00621468

Component

http://onlinepubs.trb.org...trr/1991/1317/1317-001.pdf

https://scholar.google.co...ttle&publication_year=1991

A 7-in. overlay of polyethylene-modified asphalt concrete (using the Novophalt process) was placed at the William Hobby Airport in Houston, Texas, in December 1988. The mixture was somewhat binder-rich according to traditional mixture design methodology (i.e., Marshall and Hveem). The binder-rich mixture and the optimally designed polyethylene-modified mixture (optimum binder content according to Marshall design) were evaluated. This evaluation included compressive uniaxial creep compliance testing, uniaxial repeated-load permanent deformation testing, tensile creep testing, tensile strength testing, and resilient modulus testing. Binder-rich polyethylene-modified asphalt concrete proved to be significantly less sensitive to permanent deformation than the control mixture. The binder-rich mixture also demonstrated significantly greater resistance to fracture as verified by indirect tensile test data (toughness) over a range of temperature from 32 deg F to 104 deg F and by the slope of the steady-state region of indirect tensile creep plots. The response of the binder-rich mixtures also demonstrated a strong sensitivity to the initial level of compaction. Binder-rich mixtures compacted to air void contents between 5.0 and 6.5% were not substantially more susceptible to permanent deformation than the optimally designed mixture at the 104 deg F test temperature. Data from Italy verify the hypothesis that binder-rich polyethylene-modified asphalt concrete mixtures can perform successfully in certain specialized applications with acceptable resistance to permanent deformation, potentially superior resistance to fracture (reflection cracking and thermal cracking), and potentially superior durability of the low-permeability, binder-rich mixture.

This paper appears in Transportation Research Record No. 1317, Asphalt Mixtures: Design, Testing, and Evaluation 1991. 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

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1991

Transportation Research Record

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Figures (10) ; References (13)

Accelerated tests; Air voids; Airport runways; Binder content; Compaction; Creep tests; Deformation; Durability; Ethylene resins; Fracture properties; Modulus of resilience; Overlays (Pavements); Performance evaluations; Polymer asphalt; Repeated loads; Tensile strength; Tension tests

Indirect tensile test; Polyethylene

Design; Highways; Materials; Pavements; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces; I31: Bituminous Binders and Materials

TRIS, TRB, ATRI

Apr 30 1992 12:00AM

• ANALYSIS OF CRACK PROPAGATION IN ASPHALT CONCRETE USING COHESIVE CRACK MODEL
• DEVELOPMENT OF A PRACTICAL METHOD FOR DESIGN OF HOT-MIX ASPHALT
• EFFECT OF AGGREGATE GRADATION VARIATION ON ASPHALT CONCRETE MIX PROPERTIES
• EFFECT OF LOADING MAGNITUDE ON MEASURED RESILIENT MODULUS OF ASPHALTIC CONCRETE MIXES
• EFFECT OF TEMPERATURE AND MIXTURE VARIABLES ON FATIGUE LIFE PREDICTED BY DIAMETRAL FATIGUE TESTING
• EFFECT OF THE USE OF MODIFIERS ON PERFORMANCE OF ASPHALTIC PAVEMENTS
• EFFECTS OF SAMPLE PREPARATION AND AIR-VOID MEASUREMENT ON ASPHALT CONCRETE PROPERTIES
• EVALUATION OF MARSHALL AND HVEEM MIX DESIGN PROCEDURES FOR LOCAL USE
• EVALUATION OF MIX PROPERTIES OF COLD IN-PLACE RECYCLED MIXES
• EVALUATION OF RESIN-MODIFIED PAVING PROCESS
• INVESTIGATION OF RUTTING POTENTIAL USING STATIC CREEP TESTING ON POLYMER-MODIFIED ASPHALT CONCRETE MIXTURES
• MATERIAL CHARACTERIZATION AND INHERENT VARIATION ANALYSIS OF ASPHALTIC FIELD CORES
• METHODS TO DETERMINE POLYMER CONTENT OF MODIFIED ASPHALT
• NEW TECHNIQUE TO MEASURE MOISTURE IN HOT-MIX ASPHALT CONCRETE NONDESTRUCTIVELY