Title:
Long-Term Properties of High-Strength Concretes
Author(s):
Henry G. Russell
Publication:
Concrete International
Volume:
16
Issue:
4
Appears on pages(s):
57-58
Keywords:
compressive strength; creep tests; high-strength concretes; materials tests; modulus of elasticity; reinforcing steels; Materials Research
DOI:
Date:
4/1/1994
Abstract:
When topped out in 1975 at a height of 859 ft (262 m), Chicago's Water Tower Place was the world's tallest reinforced concrete building. Furthermore, it represented one of the larger uses of concretes with design compressive strengths in excess of 6000 psi (41 MPa). High-strength concrete was used in the tower columns and shearwalls of the building up to the 55th level. As part of a research project sponsored by the National Science Foundation and the Portland Cement Association, samples of concrete were obtained at the site and used for measurements of material properties. The project was continued for a period of 5 years and the results have been reported.