01333151

Component

https://doi.org/10.3141/2208-06

http://scholar.google.com...+Kim&publication_year=2011

Warm-mix asphalt (WMA) technology is developed by lowering the binder melting point, which may cause WMA to be weak against rutting at high service temperatures. Much research has been done on the high-temperature characteristics of WMA mixtures, but the low-temperature fracture behavior that leads to cracking has not been well evaluated. Because WMA is produced at lower temperatures with a lower aggregate heating, the behavior at the interface where the binder is coating aggregate is in question at low temperatures. In this study, 13-mm, dense-grade WMA mixtures were produced by using WMA binders. Beam specimens were prepared for fracture toughness (K sub IC) evaluation at −20°C by a three-point bending test. The results and analyses revealed that the K sub IC values of WMA mixtures at −20°C were similar to or better than those of HMA mixtures, even though they were produced at temperatures 30°C or 40°C lower than HMA mixtures.

01356747

11-2328

English

pp 40-47

2011

Transportation Research Record: Journal of the Transportation Research Board

9780309167390

Print

Figures (8) ; Photos (2) ; References (17) ; Tables (3)

Asphalt concrete; Asphalt mixtures; Bituminous binders; Cracking; Dense graded aggregates; Fracture properties; Low temperature; Warm mix paving mixtures

Highways; Materials; Pavements; I31: Bituminous Binders and Materials

TRIS, TRB, ATRI

Feb 17 2011 6:08PM

• Effect of Mineral Filler Characteristics on Asphalt Mastic and Mixture Rutting Potential
• Effects of Recycled Asphalt Pavement Amounts on Low-Temperature Cracking Performance of Asphalt Mixtures Using Acoustic Emissions
• Estimating the Effect of Recycled Asphalt Pavements and Asphalt Shingles on Fresh Binder, Low-Temperature Properties Without Extraction and Recovery
• Fatigue Evaluation of Warm-Mix Asphalt Mixtures: Use of Uniaxial, Cyclic, Direct Tension Compression Test
• Full-Scale Structural Evaluation of Fatigue Characteristics in High Reclaimed Asphalt Pavement and Warm-Mix Asphalt
• Hot-Mix Asphalt That Contains Nickel Slag Aggregate: Laboratory Evaluation of Use in Highway Construction
• Influence of Production Temperature and Aggregate Moisture Content on the Initial Performance of Warm-Mix Asphalt
• Novel Moisture-Conditioning Method for Adhesive Failure of Hot- and Warm-Mix Asphalt Binders
• Performance Characteristics of Thin-Lift Overlay Mixtures: High Reclaimed Asphalt Pavement Content, Recycled Asphalt Shingles, and Warm-Mix Asphalt Technology
• Performance Evaluation of Asphalt Mixtures with High Recycled Asphalt Pavement Content
• Practical Method to Understand the Effect of Aggregate Drying on the Moisture Content of Hot-Mix Asphalt
• Rutting Resistance of Asphalt Concrete Mixtures That Contain Recycled Asphalt Pavement
• Use of Data from Specific Pavement Studies Experiment 5 in the Long-Term Pavement Performance Program to Compare Virgin and Recycled Asphalt Pavements