MEASUREMENT AND INTERPRETATION OF THE ELASTIC COMPRESSIBILITY OF SUBGRADES AND ITS RELATION TO THE BEHAVIOR OF ASPHALT PAVEMENTS
A THEORETICAL INTERPRETATION IS PRESENTED OF THE RESILIENCE OF FLEXIBLE PAVEMENTS BY APPLYING GENERAL PHYSICAL LAWS PARTICULARLY IN REFERENCE TO THE BEHAVIOR OF THE GASEOUS PHASE OF A MATERIAL. THIS INTERPRETATION WAS ATTEMPTED BECAUSE OF A FREQUENCY OF ALLIGATOR CRACKINGS IN FLEXIBLE PAVEMENTS IN ARGENTINA. FROM THE INTERPRETATION OF THE RESILIENT PHENOMENA DEVELOPED, THE PRACTICAL CONCLUSION ARISING IS THE NECESSITY TO KEEP RESILIENT NON-CEMENTED LAYERS, UNDER SERVICE CONDITIONS, WITH THE HIGH DENSITIES AND MOISTURE CONTENTS WHICH CORRESPOND TO THE DRY ZONE OF THE MATERIALS. DETERMINATION METHODS ARE PRESENTED FOR EACH CASE. FOR PAVEMENTS IN SERVICE WHICH SHOW SIGNS OF ALLIGATOR CRACKING, OR ELSE EXCESSIVE ELASTIC DEFLECTIONS WHICH ALLOW PREDICTION OF ITS DEVELOPMENT, THE INTERPRETATION EXPOSED CONFIRMS THE COMMON PRACTICE OF BUILDING OVERLAYS WHICH CONTRIBUTE BY THEIR THICKNESS AND STIFFNESS A STRUCTURAL REINFORCEMENT THAT REDUCES THE VERTICAL STRESSES OVER THE RESILIENT LAYERS AND, THEREFORE, THE DEFLECTIONS OF THE STRUCTURE. THE ANALYSIS OF THE DELAYED-ELASTIC DEFLECTIONS, ACCORDING TO EQUATIONS DEVELOPED, ALLOWS ESTABLISHMENT OF THE EXISTENCE OF ONE OR MORE RESILIENT LAYERS WITHIN THE STRUCTURE OF A PAVEMENT WHOSE DRY DENSITY AND MOISTURE CONTENT CORRESPOND TO THE WET ZONE.
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Supplemental Notes:
- Preprint, pP 331-347, 7 FIG, 12 REF
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Authors:
- Ruiz, C
- Conference:
- Publication Date: 1967-8
Subject/Index Terms
- TRT Terms: Deflection; Elasticity (Mechanics); Flexible pavements; Moisture content; Overlays (Pavements); Pavement cracking; Pavements; Resilience (Materials); Stiffness; Subgrade (Pavements); Theory; Thickness
- Old TRIS Terms: Inservice; Pavement deflection
- Subject Areas: Geotechnology; Highways; Pavements;
Filing Info
- Accession Number: 00206714
- Record Type: Publication
- Files: TRIS
- Created Date: May 13 1994 12:00AM