Influence of Fiber Shape and Water-Binder Ratio on Blast Resistance of PVA Fiber Reinforced Mortar

Influence of Fiber Shape and Water-Binder Ratio on Blast Resistance of PVA Fiber Reinforced Mortar

Danny Triputra SETIAMANAH, Makoto YAMAGUCHI, Priyo SUPROBO, Shintaro MORISHIMA, Zicheng ZHANG, Atsuhisa OGAWA , Takashi KATAYAMA

Abstract. Reducing spall damage is a major problem when designing blast-resistant concrete structures. This study was conducted to evaluate the influence of various material factors on the blast resistance of FRCC slabs under contact detonation. The contact detonation tests were carried out on polyvinyl alcohol fiber reinforced mortar (PVAFRM) slabs with four different shapes of PVA fibers and four different water-binder ratios (W/B) of the mortar matrix. Fly ash (type II) was used as admixture and the fluidity of the PVAFRM in its fresh state was varied using a superplasticizer and thickener. As a result, it was obtained that longer fiber is more effective to suppress spall if the fiber diameter is constant, and if the aspect ratio of fiber (lf/df) is constant, finer fibers are more effective to reduce spall. Moreover, the spall-reducing performance is reduced when the W/B value is too high or too low, and it is considered that there is an appropriate value of W/B that depends on the fiber shape.

Keywords
Fiber Reinforced Mortar, Contact Detonation, Local Failure, Fiber Shape, Water-Binder Ratio

Published online 7/30/2019, 6 pages
Copyright © 2019 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA

Citation: Danny Triputra SETIAMANAH, Makoto YAMAGUCHI, Priyo SUPROBO, Shintaro MORISHIMA, Zicheng ZHANG, Atsuhisa OGAWA , Takashi KATAYAMA, Influence of Fiber Shape and Water-Binder Ratio on Blast Resistance of PVA Fiber Reinforced Mortar, Materials Research Proceedings, Vol. 13, pp 103-108, 2019

DOI: https://doi.org/10.21741/9781644900338-18

The article was published as article 18 of the book Explosion Shock Waves and High Strain Rate Phenomena

Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

References
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[2] M. Morishita et al.: Effects of Concrete Strength and Reinforcing Clear Distance on the Damage of Reinforced Concrete Slabs Subjected to Contact Detonation, Concrete Research and Technology, 15(2), pp.89-98, 2004. https://doi.org/10.3151/crt1990.15.2_89