00728391

Component

https://doi.org/10.3141/1530-06

http://scholar.google.com...vell&publication_year=1996

The viability of using pyrolized carbon black (CBp) derived from waste tires as a reinforcing agent in asphalt mixtures was evaluated. Commercial carbon black (CB) has been previously shown to reduce the rutting resistance, temperature susceptibility, and cracking propagation potential of asphalt concrete. It was believed that CBp could produce similar benefits; this belief has been confirmed by this study. Different ratios of CBp and CB (5, 10, 15, and 20% by weight of asphalt) were blended with two grades of asphalt (AC-10 and AC-20). The Marshall method, the gyratory testing machine, the dynamic creep testing (confined), the indirect tensile testing, and the resilient modulus test were performed. The test results of CBp mixtures were compared with results of CB and conventional mixtures. The analyses of test results show that the typical performance of CBp-modified asphalt mixtures is improved with respect to commercial CB and conventional mixtures. The rutting potential and the temperature susceptibility can be reduced by the inclusion of CBp in the asphalt mixture. A CBp content of 10 to 15% by weight of asphalt is recommended for improvement of asphalt concrete.

This paper appears in Transportation Research Record No. 1530, Recycled Rubber, Aggregate, and Filler in Asphalt Paving Mixtures.

English

p. 43-50

1996

Transportation Research Record

030905902X

Figures (5) ; References (11) ; Tables (5)

Carbon black; Creep tests; Fracture mechanics; Frost susceptibility; Gyratory testing machines; Hot mix asphalt; Improvements; Marshall test; Modulus of resilience; Performance; Ruts (Pavements); Solid wastes; Temperature; Tension tests; Tires

Indirect tensile test; Pyrolyzed carbon black; Rut resistance; Scrap tires; Temperature susceptibility

Highways; Materials; Vehicles and Equipment; I31: Bituminous Binders and Materials

TRIS, TRB

Nov 7 1996 12:00AM

• AGGREGATE POLISHING RESISTANCE PRE-EVALUATION
• ARKANSAS EXPERIENCE WITH CRUMB RUBBER MODIFIED MIXES USING MARSHALL AND STRATEGIC HIGHWAY RESEARCH PROGRAM LEVEL I DESIGN METHODS
• BABBITT, MINNESOTA: CASE STUDY OF PRETREATED CRUMB RUBBER MODIFIED ASPHALT CONCRETE
• DEVELOPMENT OF RUBBER AND ASPHALT BINDERS BY DEPOLYMERIZATION AND DEVULCANIZATION OF SCRAP TIRES IN ASPHALT
• EFFECTS OF MINERAL FILLERS ON PROPERTIES OF STONE MATRIX ASPHALT MIXTURES
• EFFECTS OF SOME AGGREGATE AND FILLER CHARACTERISTICS ON BEHAVIOR AND DURABILITY OF ASPHALT PAVING MIXTURES
• EVALUATION SYSTEMS FOR CRUMB RUBBER MODIFIED BINDERS AND MIXTURES
• FEASIBILITY OF CRUMB RUBBER USE FOR ASPHALT PAVEMENT CONSTRUCTION
• HOT MIX ASPHALT RUBBER APPLICATIONS IN VIRGINIA
• INVESTIGATION OF STONE MATRIX ASPHALT MORTARS
• QUANTITATIVE ANALYSIS OF AGGREGATE BASED ON HOUGH TRANSFORM
• SHORT-TERM AND LONG-TERM AGING BEHAVIOR OF RUBBER MODIFIED ASPHALT PAVING MIXTURE
• USE OF SCRAP TIRE CHIPS IN ASPHALTIC MEMBRANE