Open Access

ARTICLE

Micromechanics-Based Fiber-Bridging Analysis of Strain-Hardening Cementitious Composite Accounting for Fiber Distribution

by

1 University of Michigan, Ann Arbor, U.S.A.
2 Daejeon University, Daejeon, 300-716, Republic of Korea
3 Korea Advanced Institute of Science and Technology, Daejeon, 305-701, Republic of Korea
4 Corresponding Author: Chungnam National University, Daejeon, 305-764, Republic of Korea, Phone: +82-42-821-7004, Fax: +82-42-825-0318, E-mail: yunkim@cnu.ac.kr

Computer Modeling in Engineering & Sciences 2010, 61(2), 111-132. https://doi.org/10.3970/cmes.2010.061.111

Abstract

In the present work, a micromechanics-based fiber-bridging constitutive model that quantitatively takes into consideration the distribution of fiber orientation and the number of fibers, is derived and a fiber-bridging analysis program is developed. An image processing technique is applied to evaluate the fiber distribution characteristics of four different types of strain-hardening cementitious composites. Then, the fiber-bridging curves obtained from image analysis are compared with those obtained from the assumption of two- and three-dimensional fiber distributions. The calculated ultimate tensile strains are also compared with experimental results. Test results showed that the tensile behavior of strain-hardening cementitious composites can be more accurately predicted and analyzed using the fiber-bridging curve obtained from image analysis.

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Keywords

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