00728398

Component

https://doi.org/10.3141/1530-13

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

Current methods of pre-evaluation of aggregates for bituminous surface courses such as the British Pendulum and British Polishing Wheel and chemical or mineralogical methods are only able to identify clearly aggregates with a high probability of performing well. There is little agreement among researchers as to what engineering properties will provide adequate frictional resistance at various average daily traffic (ADT) levels. The lack of agreement has led to conservative polish-resistance specifications and subsequently higher pavement costs. The Tennessee Textural Retention Method (TTRM) uses single size aggregate (6.35 to 9.52 mm), the Los Angeles Abrasion device, and a modified version of the AASHTO TP 33 device to evaluate particle shape and texture throughout simulated aging. In this evaluation, using 25 Tennessee aggregates, the TTRM was used to characterize aggregate polish-resistance performance at various ADT levels by comparing the results obtained on other aggregates with the results from field proven performers. The TTRM ranked all Tennessee proven performing siliceous limestones and gravels in the appropriate ADT category for which they are currently approved. In addition, new promising aggregate sources were revealed. The test method had a coefficient of variation for aggregate ratings of less than 3% for a nine-sample repeatability test. In addition, the maximum coefficient of variation of voids tests at any given aging revolution for an individual aggregate never exceeded 2%. The method may be helpful in pairing aggregate polish-resistance performance with pavement need based on ADT.

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

English

p. 103-110

1996

Transportation Research Record

030905902X

Figures (5) ; References (11) ; Tables (7)

Aggregates; Aggregates by shape and surface texture; Aging (Materials); Average daily traffic; Polished aggregates; Simulation; Skin resistance; Texture; Void ratios

Aggregate shape; Polish resistance; Repeatability; Voids

Geotechnology; Highways; Pavements; I23: Properties of Road Surfaces; I36: Aggregates

TRIS, TRB

Nov 8 1996 12:00AM

• 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 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