00669037

Component

http://onlinepubs.trb.org...trr/1994/1436/1436-005.pdf

https://scholar.google.co...llin&publication_year=1994

Experiments have been conducted to determine the effect of metals, asphaltenes, and paraffins (oils and waxes) content on the properties of recycled aged asphalts. Recycling agents were produced by using a large Corbett type apparatus to fractionate asphalt fractions that had been previously separated from asphalt by supercritical fractionation. The material was separated into asphaltenes, aromatics, oils, and waxes, which were mixed in different ratios and blended with oxidized asphalts. The blends were then aged to study the composition effects during aging. In general, metals had little effect. Asphaltenes increase the hardening rate but not the oxidation rate. The effect of saturates depended on the asphaltene content. Waxes showed little, if any, effect on the measured properties. In general, highly aromatic recycling agents yielded material superior in the measured properties to the original asphalts.

This paper appears in Transportation Research Record No. 1436, Asphalt Concrete Mix Materials. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved

01401249

English

p. 38-46

1994-10

Transportation Research Record

030905513X

Figures (9) ; References (8) ; Tables (5)

Asphaltene; Concrete hardening; Hardness; Materials selection; Metals; Oxidation; Paraffin; Properties of materials

Highways; Materials; I31: Bituminous Binders and Materials

TRIS, TRB

Nov 23 1994 12:00AM

• DESIGNING ASPHALT PAVEMENTS FOR EXTREME CLIMATES
• EFFECT OF ANTISTRIP ADDITIVES ON THE PROPERTIES OF POLYMER-MODIFIED ASPHALT BINDERS AND MIXTURES
• EMPIRICAL EVALUATION OF OLIVE HUSK IN ASPHALT CEMENT BINDER AND BITUMINOUS CONCRETE
• EVALUATION AND CHARACTERIZATION OF A RUBBER-MODIFIED HOT MIX ASPHALT PAVEMENT
• EVALUATION AND FIELD VALIDATION OF PROPOSED STRATEGIC HIGHWAY RESEARCH PROGRAM BINDER SPECIFICATION FOR THERMAL CRACKING
• EVALUATION OF NATURAL SANDS USED IN ASPHALT MIXTURES
• IMPROVED LOW-TEMPERATURE FRACTURE PERFORMANCE FOR RUBBER-MODIFIED ASPHALT BINDERS
• INVESTIGATION OF LABORATORY AGING PROCESSES OF ASPHALT BINDERS USED IN FLORIDA
• INVESTIGATION OF RUTTING OF ASPHALT SURFACE LAYERS: INFLUENCE OF BINDER AND AXLE LOADING CONFIGURATION
• LOW-TEMPERATURE FRACTURE TOUGHNESS OF POLYETHYLENE-MODIFIED ASPHALT BINDERS
• RHEOLOGICAL AND RHEO-OPTICAL CHARACTERIZATION OF ASPHALT CEMENT AND EVALUATION OF RELAXATION PROPERTIES
• SOFTENING OF ASPHALTS IN DILUTE SOLUTIONS AT PRIMARY DISTILLATION CONDITIONS
• STUDY OF THE FATIGUE OF ASPHALT MIXES USING THE CIRCULAR TEST TRACK OF THE LABORATOIRE CENTRAL DES PONTS ET CHAUSSEES IN NANTES, FRANCE
• USE OF RUBBER IN ASPHALT PAVEMENTS: KANSAS EXPERIENCE