FRICTION STUDIES IN BONDED CEMENT CONCRETE PAVEMENT SLABS
A SMOOTH BASE IS DESIRABLE FOR A PRESTRESSED CONCRETE PAVEMENT SO THAT LOSSES IN PRESTRESS DUE TO FRICTIONAL RESTRAINT AT THE INTERFACE BELOW CAN BE REDUCED TO MINIMUM. IN THE CASE OF NON-PRESTRESSED RIGID PAVEMENTS, OPINION IS VARIED REGARDING THE EFFICACY OF A SMOOTH BASE. IN INDIAN HIGHWAY PRACTICE, WHERE THE STAGE CONSTRUCTION METHOD IS COMMON, THE CONCRETE SLAB IS BONDED TO A WELL CONSOLIDATED WATER-BOUND MACADAM BASE BELOW. THIS BONDING INCREASES THE EFFECTIVE THICKNESS OF THE SLAB. FURTHERMORE, THE FORCE OF ADHESION AT THE INTERFACE IS EXTREMELY HIGH AND IN THE CASE OF RESTRAINED CONTRACTION OF THE SLAB, THE FAILURE TAKES PLACE WELL INSIDE THE BASE AND THE SLAB SIMPLY ACTS AS A BONDED SURCHARGE INITIATING THE DEFORMATIONS. IN OTHER WORDS, THE CLASSICAL DRAG THEORY DOES NOT SEEM TO BE VALID FOR BONDED SLABS. /AUTHOR/
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Supplemental Notes:
- 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:
- Venkatasubramanian, V
- Publication Date: 1966
Media Info
- Media Type: Digital/other
- Features: Figures; References; Tables;
- Pagination: pp 120-135
- Monograph Title: Concrete pavement design
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Serial:
- Highway Research Record
- Issue Number: 112
- Publisher: Highway Research Board
Subject/Index Terms
- TRT Terms: Adhesion; Base course (Pavements); Bonds; Cement; Concrete pavements; Construction management; Friction tests; Prestressed concrete; Rigid pavements; Slabs; Studies; Thickness; Water bound macadam
- Uncontrolled Terms: Stage construction
- Geographic Terms: India
- Subject Areas: Construction; Highways; Pavements;
Filing Info
- Accession Number: 00205329
- Record Type: Publication
- Files: TRIS, TRB
- Created Date: Nov 18 1994 12:00AM