ADMIXTURE COMPATIBILITY IN SPECIAL CONCRETES

Concrete is no longer produced as a rational mixture of just cement, stone and water. It has matured to a mixture which includes both chemical and mineral admixtures. A mixture of admixtures is used to obtain special concretes that are characterized by very high flow, good cohesion and self-leveling properties, that can be placed underwater without the aid of tremies, that expand and induce compressive stresses or reduce shrinkage, and can be placed and cured at sub-zero temperatures. The use of a mixture of admixtures in a single mix however, raises compatibility issues which need to be rectified prior to field use. Specific incompatibilities between certain admixtures are cited and the manner of resolving such problems discussed.

Language

  • English

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 615-634

Subject/Index Terms

Filing Info

  • Accession Number: 00766041
  • Record Type: Publication
  • Report/Paper Numbers: SP 186-36
  • Files: TRIS
  • Created Date: Jul 9 1999 12:00AM