Title:
Proportioning High-Strength Concrete to Control Creep and Shrinkage
Author(s):
Therese M. Collins
Publication:
Materials Journal
Volume:
86
Issue:
6
Appears on pages(s):
576-580
Keywords:
aggregate size; cement content; creep properties; creep tests; high-strength concretes; mix proportioning; shrinkage; strains; Materials Research
DOI:
10.14359/2211
Date:
11/1/1989
Abstract:
The results of an experimental creep and shrinkage program of high-strength concrete is presented. Variations in paste content and maximum aggregate size are investigated. Five test mixes were prepared based on historical data. The mixes varied in paste content, aggregate size, and the use of high-range water-reducing admixtures. The creep test conditions varied only in intensity of load. The results of the test program showed that creep and shrinkage deformation are somewhat less for concrete mixtures with lower paste contents and larger aggregate size. Although creep and shrinkage may be reduced by careful mixture proportioning and aggregate selection, the applied stress level (creep load) has a much more significant effect on column shortening.