Abstract
Fiber dispersion is an important factor that affects both the fresh and hardened state properties of cement-based materials. While there are some well-studied, fundamental methods for monitoring fiber dispersion, most of them are destructive and time-consuming. Previous work has shown that AC-impedance spectroscopy (AC-IS) can be used as an effective tool for nondestructively monitoring fiber dispersion in both the fresh and hardened states of fiber-reinforced cementitious (FRC) materials. AC-IS was found to be sensitive to different dispersion phenomena. In this study, fiber clumping and orientation were studied using image analysis to verify the AC-IS measurements. The results of the two methods agreed well within experimental uncertainty, suggesting that AC-IS can be used as a nondestructive and rapid method for monitoring fiber dispersion in cementitious materials.
| Original language | English |
|---|---|
| Pages (from-to) | 340-347 |
| Number of pages | 8 |
| Journal | ACI Materials Journal |
| Volume | 103 |
| Issue number | 5 |
| Publication status | Published - Sep 2006 |
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Keywords
- Fiber-reinforced cementitious materials
- Fibers
- Testing
ASJC Scopus subject areas
- Building and Construction
- Materials Science(all)