EFFECTS OF AGE AND DEFORMATION ON VISCOELASTIC BEHAVIOR OF CONCRETE JOINT SEALANT IN: RECENT DEVELOPMENTS IN THE DESIGN AND SPECIFICATION OF CONCRETE PAVEMENT SYSTEMS (SP-181)

This paper develops a finite-deformation viscoelastic material model to characterize the behavior of silicone-based sealant material. A series of relaxation tests were performed on the test specimens for different levels of age and unit extension. Based on the experimental results, a master relaxation modulus curve is constructed. Unit extension and age effects are incorporated in the master relaxation curve by using the superposition principle. The shift factor equations developed were based on the relationship first suggested by the WLF equation and traditionally used for incorporating temperature effect. The unit extension and age dependence are accounted in the "reduced time". The material model derived is of generalized Maxwell type, which is simple and can easily be applied in finite element programs for stress analysis of joint sealants in concrete pavement.

• Corporate Authors:

  American Concrete Institute (ACI)

  38800 Country Club Drive
  Farmington Hills, MI  United States  48331
• Authors:
  • Gurjar, A
  • Tang, Tao
• Publication Date: 1999

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 65-85
• Monograph Title: RECENT DEVELOPMENTS IN THE DESIGN AND SPECIFICATION OF CONCRETE PAVEMENT SYSTEMS

Subject/Index Terms

• TRT Terms: Concrete pavements; Deformation; Finite element method; Joint sealing; Modulus of deformation; Physiological stress; Silicones; Temperature; Viscoelasticity
• Subject Areas: Design; Highways; Pavements; I22: Design of Pavements, Railways and Guideways;

Filing Info

• Accession Number: 00765276
• Record Type: Publication
• Files: TRIS
• Created Date: Jun 7 1999 12:00AM