00667675

Component

http://onlinepubs.trb.org...trr/1994/1435/1435-018.pdf

https://scholar.google.co...hter&publication_year=1994

A comparative testing experiment between the four K.J. Law profilometers that are used to collect data for the Long-Term Pavement Performance program was conducted in Ames, Iowa, in August 1992. The objectives of the comparison were to (a) determine whether the profilometers collect similar data, (b) determine whether the profilometers can collect repeatable data at a section, and (c) compare data collected by the profilometers with data collected by the Dipstick and the rod and level. Four asphalt concrete and four portland cement concrete sections were selected for testing. All profilometers obtained six replicate runs at 65 km/hr (40 mph) and 80 km/hr (50 mph) at all test sections. The international roughness index (IRI) computed from the profile data was used as the statistic to analyze profiles. An analysis of variance was separately conducted on the left and right wheelpath IRI. This analysis showed that similar profile data are being collected by the profilometers in both wheelpaths. All profilometers showed good repeatability in collecting data. Generally good agreement was obtained between the IRI computed from profiles measured by the Dipstick and the profilometers. A study of random measuring errors showed that they can have a considerable effect on IRI of smooth pavements. Generally, for pavements that had IRI values less than 1.6 m/km (100 in./mi), poor agreement was obtained between IRI computed from rod and level and profilometer profiles. This was attributed to random measuring errors during rod and level measurements. Better agreement was obtained between rod and level and profilometer IRI for profiles that had an IRI greater than 1.6 m/km (100 in./mi).

This paper appears in Transportation Research Record No. 1435, Pavement and Traffic 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

01401245

English

p. 137-144

1994-9

Transportation Research Record

0309055121

Figures (4) ; References (6) ; Tables (8)

Accuracy; Alternatives analysis; Analysis of variance; Asphalt pavements; Concrete pavements; Profilometers; Test sections

International Roughness Index

Repeatability; Wheelpaths

Data and Information Technology; Highways; Pavements; I23: Properties of Road Surfaces

TRIS, TRB

Oct 13 1994 12:00AM

• CAN THE HIGHWAY COMMUNITY BE READY FOR METRIC BY 1996?
• COMPARISON OF WEIGHT DATA COLLECTED AT WEIGH-IN-MOTION SYSTEMS ON THE SAME ROUTE
• CORRELATION OF PRESENT SERVICEABILITY RATINGS WITH INTERNATIONAL ROUGHNESS INDEX
• CORRELATION STUDY OF CALIFORNIA PROFILOGRAPH AND K. J. LAW PROFILOMETER
• DESIGN AND RELIABILITY ASSESSMENT OF DATA ACQUISITION SYSTEM FOR LOUISIANA ACCELERATED LOADING DEVICE
• ELECTRICAL RESISTANCE TOMOGRAPHY IMAGING OF SPATIAL MOISTURE DISTRIBUTION IN PAVEMENT SECTIONS
• EVALUATION OF ROUGHNESS SYSTEM OF AUTOMATIC ROAD ANALYZER
• EVALUATION OF STRATEGIC HIGHWAY RESEARCH PROGRAM--LONG-TERM PAVEMENT PERFORMANCE SURFACE DISTRESS DATA COLLECTION PROCEDURES
• FEASIBILITY OF AUTOMATING PAVEMENT DISTRESS ASSESSMENT USING MATHEMATICAL MORPHOLOGY
• FINDINGS FROM FIVE YEARS OF OPERATING OREGON'S AUTOMATED WOODBURN PORT OF ENTRY
• GETTING BETTER TRUCK FLOWS AND LOADS: TRUCK WEIGHT CASE STUDY
• HEAT TRANSFER FROM VEHICULAR CATALYST TO PAVEMENT
• IMAGE-PROCESSING METHODS FOR AUTOMATED DISTRESS EVALUATION
• KANSAS EXPERIENCE WITH SMOOTHNESS SPECIFICATIONS FOR CONCRETE PAVEMENTS
• LONG-TERM PAVEMENT PERFORMANCE HISTORY OF SULFUR-EXTENDED ASPHALT TEST ROADS IN EASTERN PROVINCE OF SAUDI ARABIA
• MEASUREMENT OF TRUCK TIRE FOOTPRINT PRESSURES
• NETWORK-LEVEL PERFORMANCE EVALUATION OF ASPHALT-RUBBER PAVEMENT TREATMENTS IN ARIZONA
• OBJECTIVES AND CONTENT OF AASHTO GUIDE TO METRIC CONVERSION
• PREDICTION OF TIRE-ROAD FRICTION FROM TEXTURE MEASUREMENTS
• RELATIONSHIPS BETWEEN INTERNATIONAL ROUGHNESS INDEX AND PRESENT SERVICEABILITY RATING
• SENSITIVITY OF REAR WHEEL PAVEMENT LOADING TO VARIATIONS IN HEAVY VEHICLE PARAMETERS, SPEED, AND ROAD ROUGHNESS
• SIDE FRICTION DEMANDED AND MARGINS OF SAFETY ON HORIZONTAL CURVES
• STRATEGIC HIGHWAY RESEARCH PROGRAM--LONG-TERM PAVEMENT PERFORMANCE INFORMATION MANAGEMENT SYSTEM