INTERNAL TENSILE STRESSES IN HARDENED CEMENT PASTE CAUSED BY FREEZING OF THE CAPILLARY WATER

ATTNETION IS DRAWN TO THE SIMILARITY OF THE EFFECT OF INTERNAL TENSILE STRESSES CAUSED BY THE FREEZING OF THE CAPILLARY WATER, WHICH RESULTS IN AN INCREASE IN STRENGTH, TO THAT OF THE LATERAL FORCES IN A SAMPLE SUBJECTED TO TRIAXIAL STRESSES. THE MECHANISM OF THE ACTION OF THE WATER IN THE CAPILLARY SYSTEM IS EXPLAINED WITH THE HELP OF THE PRINCIPLES OF POROUS BODY PHYSICS. ONE TEST METHOD USED TO STUDY THE COMPLEX SYSTEM OF HARDENED CEMENT PASTE IS BASED ON THE BEHAVIOR OF HYDRAULIC BINDERS AT VERY LOW TEMPERATURES. TESTS WERE CONDUCTED ON CONCRETE, MORTAR, AND CEMENT PASTE CURED FOR THREE YEARS IN A MOIST ENVIRONMENT AT 20 DEGREES C. THE FACTORS STUDIED WERE: POROSITY MEASUREMENTS, POROSITY SATURATION, FREEZING OF CAPILLARY WATER AND RESULTING INTERNAL STRESSES, AND EFFECT OF RISING TENSILE STRESSES ON THE MECHANICAL STRENGTH OF COOLED CONCRETE. /IRF/

• Corporate Authors:

  Cemento /Italy

  ,    
• Authors:
  • Tognon, G P
  • Ursella, P
• Publication Date: 1970-1

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 33-40
• Serial:
  • Publication of: Cemento /Italy/
  • Issue Number: 1
  • Publisher: Cemento /Italy

Subject/Index Terms

• TRT Terms: Binders; Capillary water; Cement paste; Freezing; Percent saturation; Porosity; Stresses; Tension
• Uncontrolled Terms: Tensile stress; Triaxial stress
• Subject Areas: Highways; Materials;

Filing Info

• Accession Number: 00213175
• Record Type: Publication
• Files: TRIS
• Created Date: May 15 1974 12:00AM