VISCOELASTIC SHRINKAGE STRESS IN SOIL-CEMENT BASE

ENGINEERS GENERALLY CONSIDER CRACKING IN SOIL-CEMENT BASES TO BE CAUSED BY STRESSES INDUCED BY SHRINKAGE AND AMBIENT TEMPERATURE. WHEN THE SHRINKAGE IS ASSUMED TO BE PROPORTIONAL TO THE MOISTURE LOSS, THE SHRINKAGE STRAIN IS ESTIMATED BY EMPLOYING THE DIFFUSION EQUATION. EXPRESSIONS FOR SHRINKAGE STRESSES ARE DERIVED BY POSTULATING THAT THE MATERIAL OBEYS A LINEAR VISCOELASTIC STRESS STRAIN RELATION (WHEN SUBJECTED TO DEVIANT STRESS) AND USING THE THEORY OF THIN PLATES. THEORETICALLY, SHRINKAGE STRESS IS HIGHLY LOCALIZED ON THE EXPOSED SURFACE AND DECREASES SHARPLY WITH DEPTH. AS LOCALIZED STRESSES EXCEED THE TENSILE STRENGTH OF SOIL-CEMENT, THE SURFACE OF THE SLAB WILL CRACK OR FLOW UNDER STRESS, THE EFFECTS OF VARIOUS PARAMETERS ON THE SHRINKAGE STRESSES, IN TURN ON CRACKING OF THE SOIL-CEMENT BASES, ARE CONSIDERED. MIXING. THE BURNER, EQUIPPED WITH AUTOMATIC CONTROLS,

• Supplemental Notes:
  • PROC PAPER 9454
• Authors:
  • Sanan, B K
  • George, K P
• Publication Date: 1972-5

Media Info

• Pagination: p. 1375-95
• Serial:
  • Roads and Streets
  • Volume: 98
  • Issue Number: sm12
  • Publisher: Donnelley (Reuben H) Corporation

Subject/Index Terms

• TRT Terms: Cracking; Deformation curve; Fracture mechanics; Shrinkage; Soil cement; Viscoelasticity
• Old TRIS Terms: Shrinkage cracks
• Subject Areas: Highways; Materials;

Filing Info

• Accession Number: 00214213
• Record Type: Publication
• Files: TRIS
• Created Date: Apr 2 1973 12:00AM