Admixture Compatibility in Special Concretes


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Title: Admixture Compatibility in Special Concretes

Author(s): N. P. Mailvaganam

Publication: Special Publication

Volume: 186


Appears on pages(s): 615-634

Keywords: chemical mineral admixtures; compatibility; concretes

Date: 5/1/1999

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 place 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 I a single mix Specific incompatibilities between certain admixtures are cited and the manner of resolving such problems discussed.