This paper presents the materials, production process, and mix proportion applied to an ex- truded ECC panel and the effect of the fiber distribution characteristics, which are uniquely obtained with ap- plication of the extrusion process, on the flexural behavior…
This paper presents the materials, production process, and mix proportion applied to an ex- truded ECC panel and the effect of the fiber distribution characteristics, which are uniquely obtained with ap- plication of the extrusion process, on the flexural behavior of the panel. In order to demonstrate the fiber dis- tribution effect, a series of experiments and analyses, including a sectional image analysis and micro- mechanical analysis, was performed. From test results, it was found that the flexural behavior of the panel was highly affected by slight variation in the mix composition. This is mainly attributable to the difference in mix composition resulting in change of the micro-mechanical properties as well as fiber distribution characte- ristics. 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 con- trast, the probability density function for the fiber orientation was measured to vary extensively depending on the mix composition.