Title:
Understanding Cement-SCM-Admixture Interaction Issues
Author(s):
Lawrence R. Roberts and Peter C. Taylor
Publication:
Concrete International
Volume:
29
Issue:
1
Appears on pages(s):
33-41
Keywords:
admixtures; hydration; isothermal calorimetry; mini-slump test; sulfates; supplementary cementitious materials
DOI:
Date:
1/1/2007
Abstract:
Because of the complexity and variety of materials used in modern concrete mixtures, practices that did not cause problems in the past may now lead to poor performance in the form of setting time and strength development problems. The specific interaction between materials may make some mixtures very sensitive to slight changes in temperature or material composition. The purpose of this article is to help concrete mixture designers avoid developing mixtures that are prone to problems by briefly outlining some of these issues, discussing some of their primary causes, and describing steps that can reduce the chance of problems.