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Title: Fracture Resistance of Warm-Mix Asphalt Concretes at Low Temperatures
Accession Number: 01479023
Record Type: Component
Availability: Transportation Research Board Business Office 500 Fifth Street, NW Abstract: The fracture resistance of warm mix asphalt (WMA) concrete was examined at low temperatures in comparison with hot mix asphalt (HMA). Three WMA additives (Evotherm, Pewo and Sasobit), two polymers (LVM and SBS), and one aggregate source were used to prepare 9 WMA mixtures and 3 HMA mixtures. The fracture toughness (KIC) was measured by a 3-point bending beam test at -5, -15, -20, -25 and -35℃. All mixtures showed KIC increase by temperature decrease, making a peak at -15℃ or -20℃, then decreased with further lowering temperatures due to differential thermal contraction. Most of WMA mixtures, showed higher KIC than HMA at severely low temperatures. It was found that the WMA mixtures were not more susceptible to brittle fractures than HMA at low temperatures, although they were produced at a relatively lower aggregate heating temperature.
Supplemental Notes: This paper was sponsored by TRB committee AFK30 Characteristics of Nonasphalt Components of Asphalt Paving Mixtures.
Monograph Title: Monograph Accession #: 01470560
Report/Paper Numbers: 13-1858
Language: English
Corporate Authors: Transportation Research Board 500 Fifth Street, NW Authors: Lee, Sung-JinPark, JiyongHong, Jun-PyoKim, Kwang WPagination: 20p
Publication Date: 2013
Conference:
Transportation Research Board 92nd Annual Meeting
Location:
Washington DC, United States Media Type: Digital/other
Features: Figures; Photos; References; Tables
TRT Terms: Subject Areas: Highways; Materials; Pavements; I31: Bituminous Binders and Materials
Source Data: Transportation Research Board Annual Meeting 2013 Paper #13-1858
Files: TRIS, TRB, ATRI
Created Date: Feb 5 2013 12:26PM
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