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Article
Affiliation(s)

1. Sumitomo Mitsui Construction Co., Ltd., Chuo-ku, Tokyo 104-0051, Japan
2. Department of Engineering Mechanics and Energy, University of Tsukuba, Tsukuba-city, Ibaraki 305-8573, Japan

ABSTRACT

The authors have proposed the calculation method of bridging law, that is expressed by tensile stress–crack width relationship, considering the influence of fiber orientation in FRCC (fiber-reinforced cementitious composite). The objective of this study is to propose a new tri-linear model that expresses the bridging law considering fiber orientation. The parameters that give the characteristic points of the tri-linear model are proposed as functions of orientation intensity. The bending test, in which the specimens are fabricated by three different casting methods, is conducted to verify the adaptability of the proposed model. The results of section analysis using the proposed model can present the difference of bending strength due to the fiber orientation.

KEYWORDS

FRCC, tensile stress, crack width, tri-linear model, fiber orientation, PVA fiber, bending test, compacting vibrator.

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