STUDY OF THE MICROMECHANICAL BEHAVIOR OF CONCRETE USING REFLECTIVE PHOTOELASTICITY

TESTS ARE REPORTED TO STUDY THE MICRO-MECHANICAL BEHAVIOR OF CONCRETE USING A PHOTOELASTIC REFLECTING TECHNIQUE TO DETERMINE THE INTERNAL AND BOND STRAINS IN CONCRETE. IN THIS TECHNIQUE A LAYER OF SUITABLE BIREFRINGENT MATERIAL IS BONDED TO THE SLICED SURFACE OF A SPECIMEN. WHEN THE SPECIMEN IS LOADED THE RESULTING SURFACE STRAINS ARE FOLLOWED BY THE COATING. THE ISOCHROMATIC PATTERNS OBSERVED THROUGH POLARIZED LIGHT REFLECTED FROM THE SURFACE CAN THEN BE INTERPRETED IN TERMS OF STRAIN. THE PRINCIPLE OF THE TECHNIQUE, THE METHOD OF MEASUREMENTS, AND OF THE SEPARATION OF PRINCIPAL STRAINS ARE DESCRIBED. THE EFFECTS OF VARYING THE AGGREGATE AND MATRIX STIFFNESS AND OF DRYING SHRINKAGE ON THE INTERNAL AND BOND STRAINS ARE DISCUSSED. THE RESULTS ARE COMPARED TO CONVENTIONAL STRAIN GAGE MEASUREMENTS. THE LIMITATIONS OF, AND THE ERRORS INHERENT IN THE TECHNIQUE ARE DISCUSSED. /AUTHOR/

• Authors:
  • Swamy, R N
• Publication Date: 1971-11

Media Info

• Pagination: p. 357-70
• Serial:
  • Matls & Structures, Res & Testing /Fr/
  • Volume: 4
  • Issue Number: 24

Subject/Index Terms

• TRT Terms: Concrete tests; Deformation curve; Mechanical properties; Photoelasticity; Refraction
• Old TRIS Terms: Birefringence; Photoelastic studies
• Subject Areas: Highways; Materials;

Filing Info

• Accession Number: 00214111
• Record Type: Publication
• Files: TRIS
• Created Date: Apr 23 1972 12:00AM