SURFACING COURSES - NORWAY
THIN WEARING COURSES ARE DISCUSSED AND DIVIDED INTO THREE GROUPS: (1) VERY THIN WEARING COURSES ACTING AS A KIND OF IMPROVED DUST-LAYER, (2) PERMANENT OR SEMI-PERMANENT WEARING COURSES, AND (3) TEMPORARY WEARING COURSES ON HEAVILY TRAFFICKED ROADS. MANY KINDS OF DUST-PREVENTING PROCEDURES WERE TRIED. ONE COMMON METHOD IS TO SPREAD A BITUMINOUS BINDER WITH THE AIM OF PENETRATING THE SURFACE AND BINDING THE DUST. THIS METHOD HAS OFTEN FAILED BECAUSE THE BINDER HAS NOT CREATED A CRUST STRONG ENOUGH TO STAND THE TRAFFIC. IT IS RECOMMENDED THAT THE BINDER CONTAIN AMINE AND THE GRAVEL MUST HAVE A SUITABLE GRADING CURVE INCLUDING A WANTED AMOUNT OF FILLER, RESULTING IN A DENSE, DURABLE CRUST OR CARPET. AN EXPERIMENTAL ROAD WAS CONSTRUCTED TO ATTEMPT TO DETERMINE A CONSTRUCTION METHOD TO SECURE THE CONSTANT, PROJECTED QUANTITY OF BINDER AND MINERAL AGGREGATES ON EACH SQUARE FEET. THE PERMANENT WEARING COURSES COMPRISED SURFACE COURSES OF A THICKNESS FROM ABOUT 2.5 TO 4 CM. THE BASE MUST HAVE SUFFICIENT BEARING CAPACITY AND CONSIST OF EITHER GRAVEL OR CRUSHED ROCK, MECHANICALLY STABILIZED. TEMPORARY WEARING COURSES ARE THIN - AROUND 3.5 CM THICKNESS. THIS WAS PLACED ON A BASE WHOSE UPPER LAYER CONSISTED OF ASPHALT STABILIZED CRUSHED ROCK, EITHER PENETRATED OR CENTRAL MIXED, AND A THIN LAYER OF LEAN ASPHALT CONCRETE. STAGE CONSTRUCTION IS DISCUSSED BECAUSE OF THE NECESSITY CAUSED BY INCREASING TRAFFIC AND AXLE-LOADS.
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Supplemental Notes:
- No Iii-15, PP 2-17, 7 FIG
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Authors:
- Brudal, H
- Publication Date: 1967
Media Info
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Serial:
- Perm Intl Assoc Road Congresses Proc
- Publisher: Xiiith Congress, Tokyo
Subject/Index Terms
- TRT Terms: Amines; Asphalt concrete; Bearing capacity; Binders; Bituminous materials; Construction management; Dust control; Experimental roads; Fillers (Materials); Flexible pavements; Gravel; Mineral aggregates; Soil stabilization; Thickness; Wearing course (Pavements)
- Uncontrolled Terms: Stage construction
- Old TRIS Terms: Bituminous stabilization; Flexible base pavements; Thickness design
- Subject Areas: Construction; Geotechnology; Highways; Maintenance and Preservation; Pavements;
Filing Info
- Accession Number: 00205536
- Record Type: Publication
- Files: TRIS
- Created Date: May 24 1994 12:00AM