Experimental Study on Flexural Fatigue Property of Ultra-High Toughness Cementitious Composites

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This paper presents an experimental study on the flexural fatigue characteristics of Ultra-High Toughness Cementitious Composites (UHTCC), in contrast with plain concrete and Steel Fiber Reinforced Concrete (SFRC) which have similar compressive strength. The results show that UHTCC improves fatigue life and exhibits a bi-linear fatigue stress-life relationship. The deflection ability, failure characteristics of UHTCC were investigated in the tests. It was observed that, similar to static loading situation, multiple cracks were formed under fatigue loading, while the number of cracks decreased with the degradation of stress levels. For this reason, the deformability is much weaker at lower fatigue stress levels than that at higher stress levels. Moreover, the failure section is divided into three different districts, and the proportion of fiber rupture to fiber pullout is different under different stress levels.

Info:

Periodical:

Advanced Materials Research (Volumes 150-151)

Edited by:

Jinglong Bu, Zhengyi Jiang and Sihai Jiao

Pages:

1369-1378

DOI:

10.4028/www.scientific.net/AMR.150-151.1369

Citation:

S. L. Xu and W. Liu, "Experimental Study on Flexural Fatigue Property of Ultra-High Toughness Cementitious Composites", Advanced Materials Research, Vols. 150-151, pp. 1369-1378, 2011

Online since:

October 2010

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$35.00

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