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Title:

EVALUATING NONNUCLEAR MEASUREMENT DEVICES TO DETERMINE IN-PLACE PAVEMENT DENSITY (WITH DISCUSSION AND CLOSURE)

Accession Number:

00985972

Record Type:

Component

Availability:

Transportation Research Board Business Office

500 Fifth Street, NW
Washington, DC 20001 United States
Order URL: http://www.trb.org/Main/Public/Blurbs/155520.aspx

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Order URL: http://worldcat.org/isbn/0309094941

Abstract:

The air void content of both in-place and laboratory-compacted hot-mix asphalt may be the factor that most affects the performance of a properly designed mixture. A mediocre mix, well constructed with good in-place air voids, often will perform better than a good mix that has been poorly constructed. In-place density may be monitored by using three methods: cores, nuclear density gauge measurements, and nonnuclear density gauge measurements. A study was done to evaluate and compare two nonnuclear density devices, the pavement quality indicator (PQI) Model 301 and the PaveTracker, to in-place core densities. Testing and analyses of 20 projects showed that uncorrected gauge measurements (from each gauge) provided reasonable correlation (significant at a 5% level of significance) with core density measurements approximately 75% of the time. Average coefficients of determination for the relationships between uncorrected gauge measurements and core densities were approximately .5. Simulation analyses indicated that the error in measuring in-place air voids using calibrated PQI Model 301 gauge measurements based on the constant offset method can be 1% to 2.7% air voids for the average of 10 measurements. The numerical experiments also indicated that calibration of PQI Model 301 by simple offset or by slope and offset did not improve the correlation between the gauge and core densities.

Supplemental Notes:

This paper appears in Transportation Research Record No. 1900, Construction 2004.

Monograph Title:

CONSTRUCTION 2004

Monograph Accession #:

00985965

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Hurley, G C
Prowell, B D
Cooley Jr, L A

Discussers:

Colosimo, D D

Pagination:

p. 56-64

Publication Date:

2004

Serial:

Transportation Research Record

Issue Number: 1900
Publisher: Transportation Research Board
ISSN: 0361-1981

ISBN:

0309094941

Features:

Figures (8) ; References (31) ; Tables (4)

Uncontrolled Terms:

Nonnuclear density gages

Subject Areas:

Construction; Highways; I52: Construction of Pavements and Surfacings

Files:

TRIS, TRB

Created Date:

Feb 17 2005 12:00AM

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