00728389

Component

https://doi.org/10.3141/1530-04

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

Unmodified and crumb rubber modified mixes conforming to the Arkansas State Highway and Transportation Department Type II surface course specifications were designed for heavy traffic conditions and environmental conditions typical to Arkansas by using the Marshall and Superpave Level I methods. Specimens prepared at appropriate design asphalt contents were evaluated for both volumetric and performance considerations. Three mix types, an unmodified hot-mix asphalt concrete, a dry process rubber modified asphalt, and a wet process asphalt rubber, were included in the investigation. For the asphalt cement, crumb rubber, aggregate type, and aggregate gradation used, the design asphalt content and the voids in mineral aggregate (VMA) were reduced for the SHRP Level I method relative to the Marshall method. Incorporation of crumb rubber into hot-mix asphalt concrete provided increased rutting resistance; however, the rubber modified mixes did not show enhanced resilient and tensile properties when tested at 25 deg C. Also, the performance-related properties of the SHRP Level I asphalt-rubber mixes (5, 10, and 15% A-R blends) evaluated did not differ significantly at 5% level of significance.

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

English

p. 25-33

1996

Transportation Research Record

030905902X

Figures (2) ; References (11) ; Tables (8)

Asphalt content; Crumb rubber; Hot mix asphalt; Mix design; Modulus of resilience; Performance; Ruts (Pavements); Superpave; Tensile properties; Void ratios

Strategic Highway Research Program

Dry process; Marshall mix design; Rut resistance; Voids; Wet process

Highways; Materials; I31: Bituminous Binders and Materials

TRIS, TRB

Nov 7 1996 12:00AM

• AGGREGATE POLISHING RESISTANCE PRE-EVALUATION
• 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 OF PYROLIZED CARBON BLACK FROM SCRAP TIRES AS ADDITIVE IN HOT MIX ASPHALT
• 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