00390792

Component

http://onlinepubs.trb.org...s/trr/1983/911/911-009.pdf

https://scholar.google.co...youb&publication_year=1983

The technique of recycling asphalt pavement materials has been widely used in the past decade, but unsolved problems such as rutting and instability still exist. Softening agents or low-viscosity binders such as emulsified asphalts are usually added during the cold recycling process, which may have a slow softening reaction. Thus, the properties of the recycled mixtures as controlled by several factors, including the oxidation hardening of the new bituminous materials and the softening effect of the softening agents or emulsions. An evaluation of the long-term behavior of such mixtures by means of both creep and Marshall tests conducted at 75 deg F is presented. The mixture was artificially aged by curing at 140 deg F up to 60 days and tested at different ages. The creep compliance of both virgin and recycled mixtures decreased rapidly at early ages due to the oxidation of the asphalt mixtures decreased rapidly at early ages due to the oxidation of the asphalt binder and then remained essentially the same. No large difference was observed in the creep behavior of the virgin and recycled mixtures. Neither creep nor Marshall test results support the hypothesis that the emulsified asphalt used in the study has a long-term softening effect on the old asphalt binder. (Author)

Publication of this paper sponsored by Committee on Characteristics of Bituminous Paving Mixtures to Meet Structural Requirements. 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

01420421

pp 64-66

1983

Transportation Research Record

0309035546

Print

Figures (4) ; Photos (1) ; References (6) ; Tables (1)

Asphalt mixtures; Cold in-place recycling; Cold weather; Creep; Emulsified asphalt; Marshall test; Recycling; Softening point; Time duration

Long term

Highways; Materials; I31: Bituminous Binders and Materials

TRIS, TRB

Dec 30 1984 12:00AM

• A SULPHLEX MIXTURE DESIGN METHOD BASED ON THE INDIRECT TENSILE TEST
• AVAILABILITY OF SULFUR FOR SULFUR-EXTENDED ASPHALT PAVING IN WASHINGTON STATE
• COLD-MIX RECYCLING OF ASPHALT MATERIALS: AN APPLICATION TO LOW-VOLUME ROADS
• COMPACTIBILITY OF ASPHALT PAVING MIXTURES AND RELATION TO PERMANENT DEFORMATION
• DEVELOPMENT OF RATIONAL PAY ADJUSTMENT FACTORS FOR ASPHALT CONCRETE (DISCUSSION, CLOSURE)
• EFFECT OF EMULSIFIED BINDERS ON CHARACTERISTICS OF BITUMINOUS MIXTURES
• EFFECT OF SPECIMEN SIZE ON MARSHALL TEST RESULTS OF COLD-MIXED, ASPHALT-STABILIZED BASES
• EVALUATION OF MOISTURE EFFECTS ON ASPHALT CONCRETE MIXTURES
• EXPERIENCE IN IOWA WITH SPRINKLE TREATMENT OF ASPHALT PAVEMENTS
• FOAMED-ASPHALT PAVING MIXTURES: PREPARATION OF DESIGN MIXES AND TREATMENT OF TEST SPECIMENS
• Fundamental Comparison of the Flexural and Indirect Tensile Tests
• INVESTIGATION OF MOISTURE DAMAGE TO ASPHALT CONCRETE AND THE EFFECT ON FIELD PERFORMANCE--A CASE STUDY
• LABORATORY INVESTIGATION OF THE USE OF FOAMED ASPHALT FOR RECYCLED BITUMINOUS PAVEMENTS
• MODIFICATION OF THE ASPHALT INSTITUTE BITUMINOUS MIX MODULUS PREDICTIVE EQUATION (DISCUSSION)
• PROCEDURE FOR PREDICTING LABORATORY RETAINED STRENGTH CUT-OFF AND ADDITIVE BENEFIT-COST RATIOS OF MOISTURE-DAMAGED ASPHALT CONCRETE
• RUTTING PROPERTIES OF A DUNE-SAND PAVING MIXTURE (DISCUSSION, CLOSURE)
• SPRINKLE TREATMENT IN ILLINOIS
• SPRINKLE TREATMENT OF ASPHALT PAVEMENTS
• STRIPPING OF ASPHALT PAVEMENTS: STATE OF THE ART (DISCUSSION, CLOSURE)
• STRUCTURAL PROPERTIES OF LABORATORY MIXTURES CONTAINING FOAMED ASPHALT AND MARGINAL AGGREGATES
• TEST FOR EFFICIENCY OF MIXING OF RECYCLED ASPHALT PAVING MIXTURES
• USE OF FOAMED ASPHALT IN RECYCLING OF AN ASPHALT PAVEMENT
• VISCO-ELASTO-PLASTIC CONSTITUTIVE LAW FOR A BITUMINOUS MIXTURE UNDER REPEATED LOADING