NEW TRENDS IN THE USE OF GRANULATED SLAGS IN ROAD CONSTRUCTION /IN FRENCH/
SAND-GRAVEL-SLAG AND SAND-SLAG ARE DEFINED AS MIXTURES PREPARED IN THE MIXING PLANT WITH A HIGH PROPORTION OF FRESHLY MANUFACTURED GRANULATED SLAG ACTIVATED WITH FAT LIME. THE TREATMENT OF PAVEMENT LAYER AGGREGATES WITH BLAST-FURNACE SLAG MIXTURES RESULTS IN HIGH HOMOGENEITY DUE TO THE HIGH PROPORTION OF BINDER, GREAT ACCURACY IN THE GRADING AND ANGULARITY OF THE AGGREGATE, IMPERVIOUSNESS TO WATER AND FROST, VERY SLOW SETTING RATE DURING EARLY AGE, AND PROGRESSIVE HARDENING. A REVIEW IS PRESENTED OF THE VARIOUS PARAMETERS WHICH INFLUENCE THE COMPRESSIVE AND TENSILE STRENGTH OF THE MIXTURES: PROPORTIONING AND QUALITY OF GRANULATED SLAG, MINERALOGICAL COMPOSITION AND GRADING OF AGGREGATES, PROPORTIONING AND QUALITY OF THE FAT LIME, CURING TIME AND TEMPERATURE, AND DENSITY AND INTENSITY OF COMPACTION. THE TWO BASIC QUALITIES OF TREATMENT PAVEMENT LAYERS: HOMOGENEITY AND COMPACTION ARE EMPHASIZED TOGETHER WITH THE CONDITIONS NECESSARY FOR OBTAINING THEM: GOOD GRADING CURVE, SMALL MAXIMUM DIMENSION, ADEQUATE ANGULARITY AND HARDNESS OF THE SAND-GRAVEL, SELECTION OF GRANULATED SLAG WITH GOOD HYDRAULIC PROPERTIES, HIGH-QUALITY FAT LIME, TYPE OF MIXING PLANT AND WELL EQUIPPED COMPACTION PLANT. SOME TECHNICAL AND ECONOMIC RESULTS ARE QUOTED. /A/LCPC/RRL/
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Supplemental Notes:
- No 242, pp 209-232, 27 FIG
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Authors:
- Prandi, M E
- Publication Date: 1968-2
Media Info
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Serial:
- Annales de l'Institut Tech du Batiment Travaux Pub
- Publisher: Societe de Diffusion de Tech du Bat et de Trav Pub
Subject/Index Terms
- TRT Terms: Aggregate gradation; Aggregates; Binders; Blast furnaces; Calcium oxide; Compaction; Compressive strength; Concrete hardening; Frost; Granulated slag; Gravel; Hardness; Homogeneity; Mineralogy; Proportioning; Road construction; Sand; Setting (Concrete); Slag; Tensile strength
- Uncontrolled Terms: Setting time
- Old TRIS Terms: Grading (By size)
- Subject Areas: Geotechnology; Highways;
Filing Info
- Accession Number: 00217685
- Record Type: Publication
- Source Agency: Road Research Laboratory /UK
- Files: TRIS
- Created Date: Oct 13 1970 12:00AM