Self-healing Capability of Ultra-High-Performance Fiber-Reinforced Concrete ( UHP-FRC )

Content Provider	Semantic Scholar
Author	Nishiwaki, Tatsuya Mihashi, Hirozo
Copyright Year	2015
Abstract	ID No: 258 ABSTRACT UHP-FRC (ultra-high-performance fiber-reinforced concrete) is being successfully developed in the last decade, which shows the high strength and high durability due to its very dense microstructures. Moreover, incorporation of fibers in the mix design of UHP-FRC exhibits the high ductility and high energy absorption capacity. The high ductility of UHP-FRC materials shows pseudo-strain hardening behavior and multiple cracking after the occurrence of the first crack under uniaxial tension. Generally, presence of cracks is not desirable from durability viewpoint. That is, presence of cracks should be recovered in order to sustain durability of UHP-FRC. Here, selfhealing phenomena might be strongly helpful to coexistence of the characteristics of multiple cracks. In this study, the potential of self-healing capability of UHP-FRC was investigated. As a result, it is confirmed that cracked UHP-FRC could be recovered by precipitation of calcium carbonate crystals.UHP-FRC (ultra-high-performance fiber-reinforced concrete) is being successfully developed in the last decade, which shows the high strength and high durability due to its very dense microstructures. Moreover, incorporation of fibers in the mix design of UHP-FRC exhibits the high ductility and high energy absorption capacity. The high ductility of UHP-FRC materials shows pseudo-strain hardening behavior and multiple cracking after the occurrence of the first crack under uniaxial tension. Generally, presence of cracks is not desirable from durability viewpoint. That is, presence of cracks should be recovered in order to sustain durability of UHP-FRC. Here, selfhealing phenomena might be strongly helpful to coexistence of the characteristics of multiple cracks. In this study, the potential of self-healing capability of UHP-FRC was investigated. As a result, it is confirmed that cracked UHP-FRC could be recovered by precipitation of calcium carbonate crystals.
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Alternate Webpage(s)	http://icshm2015.pratt.duke.edu/sites/icshm2015.pratt.duke.edu/files/webform/extendedabstracts/Kwon_ICSHM2015.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article