MARYLANDS TWO CONTINUOUSLY-REINFORCED CONCRETE PAVEMENTS-- A PROGRESS REPORT
TWO HIGHWAY PROJECTS USING CONTINUOUSLY-REINFORCED CONCRETE PAVING HAVE BEEN CONSTRUCTED BY THE MARYLAND STATE ROADS COMMISSION. NINE SECTIONS OF CONTINUOUSLY-REINFORCED PAVEMENT ARE INCLUDED IN THE PROJECT. THE PAVEMENT IS 8 IN. THICK, FOUNDED ON A GRANULAR-TYPE SUBBASE OF 6 IN. MINIMUM THICKNESS. TWO LENGTHS OF CONVENTIONAL JOINTED PAVEMENT ARE INCLUDED AS CONTROL SECTIONS. THEY ARE 9 IN. THICK, JOINTED AT 40 FT. CENTERS, AND FOUNDED ON A GRANULAR SUBBASE OF THE SAME THICKNESS. TRAFFIC DATA TABLES PROVIDE AN ANNUAL REPORT OF AXLE LOADS OF VARIOUS MAGNITUDES USING THE FACILITY. ANALYSIS IS MADE OF CRACK PATTERNS, CRACK WIDTHS, FAILURES AND POSSIBLE CAUSES, END MOVEMENTS OF CONTINUOUSLY-REINFORCED SLABS, END ANCHORAGES, AND ROAD ROUGHNESS MEASUREMENTS. THE PERFORMANCE AND COST OF CONTINUOUSLY-REINFORCED CONCRETE PAVEMENT IS COMPARED WITH CONVENTIONAL PAVEMENT. THE FOLLOWING IMPROVEMENTS ARE SUGGESTED FROM THIS STUDY' 1/ IT IS IMPORTANT TO VIBRATE BOTH LIFTS OF A CONTINUOUSLY-REINFORCED PAVEMENT AND TO USE TWO PAVERS WHEN TWO LIFT CONSTRUCTION PROCEDURE IS FOLLOWED, 2/ PREPLACING THE STEEL IN VERY LONG LENGTHS AND COMPLETELY RANDOMIZING SPLICE LOCATIONS WOULD BE A PREFERRED TYPE OF CONSTRUCTION, 3/ THE LENGTH OF THE LAP SHOULD BE LENGTHENED 4/ THE SIMPLEST TYPE OF TERMINAL JOINT SHOULD BE USED, AND 5/ END ENCHORAGES, IF USED, MUST BE MASSIVE.
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Supplemental Notes:
- No5, Pp99-119, 6PHO, 6FIG, 8TAB. 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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Authors:
- Lee, Allan
- Publication Date: 1963
Media Info
- Monograph Title: Continuously-reinforced concrete pavement
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Serial:
- Highway Research Record
- Issue Number: 5
- Publisher: Highway Research Board
Subject/Index Terms
- TRT Terms: Aerodynamic lift; Anchorages; Axle load force; Continuously reinforced concrete pavements; Cracking; Economic analysis; Experimental roads; Fracture mechanics; Granular materials; Lap joints; Measurement; Motion; Pavements; Pavers; Reinforced concrete; Roughness; Smoothness; Subbase (Pavements); Test sections; Vibratory equipment
- Uncontrolled Terms: Crack propagation; Lifts; Subbase
- Geographic Terms: Maryland
- Old TRIS Terms: Control conditions; End anchorages; Lift slab construction; Pavement smoothness; Preplacing steel; Terminal joint; Vibrating equipment
- Subject Areas: Economics; Highways; Materials; Pavements;
Filing Info
- Accession Number: 00211944
- Record Type: Publication
- Files: TRIS, TRB
- Created Date: Feb 9 1994 12:00AM