00968509

Component

https://doi.org/10.3141/1860-04

http://scholar.google.com...artz&publication_year=2003

The in situ moduli of unbound pavement materials vary on a seasonal basis as a function of temperature and moisture conditions. The development of empirical models to predict backcalculated pavement layer moduli as a function of moisture content and stress state is addressed. The work is based on data collected via the Seasonal Monitoring Program of the Long-Term Pavement Performance Program. This research identified fundamental incompatibilities between the stress states computed from layer moduli backcalculated using linear layered-elastic theory and those used in laboratory resilient modulus testing. Important implications of this finding are that (a) application of laboratory-derived constitutive model coefficients in combination with stress states computed using linear layered-elastic theory may yield inaccurate stress-dependent modulus values and (b) meaningful advances in the state of the art for backcalculation of pavement layer moduli cannot be achieved without addressing the inaccuracies and limitations inherent in the use of linear layered-elastic theory to model nonlinear pavement response. Other important findings include the following: (c) variation in moisture content is not always the most important factor causing seasonal variations in pavement layer moduli and (d) a constitutive model form suitable for approximately incorporating the stress and moisture sensitivity of layer moduli backcalculated using linear layered-elastic procedures for practical design purposes is identified.

This paper appears in Transportation Research Record No. 1860, Pavement Assessment, Monitoring, and Evaluation 2003.

English

p. 33-40

2003

Transportation Research Record

0309085977

Figures (5) ; References (8) ; Tables (2)

Backcalculation; Modulus of resilience; Moisture content; Pavement layers; Stresses

Long-Term Pavement Performance Program

Linear layered elastic theory; Seasonal variations

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

TRIS, TRB, ATRI

Jan 8 2004 12:00AM

• ACCEPTABILITY OF PAVEMENT ROUGHNESS ON URBAN HIGHWAYS BY DRIVING PUBLIC
• ANALYSIS PROCEDURE FOR LOAD-ZONING PAVEMENTS
• APPLICATION OF WAVELETS IN DETECTION OF CAVITIES UNDER PAVEMENTS BY SURFACE WAVES
• APPROACHES TO EVALUATION OF PROFILER ACCURACY
• COHEN'S WEIGHTED KAPPA STATISTIC IN QUALITY CONTROL-QUALITY ASSURANCE PROCEDURES: APPLICATION TO NETWORK-LEVEL CONTRACT PAVEMENT SURFACE CONDITION SURVEYS IN BRITISH COLUMBIA, CANADA
• CURRENT PRACTICE OF PORTLAND CEMENT CONCRETE PAVEMENT TEXTURING
• DETECTION OF NONRESILIENT BEHAVIOR IN PAVEMENTS WITH A FALLING-WEIGHT DEFLECTOMETER
• DIRECT METHOD FOR EVALUATING STRUCTURAL NEEDS OF FLEXIBLE PAVEMENTS WITH FALLING-WEIGHT DEFLECTOMETER DEFLECTIONS
• DISCRETE AND CONTINUOUS DEFLECTION TESTING OF RUNWAYS AT HARTSFIELD ATLANTA INTERNATIONAL AIRPORT, GEORGIA
• FEASIBILITY OF BACKCALCULATION OF NONLINEAR FLEXIBLE PAVEMENT LAYER PARAMETERS FROM NONDESTRUCTIVE TESTING
• FRICTION TESTING METHOD FOR OPEN-GRATED STEEL BRIDGE DECKS
• IMPLEMENTATION OF AUTOMATED NETWORK-LEVEL CRACK DETECTION PROCESSES IN MARYLAND
• IMPLEMENTATION OF NEW RIDE QUALITY SPECIFICATION IN MARYLAND: INCENTIVE-BASED PROFILE SPECIFICATION
• NETWORK PAVEMENT EVALUATION WITH FALLING-WEIGHT DEFLECTOMETER AND GROUND-PENETRATING RADAR
• PAVEMENT SURFACE MACROTEXTURE MEASUREMENT AND APPLICATIONS
• PREDICTION OF REMAINING LIFE OF ASPHALT PAVEMENT WITH FALLING-WEIGHT DEFLECTOMETER MULTILOAD-LEVEL DEFLECTIONS
• SMOOTH ENOUGH? ESTIMATED ROUGHNESS ON ROADS WITH LOW INTERNATIONAL ROUGHNESS INDEX VALUES
• USING THE ASPHALT PAVEMENT LAYER CONDITION ASSESSMENT PROGRAM: CASE STUDIES
• VARIATION OF PAVEMENT SMOOTHNESS BETWEEN ADJACENT LANES: IMPLICATIONS FOR PERFORMANCE-BASED CONTRACTING
• VISCOELASTIC, VISCOPLASTIC, AND DAMAGE MODELING OF ASPHALT CONCRETE IN UNCONFINED COMPRESSION