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)
Cite this
Monitoring fiber dispersion in fiber-reinforced cementitious materials : Comparison of AC-impedance spectroscopy and image analysis. / Ozyurt, Nilufer; Woo, Leta Y.; Mason, Thomas O; Shah, Surendra P.
In: ACI Materials Journal, Vol. 103, No. 5, 09.2006, p. 340-347.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Monitoring fiber dispersion in fiber-reinforced cementitious materials
T2 - Comparison of AC-impedance spectroscopy and image analysis
AU - Ozyurt, Nilufer
AU - Woo, Leta Y.
AU - Mason, Thomas O
AU - Shah, Surendra P.
PY - 2006/9
Y1 - 2006/9
N2 - 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.
AB - 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.
KW - Fiber-reinforced cementitious materials
KW - Fibers
KW - Testing
UR - http://www.scopus.com/inward/record.url?scp=33845444391&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33845444391&partnerID=8YFLogxK
M3 - Article
VL - 103
SP - 340
EP - 347
JO - ACI Materials Journal
JF - ACI Materials Journal
SN - 0889-325X
IS - 5
ER -