A STUDY OF POLYSULFIDE SEALANTS FOR JOINTS IN BRIDGES
THE POLYSULFIDE SEALANTS USED IN EXPANSION JOINTS IN BRIDGES ARE COMMONLY ASSUMED TO BE PERFECTLY ELASTIC MATERIALS. THIS PAPER SHOWS THAT THESE SEALANTS ARE ACTUALLY VISCOELASTIC AND EXHIBIT THE INTERRELATED PHENOMENA OF CREEP AND STRESS RELAXATION. CURVES ARE INCLUDED FOR MODULUS OF ELASTICITY, CREEP, AND STRESS RELAXATION, WITH SHAPE FACTOR, SHORE HARDNESS AND TEMPERATURE AS PARAMETERS. SAMPLE SOLUTIONS ARE SHOWN FOR THE STRESSES IN THE SEALANTS UNDER VARIOUS LOADING CONDITIONS, INCLUDING TENSION PLUS SHEAR AND COMPRESSION PLUS SHEAR. A STRESS RELAXATION EQUATION IS DERIVED USING A CURVE-FITTING TECHNIQUE AND THE STRESS RELAXATION RELATIONSHIP IS VERIFIED BY STANDARD LABORATORY METHODS AND BY THE METHOD OF PHOTOELASTICITY. /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:
- Cook, John P
- Publication Date: 1965
Media Info
- Media Type: Digital/other
- Features: Appendices; Figures; References;
- Pagination: pp 11-35
- Monograph Title: Joints and sealants - a symposium and other papers
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Serial:
- Highway Research Record
- Issue Number: 80
- Publisher: Highway Research Board
Subject/Index Terms
- TRT Terms: Bridges; Creep; Curve fitting; Equations; Expansion joints; Joint sealers; Mechanical relaxation; Modulus of elasticity; Photoelasticity; Sealing compounds; Shape; Sulfides; Temperature; Viscoelasticity
- Old TRIS Terms: Polysulfide sealant; Shape factor; Shore hardness
- Subject Areas: Bridges and other structures; Geotechnology; Highways; Materials;
Filing Info
- Accession Number: 00215801
- Record Type: Publication
- Files: TRIS, TRB
- Created Date: Dec 22 1994 12:00AM