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Materials 2015, 8(10), 6719-6727;

Bonding Properties of Basalt Fiber and Strength Reduction According to Fiber Orientation

School of Architecture, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju 61186, Korea
Author to whom correspondence should be addressed.
Academic Editor: Jérôme Chevalier
Received: 23 July 2015 / Revised: 10 August 2015 / Accepted: 23 September 2015 / Published: 30 September 2015
(This article belongs to the Section Advanced Composites)
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The basalt fiber is a promising reinforcing fiber because it has a relatively higher tensile strength and a density similar to that of a concrete matrix as well as no corrosion possibility. This study investigated experimentally the bonding properties of basalt fiber with cementitious material as well as the effect of fiber orientation on the tensile strength of basalt fiber for evaluating basalt fiber’s suitability as a reinforcing fiber. Single fiber pullout tests were performed and then the tensile strength of fiber was measured according to fiber orientation. The test results showed that basalt fiber has a strong chemical bond with the cementitious matrix, 1.88 times higher than that of polyvinyl alcohol fibers with it. However, other properties of basalt fiber such as slip-hardening coefficient and strength reduction coefficient were worse than PVA and polyethylene fibers in terms of fiber bridging capacity. Theoretical fiber-bridging curves showed that the basalt fiber reinforcing system has a higher cracking strength than the PVA fiber reinforcing system, but the reinforcing system showed softening behavior after cracking. View Full-Text
Keywords: chemical bond; frictional bond; orientation; tensile strength; basalt fiber chemical bond; frictional bond; orientation; tensile strength; basalt fiber

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Choi, J.-I.; Lee, B.Y. Bonding Properties of Basalt Fiber and Strength Reduction According to Fiber Orientation. Materials 2015, 8, 6719-6727.

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