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Title:

PERFORMANCE COMPARISON BETWEEN A CONVENTIONAL OVERLAY AND A HEATER-SCARIFICATION OVERLAY

Accession Number:

00348696

Record Type:

Component

Availability:

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Order URL: http://worldcat.org/isbn/0309032638

Abstract:

The heater-scarification technique has become one of the most commonly accepted forms of pavement surface recycling in use today. This has been due primarily to the record of successful performance exhibited by these projects over a relatively long period of time. The performance characteristics of a typical heater-scarification overlay project are analytically examined and compared with those of a conventional overlay. The comparison examines fatigue cracking caused by wheel loadings and thermal-fatigue cracking caused by daily temperature cycles. The results are presented for one combination of aged asphalt and recycling agent and one overlay type. The results show that for this combination the commonly held statement that a 19- to 25-mm (0.75- to 1.0-in) depth of heater scarification with 38-mm (1.5 in) of overlay will perform as well as 89 mm (3.5 in) of conventional overlay has some validity. The calculations illustrate the need for laboratory testing to select the best recycling agent for the particular asphalt being recycled and the need to tailor the characteristics of the recycled binder to produce the desired product. (Author)

Supplemental Notes:

Publication of this paper sponsored by Committee on Characteristics of Bituminous-Aggregate Combinations 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

Monograph Accession #:

01411629

Authors:

Carpenter, Samuel H

Pagination:

pp 4-12

Publication Date:

1981

Serial:

Transportation Research Record

Issue Number: 821
Publisher: Transportation Research Board
ISSN: 0361-1981

Conference:

60th Annual Meeting of the Transportation Research Board

Location: Washington District of Columbia, United States
Date: 1981-1-12 to 1981-1-16

ISBN:

0309032638

Media Type:

Print

Features:

Figures (13) ; Photos (1) ; References (19)

Old TRIS Terms:

Subject Areas:

Highways; Materials; Pavements; I23: Properties of Road Surfaces

Files:

TRIS, TRB

Created Date:

Jun 30 1982 12:00AM

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