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Computers and Concrete
  Volume 10, Number 2, August 2012, pages 105-119

Flexural performance and fiber distribution of an extruded DFRCC panel
Bang Yeon Lee, Byung-Chan Han, Chang-Geun Cho and Yun Yong Kim

    This paper presents the mix composition and production method that was applied to an extruded Ductile Fiber Reinforced Cement Composite (DFRCC) panel, as well as the flexural performance, represented by deformation hardening behavior with multiple cracking. The effect of fiber distribution characteristics on the flexural behavior of the panel is also addressed. In order to demonstrate the fiber distribution effect, a series of experiments and analyses, including a sectional image analysis and micromechanical analysis, was performed. From the experimental and analysis results, it was found that the flexural behavior of the panel was highly affected by a slight variation in the mix composition. In terms of the average fiber orientation, the fiber distribution was found to be similar to that derived under the assumption of a two-dimensional random distribution, irrespective of the mix composition. In contrast, the probability density function for the fiber orientation was measured to vary depending on the mix composition.
Key Words
    extruded DFRCC panel; image analysis; fiber distribution; flexural behavior.
Bang Yeon Lee: School of Architecture, Chonnam National University, Gwangju, Korea; Byung-Chan Han: Department of Remolding Architecture, Woosong Information College, Daejeon 300-715, Korea; Chang-Geun Cho: School of Architecture, Chosun University, Gwangju, Korea; Yun Yong Kim: Chungnam National University, Daejeon, Korea

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