Title:
How Admixtures Affect Shrinkage and Creep
Author(s):
Jeffrey J. Brooks
Publication:
Concrete International
Volume:
21
Issue:
4
Appears on pages(s):
35-38
Keywords:
blast-furnace slag; creep; elasticity; fly ash; plasticizers; shrinkage; silica fume;
superplasticizers
DOI:
Date:
4/1/1999
Abstract:
Using previously published experimental data, the effects of chemical and mineral admixtures on the elastic deformation, creep, and shrinkage of concrete are assessed. The assessment, which is a comparison of deformation of concrete with and without the admixture (no change of mixture proportions) revealed no effect on the elastic modulus-strength relationship and general reductions of creep and shrinkage of 20 percent for concrete containing chemical admixtures. There are also reductions of creep for concretes made with fly ash and blast-furnace slag, but no change in shrinkage.