Open Access

ABSTRACT

Evaluation of fiber dispersion of PVA-ECC

Y. Y. Kim¹, B. Y. Lee², J. K. Kim²

1 Dept. of Civil Engineering, Chungnam National University, Korea
2 Dept. of Civil & Environmental Engineering, Korea Advanced Institute Science and Technology, Korea

The International Conference on Computational & Experimental Engineering and Sciences 2008, 7(4), 167-172. https://doi.org/10.3970/icces.2008.007.167

Abstract

The fiber dispersion performance in fiber-reinforced cementitious composites is a crucial factor with respect to achieving desired mechanical performance. However, evaluation of the fiber dispersion performance in the composite PVA-ECC (Polyvinyl alcohol-Engineered Cementitious Composite) is extremely challenging because of the low contrast of PVA fibers with the cement-based matrix. In the present work, an enhanced image processing technique including more detailed classification of types of fibers and adaptation of a morphological reconstruction, the fiber detection performance is enhanced. Test results using artificial and real fiber images showed that a distribution coefficient α_f, referred to as the fiber dispersion coefficient was calculated reasonably and the fiber detection performance was enhanced.

---