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An R-Curve Approach for Fracture of Ultra High Performance Cementitious Composites

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Abstract:

An R-curve formula for ultra high performance cementitious composites is derived in this paper. The fracture mechanics based on R-curve is used to predict the load-deflection relation of ultra high performance cementitious composites. The reductions of stress intensity factor and CTOD by steel fiber reinforcement are assumed as conforming linear distribution along crack propagation. The effective numbers of steel fiber on unit area based uniform distribution is used here. Results of the theoretical predictions show a good agreement with test results of three point bending beam of UHPCC. The modified R-curve formula for UHPCC can be a reference for future study of fracture performances of UHPCC.

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Periodical:

Key Engineering Materials (Volumes 348-349)

Pages:

825-828

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.348-349.825

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Online since:

September 2007

Authors:

Xiang Guo Wu, Sang Mook Han, Sung Wook Kim, Su Tae Kang

Keywords:

Fracture Mechanic, R-Curve, Ultra High Performance Cementitious Composites

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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References

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