LAYER PUT DOWN IN THREE SECTIONS ARE DISCUSSED: THE NECESSITY FOR THREE ROLLING PROCEDURES; UNSATISFACTORY ADHESION BETWEEN THE THREE LAYERS; AND INSUFFICIENT TRANSFER OF THE HORIZONTAL SHEAR FORCES. THE LAYING OF THE 18 CM THICK BITUMINOUS COURSE IN ONE OPERATION SAVES MONEY, AND BECAUSE OF THE ABILITY OF THE LAYER TO STORE HEAT, ROLLING CAN TAKE PLACE WHEN OUTDOOR TEMPERATURES ARE LOW. THE HOMOGENEOUS STRUCTURE OF THE LAYER ALSO ENSURES GREATER RESISTANCE TO TRAFFIC LOADING. CORES TAKEN FROM A GERMAN MOTORWAY CONSTRUCTION SITE SHOW THAT WITH THREE PASSES OF VIBRATING ROLLERS, MARSHALL COMPACTION OF 101 PERCENT CAN BE OBTAINED. SIMILAR EXPERIENCE HAS BEEN OBTAINED WITH STABILIZING CONCRETE IN SPAIN AND KENYA. THE CONSTRUCTIONAL FEATURES OF THE DOUBLE VIBRATING ROLLERS USE ARE DESCRIBED. /TRRL/

• Authors:
  • Keufen
• Publication Date: 1972

Language

• English

Media Info

• Features: Figures;
• Pagination: p. 28-30
• Serial:
  • Bitumen, Terre, Asphalte, Peche u Verwardte Staffe
  • Volume: 23
  • Issue Number: 1

Subject/Index Terms

• TRT Terms: Bituminous mixtures; Cold weather construction; Compaction; Concrete; Delta functions; Rollers; Stabilizers; Subgrade (Pavements); Thickness; Vibratory equipment
• Uncontrolled Terms: Vibratory rollers
• Subject Areas: Construction; Highways;

Filing Info

• Accession Number: 00215677
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Files: TRIS
• Created Date: Jan 31 1974 12:00AM