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Title:

STRUCTURAL ADEQUACY OF RUBBLIZED PORTLAND CEMENT CONCRETE PAVEMENT

Accession Number:

00780241

Record Type:

Component

Availability:

Transportation Research Board Business Office

500 Fifth Street, NW
Washington, DC 20001 United States

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Order URL: http://worldcat.org/isbn/0309071097

Abstract:

The objective of rubblization is to eliminate reflection cracking in hot-mix asphalt (HMA) overlay by the total destruction of the existing slab action. Rubblization is applicable when there is little potential for retaining slab integrity and structural capacity of the original jointed reinforced concrete pavement. Rubblization has been used successfully for rehabilitation of other portland cement concrete (PCC) pavement types. Typically, the slab is reduced to pieces less than 300 mm in size. Subsequently, the slab is converted to a high-strength granular base. Restoration of the structural capacity is accomplished with an overlay of HMA. In 1991, the Indiana Department of Transportation (INDOT) awarded a contract to apply the rubblization technique to a portion of US-41 in Benton County. The pavement sections were evaluated before and after rubblizing and overlay to estimate the AASHTO layer coefficient of rubblized concrete pavements. The layer coefficient determined in this study (0.25) represents a value of two standard deviations less than that reported by PCS/Law. Currently, INDOT uses a layer coefficient of 0.20 for rubblized PCC pavements. On the basis of the results of this study, the layer coefficient can be set within two standard deviations of the mean (i.e., 0.22). This layer coefficient of 0.22 represents a conservative value that is recommended for rubblized PCC pavements with similar conditions. If INDOT continues to use the rubblization technique in pavement rehabilitation, a study encompassing slabs of different thicknesses on different subgrades should be undertaken for confirmation of the values that are reported herein.

Supplemental Notes:

This paper appears in Transportation Research Record No. 1684, Issues in the Design of New and Rehabilitated Pavements.

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Galal, K A
Coree, B J
Haddock, J E
White, T D

Pagination:

p. 172-177

Publication Date:

1999

Serial:

Transportation Research Record

Issue Number: 1684
Publisher: Transportation Research Board
ISSN: 0361-1981

ISBN:

0309071097

Features:

Figures (8) ; References (12) ; Tables (6)

Geographic Terms:

Subject Areas:

Design; Highways; Pavements; Security and Emergencies; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces

Files:

TRIS, TRB, ATRI

Created Date:

Dec 13 1999 12:00AM

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