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Title:

RECYCLING PCC ROADWAYS IN OKLAHOMA

Accession Number:

00399157

Record Type:

Component

Availability:

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Order URL: http://worldcat.org/isbn/0309037700

Abstract:

The first portland cement concrete (PCC) pavement recycling project in Oklahoma is described. The project consisted of 7.75 miles of Interstate 40 east of Oklahoma City. The original pavement had passed its design life of 20 years and had experienced moderate D-cracking. The deteriorating 9-in. slab was replaced by a 10-in. slab. As a result of this demonstration project, recycling existing PCC pavements into coarse aggregate was shown to be practical. Sufficient coarse aggregate can be produced to replace old pavements with new pavements. The recycled PCC has the workability and meets the strength requirements of virgin mix PCC. Although a comparison of energy requirements between the recycled PCC alternative and an asphaltic concrete overlay of approximately 9 in. showed no significant difference, the contractors' bids did. The asphaltic concrete overlay was bid at $5.9 million, and the PCC recycle alternative was bid at $5.2 million. Previous research had suggested that the original D-cracking problem had been reduced in two ways. First, the original 1.5-in. coarse aggregate was downsized to 0.75 in. Also, 85 lb of portland cement was replaced with 115 lb of fly ash per cubic yard of concrete.

Supplemental Notes:

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. Publication of this paper sponsored by Committee on Rigid Pavement Construction.

Monograph Accession #:

01419862

Authors:

Hankins, Richard B
Borg, Tim M

Editors:

Kaplan, Elizabeth W

Pagination:

pp 1-4

Publication Date:

1984

Serial:

Transportation Research Record

Issue Number: 986
Publisher: Transportation Research Board
ISSN: 0361-1981

Conference:

63rd Annual Meeting of the Transportation Research Board

Location: Washington District of Columbia, United States
Date: 1984-1-16 to 1984-1-20

ISBN:

0309037700

Media Type:

Print

Features:

Figures (1) ; References (4)

Uncontrolled Terms:

Concrete strength

Geographic Terms:

Oklahoma

Old TRIS Terms:

Oklahoma

Subject Areas:

Administration and Management; Construction; Finance; Highways; Pavements; Security and Emergencies; Vehicles and Equipment; I52: Construction of Pavements and Surfacings

Files:

TRIS, TRB

Created Date:

Jan 31 1986 12:00AM

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