Comparison between Mechanical Properties of Dam and Sieved Concretes
Publication: Journal of Materials in Civil Engineering
Volume 20, Issue 4
Abstract
This technical note presents the behavior of dam and sieved concretes in uniaxial tension and compression together with the effects of curing age on large size specimens of (prism shape) and (cube shape) and small size specimens of and , respectively. The complete stress–strain curves both in tension and compression were acquired through a systematic experimental program. The specimen ages varied from 7 to 180 days. Models with hyperbolic form are proposed to estimate the tensile and compressive strengths, the elastic modulus, and the fracture parameters of the concretes with effects of specimen ages. On top of that, the maximum crack width, fracture energy, and brittleness of dam concretes were also obtained based on the stress–deformation curves. It was found that the strengths, modulus of elasticity, and fracture energy increase with specimen age, and that the specimen size and maximum aggregate diameter significantly affect the fracture energy, peak strain, and crack width of concretes in uniaxial tension.
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Acknowledgments
This work was partly supported by the National Science Foundation of China (Grant Nos. 50579096 and 50378006).
References
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© 2008 ASCE.
History
Received: Aug 22, 2002
Accepted: Jul 25, 2007
Published online: Apr 1, 2008
Published in print: Apr 2008
Notes
Note. Associate Editor: Jason Weiss
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