REHYDRATION OF PORTLAND CEMENT

UEBER DIE REHYDRATATION VON PORTLANDZEMENT

When Portland cement is used in refractory concrete, rehydration takes place as a result of the formation of free lime after burning of the concrete. The conditions of rehydration and formation of new combinations are examined by means of differential thermoanalysis and thermo- gravimetric analysis. Results show that the rehydration mechanism is influenced mainly by humidity and CO2. As the blast-furnace slag content of Portland cement increases, the intensity of rehydration decreases because the slag combines with the free lime. /IRRD/

• Corporate Authors:

  Bauverlag GmbH

  Wittelbacherstrasse 10
  6200 Wiesbaden,   Germany 
• Authors:
  • Lach, V
• Publication Date: 1970-2

Language

• German

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 57-61
• Serial:
  • Zement-Kalk-Gips
  • Issue Number: 2

Subject/Index Terms

• TRT Terms: Calcium oxide; Carbon dioxide; Concrete; Differential thermal analysis; Humidity; Hydration; Machines; Portland cement; Slag; Thermogravimetric analysis
• Old TRIS Terms: Mechanisms
• Subject Areas: Highways; Materials;

Filing Info

• Accession Number: 00081887
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Files: ITRD, TRIS
• Created Date: Apr 22 1975 12:00AM