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Title: AUTOMATED VERSUS MANUAL PROFILOGRAPH CORRELATION
Accession Number: 00642397
Record Type: Component
Availability: Find a library where document is available Abstract: The Texas Department of Transportation (TxDOT) has attempted to correlate the outputs of the automated Cox profilograph, the automated McCracken profilograph and a TxDOT manual McCracken profilograph. The evaluation process was precipitated by calls from construction engineers within the TxDOT highway agency and paving contractors working within Texas. Both the state and contractor personnel were requesting the use of the automated profilograph. The results of the evaluation process were as follows. The Cox automated profilograph used a filter setting number of 5, which represents the attenuation of 2.2 ft (0.067 m) and less, whereas the McCracken model used a data filter cutoff frequency of 2.5 ft (0.76 m). The profilograms from the TxDOT manual profilograph were reduced by two different interpreters. Both of the automated versions of the profilograph were slightly more repeatable than the interpretation of the manual profilograph. The automated profilograph showed very close correlation with the manual profilograph on the smooth, medium, and rough sections of asphalt concrete pavement and on the rough sections of continuously reinforced concrete (CRC) pavement. The automated profilographs deviated from the manual profilograph output on the smooth-section CRC pavement. This deviation was from 0.5 to 2.0 (0.789 to 3.16 cm) PI counts smoother (lower) than the output of the manual profilograph.
Supplemental Notes: This paper appears in Transportation Research Record No. 1410, Pavement Monitoring and Evaluation. 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 Title: Monograph Accession #: 01403259
Language: English
Authors: Bertrand, Carl BPagination: p. 67-79
Publication Date: 1993
Serial: ISBN: 0309055571
Features: Figures
(10)
; References
(8)
; Tables
(4)
Uncontrolled Terms: Old TRIS Terms: Subject Areas: Data and Information Technology; Highways; Pavements; I23: Properties of Road Surfaces
Files: TRIS, TRB, ATRI
Created Date: Feb 18 1994 12:00AM
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