00756294

Component

https://doi.org/10.3141/1629-14

https://scholar.google.co...Epps&publication_year=1998

Low-temperature cracking is a major distress mode in Alaskan pavements because of the extreme temperature conditions - which range, in some instances, from about -50 deg C in winter to more than 40 deg C in summer. The use of asphalt modifiers in Alaskan pavements occurred over the past 15 years. These modifiers include Styrene-Butadiene-Styrene polymers, Styrene-Butadiene-Rubber polymers, ULTRAPAVE, and CRM [both the dry process (PlusRide) and the wet process]. Field observations and laboratory studies in Alaska and elsewhere indicate that the use of these modifiers would improve the low-temperature cracking resistance of pavements. The degree to which these modifiers provide beneficial effects for Alaskan pavements needs to be evaluated. The objectives of this research were (1) To characterize asphalt and polymer modified asphalt from a number of selected sites using Superpave PG grading system and to conduct thermal stress restrained specimen tests (TSRST) and Superpave IDT laboratory tests on field specimens; (2) To compare low-temperature cracking performance using field surveys; (3) To verify the applicability of the Superpave thermal cracking model (TCMODEL) and other available models for predicting low temperature cracking; and (4) To recommend guidelines for predicting minimum pavement temperatures in Alaska. Results of this study indicate, in general, significant improvement in low-temperature cracking resistance when polymer modifiers are used. Comparisons between predicted and observed low-temperature cracking using available crack propagation models, including Superpave TCMODEL, were poor. An improved regression model was developed using minimum air temperature, TSRST fracture temperature and strength, and pavement age to fit the observed field data for both conventional and polymer modified sections.

This paper appears in Transportation Research Record No. 1629, Design and Rehabilitation of Pavements 1998.

English

p. 117-126

1998

Transportation Research Record

0309064740

Figures (9) ; References (33) ; Tables (7)

Age; Asphalt pavements; Asphalt rubber; Crumb rubber; Field studies; Forecasting; Fracture properties; Guidelines; Laboratory tests; Low temperature; Mathematical models; Pavement cracking; Polymer asphalt; Regression analysis; Specimens; Superpave; Surface temperature; Tension tests; Thermal stresses

Field data; Indirect tensile test; Modifiers

Alaska

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

TRIS, TRB

Nov 24 1998 12:00AM

• ASPHALT-TREATED PERMEABLE BASE: LABORATORY TESTING, PERFORMANCE, AND PREDICTIONS
• AXLE LOAD DISTRIBUTION CHARACTERIZATION FOR MECHANISTIC PAVEMENT DESIGN
• AYMA: MECHANISTIC PROBABILISTIC SYSTEM TO EVALUATE FLEXIBLE PAVEMENT PERFORMANCE (WITH DISCUSSION AND CLOSURE)
• CALIBRATION OF MECHANISTIC-EMPIRICAL RUTTING MODEL FOR IN-SERVICE PAVEMENTS
• CALIBRATION OF PERFORMANCE MODELS FOR JOINTED PLAIN CONCRETE PAVEMENTS USING LONG-TERM PAVEMENT PERFORMANCE DATABASE
• CHARACTERIZATION OF CLAYEY SUBGRADE MATERIALS FOR MECHANISTIC DESIGN OF FLEXIBLE PAVEMENTS
• CONCEPT FOR MECHANISTIC-BASED PERFORMANCE MODEL FOR FLEXIBLE PAVEMENTS
• CRACKING CHARACTERISTICS OF MODEL CONTINUOUSLY REINFORCED CONCRETE PAVEMENTS
• DEVELOPMENT OF MECHANISTIC-EMPIRICAL PAVEMENT DESIGN IN MINNESOTA
• EFFECTS OF SPOT DIAMOND GRINDING ON PERFORMANCE OF PORTLAND CEMENT CONCRETE PAVEMENTS
• EVALUATION OF MECHANISTIC-EMPIRICAL PERFORMANCE PREDICTION MODELS FOR FLEXIBLE PAVEMENTS
• EVERFE: RIGID PAVEMENT THREE-DIMENSIONAL FINITE ELEMENT ANALYSIS TOOL
• INTEGER PROGRAMMING OF MAINTENANCE AND REHABILITATION TREATMENTS FOR PAVEMENT NETWORKS
• MECHANICS OF SMALL UTILITY CUTS IN URBAN STREET PAVEMENTS: IMPLICATIONS FOR RESTORATION
• MECHANISTIC EVALUATION OF TEST DATA FROM LONG-TERM PAVEMENT PERFORMANCE JOINTED PLAIN CONCRETE PAVEMENT TEST SECTIONS
• MECHANISTIC-BASED MODEL FOR PREDICTING REFLECTIVE CRACKING IN ASPHALT CONCRETE-OVERLAID PAVEMENTS
• MODELING PAVEMENT RESPONSE TO VEHICULAR TRAFFIC ON OHIO TEST ROAD
• NONLINEAR ANALYSIS OF JOINTED CONCRETE PAVEMENTS
• NUMERICAL MODELING OF CONTINUOUSLY REINFORCED CONCRETE PAVEMENT SUBJECTED TO ENVIRONMENTAL LOADS
• PAVEMENT DISTRESS AND SELECTION OF REHABILITATION ALTERNATIVES: MICHIGAN PRACTICE
• POTENTIAL SAFETY COST-EFFECTIVENESS OF TREATING RUTTED PAVEMENTS
• STUDY OF LOAD TRANSFER PARAMETER IN AASHTO DESIGN GUIDE FOR CONCRETE PAVEMENT
• STUDY ON THERMAL STRESSES IN CONTINUOUSLY REINFORCED CONCRETE PAVEMENT
• THREE-DIMENSIONAL FINITE ELEMENT STUDY ON EFFECTS OF NONLINEAR TEMPERATURE GRADIENTS IN CONCRETE PAVEMENTS (WITH DISCUSSION)
• TRANSVERSE CRACKING DISTRESS IN LONG-TERM PAVEMENT PERFORMANCE JOINTED CONCRETE PAVEMENT SECTIONS
• VALIDATION OF THREE-DIMENSIONAL FINITE ELEMENT MODELING TECHNIQUE FOR JOINTS IN CONCRETE AIRPORT PAVEMENTS