01478745

Component

https://doi.org/10.3141/2370-16

http://scholar.google.com....+Wu&publication_year=2013

Since the late 1970s there has been much research performed to understand better the stripping phenomenon in asphalt mixtures. As a result, there have been changes in both materials and technology over the past 30 years to improve the resistance to moisture damage and the ability to test for performance under adverse moisture conditions. Because of the changes in materials and technologies related to the development and improvement of antistrip agents, this research study was conducted to evaluate the effectiveness of current antistrip agents used in hot-mix asphalt pavements. The objectives of this project were to construct a field test section that used three different antistrip agents in a conventional Superpave® surface mixture and conduct a series of laboratory performance test comparisons using different aging periods to make long-term comparisons of the effectiveness of hydrated lime, liquid additive, and warm-mix asphalt antistrip additives. Multiple freeze–thaw cycles of zero, one, five, and 10 cycles were used for a portion of the research study. The results showed that hydrated lime had the highest tensile strength and highest tensile strength ratio (TSR) values and was the only additive treatment to meet the minimum of 80% TSR for all freeze–thaw cycle combinations. Both five and 10 freeze–thaw cycles were significantly more discriminating for moisture susceptibility than one freeze–thaw cycle alone. Warm-mix asphalt treated mixtures produced low initial tensile strengths, but the strength of these mixtures improved with time.

01500280

13-5061

English

pp 128–136

2013

Transportation Research Record: Journal of the Transportation Research Board

9780309286886

Print

Figures (2) ; References (19) ; Tables (8)

Antistrip additives; Asphalt mixtures; Asphalt pavements; Calcium hydroxide; Freeze thaw durability; Hot mix asphalt; Moisture damage; Tensile strength

Highways; Materials; Pavements; I30: Materials

TRIS, TRB, ATRI

Feb 5 2013 12:58PM

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• Effect of Crumb Rubber Modifier Dissolution on Storage Stability of Crumb Rubber–Modified Asphalt
• Evaluation of Low-Temperature Properties of Asphalt Binders and Mixtures
• Evaluation of Rejuvenator’s Effectiveness with Conventional Mix Testing for 100% Reclaimed Asphalt Pavement Mixtures
• Evolution of the Crossover Modulus with Oxidative Aging: Method to Estimate Change in Viscoelastic Properties of Asphalt Binder with Time and Depth on the Road
• Experimental Evaluation of Shear Resistance of Improved Steel–Asphalt Interfaces
• First Observation of Blending-Zone Morphology at Interface of Reclaimed Asphalt Binder and Virgin Bitumen
• Linear and Nonlinear Viscoelastic Analysis of Bituminous Mortar
• Low-Temperature Oxidation Kinetics of Asphalt Binders
• Mechanism of Crumb Rubber Modifier Dissolution into Asphalt Matrix and Its Effect on Final Physical Properties of Crumb Rubber–Modified Binder
• Quality and Durability of Warm Rubberized Asphalt Cement in Ontario, Canada
• Recovery and Laboratory Testing of Asphalt Emulsion Residue: Application of Simple Aging Test and 4-mm Dynamic Shear Rheometer Test
• Recycled Asphalt Shingle Binder Characterization and Blending with Virgin Binders
• Revision and Further Validation of Surface Performance-Graded Specification for Chip Seal Binders
• Significance of Mixture Parameters on Binder Aging in Hot-Mix Asphalt Mixtures
• Simplification of Linear Amplitude Sweep Test and Specification Parameter