00757489

Component

https://doi.org/10.3141/1639-10

http://scholar.google.com...dani&publication_year=1998

The structural response of jointed plain concrete pavement slabs was evaluated using data obtained from instrumented slabs. The instrumented slabs were a part of newly constructed jointed plain concrete overlay that was constructed on existing asphalt concrete pavement on I-70 in Colorado, near the Kansas-Colorado border. The instrumentation consisted of dial gauges for measuring curling deflections at the slab corner and longitudinal edge and surface-mounted strain gauges for measuring load strains at the longitudinal edge at midslab. The through-thickness temperature profiles in the pavement slabs were also measured at 30-min intervals during the field test. Analysis of the field data showed that the instrumented slabs had a considerable amount of built-in upward curling and that concrete slabs on a stiff base can act completely independent of the base or monolithically with the base, depending on the loading condition. The built-in upward curling of the slabs has the same effect as negative temperature gradients. These findings suggest that the effects of temperature gradients on the critical edge stresses may not be as great as previously thought and that the corner loading, in some cases, may produce more critical conditions for slab cracking. Another important finding of this study is that a physical bond between pavement layers is not required to obtain a bonded response from concrete pavements.

This paper appears in Transportation Research Record No. 1639, Recent Pavement Research Issues.

English

p. 94-101

1998

Transportation Research Record

0309065119

Figures (6) ; References (10) ; Tables (2)

Asphalt pavements; Concrete; Concrete overlays; Curling; Data analysis; Deflection; Field studies; Mathematical analysis; Measuring instruments; Slabs; Strain (Mechanics); Strain gages; Stresses; Structural analysis; Structural mechanics; Temperature gradients; Wheel loads

Edges; Field data; Structural response

Design; Highways; Pavements; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces

TRIS, TRB, ATRI

Dec 7 1998 12:00AM

• CONTINUOUS PROFILING OF RUNWAY AND TAXIWAY PAVEMENTS WITH ROLLING DYNAMIC DEFLECTOMETER AT DALLAS-FORT WORTH INTERNATIONAL AIRPORT
• CORRECTION OF FIELD SKID MEASUREMENTS FOR SEASONAL VARIATIONS IN TEXAS
• CRASH EXPERIENCE ON TINED AND CONTINUOUSLY GROUND PORTLAND CEMENT CONCRETE PAVEMENTS
• DYNAMIC ANALYSIS-BASED APPROACH TO DETERMINE FLEXIBLE PAVEMENT LAYER MODULI USING DEFLECTION BASIN PARAMETERS
• EFFECT OF ALLOWABLE THICKNESS VARIATION ON BACKCALCULATED MODULI (WITH DISCUSSION AND CLOSURE)
• EVALUATION OF SUPERLIGHT PAVEMENTS UNDER ACCELERATED TRAFFIC
• EXPERIMENTAL VERIFICATION OF RESILIENT DEFORMATION FOR GRANULAR SUBGRADES
• FATIGUE BEHAVIOR OF RUBBER-MODIFIED PAVEMENTS
• FIELD STUDY OF IN SITU SUBGRADE SOIL RESPONSE UNDER FLEXIBLE PAVEMENTS
• FRICTION AND SURFACE TEXTURE CHARACTERIZATION OF 14 PAVEMENT TEST SECTIONS IN GREENVILLE, NORTH CAROLINA
• IN SITU EVALUATION OF LAYER STIFFNESSES OF AIRPORT PAVEMENTS BY CROSSHOLE SEISMIC TESTS
• MECHANISTIC-EMPIRICAL APPROACH TO ASSESSING RELATIVE PAVEMENT DAMAGE
• PAVEMENT DISTRESS UNDER ACCELERATED TRAFFICKING
• PREDICTION OF LAYER MODULI FROM FALLING WEIGHT DEFLECTOMETER AND SURFACE WAVE MEASUREMENTS USING ARTIFICIAL NEURAL NETWORK
• RELATING LABORATORY AND FIELD MODULI OF TEXAS BASE MATERIALS
• TIME-DEPENDENT PERMANENT DEFORMATION MODELS FOR ASPHALTIC MIXTURES