00215801

Component

http://onlinepubs.trb.org...ubs/hrr/1965/80/80-002.pdf

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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01410039

pp 11-35

1965

Highway Research Record

Digital/other

Appendices (2) ; Figures (35) ; References (8)

Bridges; Creep; Curve fitting; Equations; Expansion joints; Joint sealers; Mechanical relaxation; Modulus of elasticity; Photoelasticity; Sealing compounds; Shape; Sulfides; Temperature; Viscoelasticity

Bridges and other structures; Geotechnology; Highways; Materials

TRIS, TRB

Dec 22 1994 12:00AM

• A STRUCTURAL APPROACH TO SEALING JOINTS IN CONCRETE
• BRIDGE JOINT SEALING-ITS MATERIALS AND MECHANICAL PROBLEMS
• EFFECTS OF SPECIMEN LENGTH ON LABORATORY BEHAVIOR OF SEALANTS
• FACTORS IN JOINT SEAL DESIGN
• METHODS OF FORMING JOINTS IN PORTLAND CEMENT CONCRETE PAVEMENT
• NEW YORK STATE EXPERIENCE WITH CONCRETE PAVEMENT JOINT SEALERS
• PERFORMANCE OF A COMPRESSION JOINT SEAL