STRUCTURAL DETERIORATION OF TEST PAVEMENTS: RIGID
SOME OF THE DETERIOTATION OBSERVED IN THE PORTLAND CEMENT CONCRETE TEST SECTIONS ARE REPORTED. IN CASES WHERE PUMPING OCCURED IN SECTIONS WITH SUB-BASE, THE MATERIAL EJECTED WAS THE SUB-BASE MATERIAL RATHER THAN THE UNDERLYING SOIL. PUMPING OF EMBANKMENT SOIL CONFINED TO THOSE SECTIONS WITHOUT SUB-BASE. THE AMOUNT OF EITHER MATERIAL PUMPED THRU CRACKS AND JOINTS WAS NEGLIGIBLE AS COMPARED WITH THE AMOUNT EJECTED ALONG THE EDGE. FAULTING OCCASIONALLY OCCURRED AT CRACKS, NEVER AT TRANSVERSE JOINTS. THERE WAS A TENDENCY FOR CRACKING IN REINFORCED SECTIONS WITH 40-FOOT PANEL LENGTHS TO EXCEED IN NON-REINFORCED SECTIONS HAVING 15-FOOT PANEL LENGTHS. NO PART OF THE CRACKING OF PAVEMENTS IN THE TRAFFIC LOOPS WAS ATTRIBUTED SOLELY TO ENVIRONMENTAL CHANGES, SINCE NO CRACKS WERE APPARENT IN THE NON-TRAFFIC LOOP. FROM CRACKING DATA, EQUATIONS WERE DERIVED FROM WHICH THE NUMBER OF AXLE APPLICATIONS ASSOCIATED WITH ANY GIVEN LEVEL OF CRACKING CAN BE COMPUTED FOR A GIVEN PAVEMENT DESIGN AND LOAD. GRAPHS OF THE EQUATIONS FOR A SELECTED LEVEL OF CRACKING ARE SHOWN. LONGITUDINAL CRACKS TENDED TO ORIGINATE AT TRANSVERSE JOINTS NEAR DOWEL BARS IN 2.5-, 3.5- AND 5.0- INCH SLABS BUT NOT IN THICKER PAVEMENTS.
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Supplemental Notes:
- pp 186-197, 7 FIG, 7 TAB 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
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Corporate Authors:
Highway Research Board
2101 Constitution Avenue, NW
Washington, DC 20418 500 Fifth Street, NW
Washington, DC United States 20001 -
Authors:
- Scrivner, F H
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Conference:
- Highway Research Board Conference on the AASHO Road Test
- Location: St Louis MO, United States
- Date: 1962-5-16 to 1962-5-18
- Publication Date: 1962
Media Info
- Monograph Title: THE AASHO ROAD TEST - PROCEEDINGS OF A CONFERENCE HELD MAY 16-18, 1962, ST. LOUIS, MISSOURI
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Serial:
- Highway Research Board Special Report
- Issue Number: 73
- Publisher: Highway Research Board
Subject/Index Terms
- TRT Terms: Embankments; Faulting; Longitudinal cracking; Mathematical analysis; Pavement cracking; Portland cement concrete; Pumps; Reinforced concrete pavements; Rigid pavements; Subbase (Pavements); Test sections
- Identifier Terms: AASHO Road Test
- Uncontrolled Terms: Subbase
- Subject Areas: Highways; Pavements;
Filing Info
- Accession Number: 00207116
- Record Type: Publication
- Files: TRIS, TRB
- Created Date: Aug 26 1970 12:00AM