KINETICS OF THE STRENGTH OF HARDENED PORTLAND CEMENT PASTE

KINETIKA PROCHNOSTI PORTLANDTSEMENTHOGO KAMIYA

AN INITIAL RAPID HARDENING RATE IS HARMFUL TO THE FINAL STRENGTH OF HARDENED CEMENT. THIS CAN PERHAPS BE EXPLAINED BY THE FACT THAT A MORE RAPID INCREASE IN STRENGTH LEADS TO THE FORMATION OF A DENSER CEMENT GEL, WHICH IN TURN LEADS TO A MARKED DECREASE IN HYDRATION DEPTH AND A LOWERING OF THE FINAL STRENGTH. STRENGTH AND SPECIFIC SURFACE MEASUREMENTS TOGETHER WITH ELECTRON MICROSCOPIC ANALYSES SUPPORT THESE CONCLUSIONS. THE HARDENING OF PORTLAND CEMENT SEEMS TO SLOW DOWN PROPORTIONALLY TO THE SQUARE OF THE SPECIFIC RATE OF HARDENING. A RELATION FOR CALCULATING THE RELATIVE FINAL STRENGTH (% OF THE STRENGTH AT 28 DAYS) AS A FUNCTION OF THE SPECIFIC RATE OF HARDENING AND OF THE C3S CONTENT SEEMS TO BE VERIFIED WITH SUFFICIENT ACCURACY BY EXPERIMENTAL DATA.

• Corporate Authors:

  Mezhdunarodanya Kniga

  Smolenskaja Ploscad 32/34
  Moscow G-200,   USSR 
• Authors:
  • Popovich, S
• Publication Date: 1972-3

Language

• Russian

Media Info

• Features: Photos; References;
• Pagination: p. 23-24
• Serial:
  • Beton I Zhelezobeton
  • Issue Number: 3

Subject/Index Terms

• TRT Terms: Calcium; Cement; Cement paste; Colloids; Concrete hardening; Formulas; Hardness; Hydration; Specific surface; Speed; Strength of materials; Sulfates
• ITRD Terms: 1757: Age; 7178: Calcium; 4758: Cement; 4767: Cement paste; 4722: Hardening; 6136: Measurement; 4714: Mix design; 5929: Specific surface; 5408: Speed; 5544: Strength (mater); 7310: Sulphate; 6722: Temperature
• Subject Areas: Highways; Materials; Planning and Forecasting; I32: Concrete; I72: Traffic and Transport Planning;

Filing Info

• Accession Number: 00083619
• Record Type: Publication
• Source Agency: Laboratoire Central des Ponts et Chausees (LCPC)
• Files: ITRD, TRIS
• Created Date: May 1 1975 12:00AM