01124247

Component

https://doi.org/10.3141/2127-03

http://scholar.google.com...Ozer&publication_year=2009

Interface bonding between hot-mix asphalt (HMA) overlays and portland cement concrete (PCC) pavements is one of the most significant factors affecting overlay service life. In this study, accelerated pavement testing was performed to quantify the effects of tack coat type, tack coat application rate, and PCC surface texture on the interface bonding and overlay performance. This study builds on and validates previously completed laboratory tests where an HMA overlay was placed on top of existing PCC pavement composed of various surface textures including smooth, transverse tining, and milling. Asphalt emulsion SS-1hP and cutback asphalt RC-70 were applied at three residual application rates, 0.02, 0.04, and 0.09 gal/yd²; asphalt binder PG 64-22 was applied at 0.04 gal/yd². In total, 25 test sections were constructed and loaded with the accelerated transportation loading assembly at the centerline. The tensile strains at the bottom of HMA, to quantify potential interface slippage, were measured for selective sections, and primary HMA rutting was analyzed for all sections. The study validated laboratory-determined optimum tack coat application rate, which provided the lowest interface strain and surface rutting in the field. Both PG 64-22 and SS-1hP showed better rutting resistance than RC-70. Milled PCC surface provided lower rutting than transverse-tined and smooth surfaces. The study also showed that PCC cleaning methods played an important role in the HMA–PCC interface bonding.

01147872

09-2759

English

pp 20-28

2009

Transportation Research Record: Journal of the Transportation Research Board

9780309142687

Print

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

Accelerated tests; Asphalt emulsions; Bituminous binders; Bituminous overlays; Bonding; Cleaning; Concrete pavements; Hot mix asphalt; Laboratory tests; Liquid asphalt; Milling; Pavement grooving; Portland cement concrete; Rutting; Tack coats; Tension; Test sections; Texture

Highways; Materials; Pavements; I22: Design of Pavements, Railways and Guideways; I31: Bituminous Binders and Materials

TRIS, TRB, ATRI

Jan 30 2009 7:07PM

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• Comparison of Low-Temperature Field Performance and Laboratory Testing of 10 Test Sections in the Midwestern United States
• Determining Representative Volume Elements of Asphalt Concrete Mixtures Without Damage
• Effective Temperature for Analysis of Permanent Deformation and Fatigue Distress on Asphalt Mixtures
• Evaluation and Application of Long-Lasting Asphalt Mixture
• Evaluation of Aspects of E* Test Using Hot-Mix Asphalt Specimens with Varying Void Contents
• Evaluation of Embedded Discontinuity Method for Finite Element Analysis of Cracking of Hot-Mix Asphalt Concrete
• Evaluation of Fatigue Models of Hot-Mix Asphalt Through Laboratory Testing
• Field and Laboratory Evaluation of Fracture Resistance of Illinois Hot-Mix Asphalt Overlay Mixtures
• Forensic Investigation and Validation of Energy Ratio Concept
• Identification of Parameters Related to Moisture Conditioning That Cause Variability in Modified Lottman Test
• Long-Term Monitoring of Noise and Frictional Properties of Three Pavements: Dense-Graded Asphalt, Stone Matrix Asphalt, and Porous Friction Course
• Low Design Temperatures of Asphalt Pavements in Dry–Freeze Regions: Predicting by Means of Solar Radiation, Transient Heat Transfer, and Finite Element Method
• Micromechanical Modeling of Hot-Mix Asphalt Mixtures by Imaging and Discrete Element Methods
• Precision of AASHTO TP62-07 for Use in Mechanistic-Empirical Pavement Design Guide for Flexible Pavements
• Refinement of Flow Number as Determined by Asphalt Mixture Performance Tester: Use in Routine Quality Control–Quality Assurance Practice
• Using Dynamic Modulus Test to Evaluate Moisture Susceptibility of Asphalt Mixtures
• Utilizing Small Samples to Predict Fatigue Lives of Field Cores: Newly Developed Formulation Based on Viscoelastic Continuum Damage Theory