Title:
Short-Term Mechanical Properties of High-Strength Concrete
Author(s):
Andrew Logan, Wonchang Choi, Amir Mirmiran, Sami Rizkalla, and Paul Zia
Publication:
Materials Journal
Volume:
106
Issue:
5
Appears on pages(s):
413-418
Keywords:
compressive strength; elastic modulus; high-strength concrete; modulus of rupture; Poisson’s ratio.
DOI:
10.14359/51663141
Date:
9/1/2009
Abstract:
A comprehensive experimental program was undertaken to determine the short-term mechanical properties of high-strength concrete (HSC). Modulus of rupture beams and two different sizes of concrete cylinders with three different target compressive strengths ranging from 10 to 18 ksi (69 to 124 MPa) were subjected to three different curing methods and durations. Test results were combined with data from the literature to improve predictive equations for the elastic modulus and modulus of rupture of HSC. Of the three different curing methods, cylinders moist-cured for 7 days exhibited the highest compressive strengths at ages of 28 and 56 days. In contrast, 1-day heat curing generally resulted in the lowest compressive strength. The study shows that a Poisson’s ratio of 0.2 can be adequately used for HSC.