Journal
CONSTRUCTION AND BUILDING MATERIALS
Volume 25, Issue 2, Pages 670-677Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2010.07.022
Keywords
Carbon fiber; Cement composites; Flexural behavior; Crack-stress; Ultimate-stress; Young's modulus
Categories
Funding
- Japanese Government [18580243]
- Grants-in-Aid for Scientific Research [18580243, 22580271] Funding Source: KAKEN
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It is evident that the carbon-fiber-reinforced cementitious composites are being used in the structural and construction works owing to the synergetic action from two components viz, fiber and mortar matrix. Incorporation of a very nominal percentage of carbon fibers into a mortar mixture produces a strong and durable composite that leads the product of smart material properties. Flexural behavior of cement-based matrices carrying carbon fibers reinforcement of different percentage and size is studied in this paper. Influence of fiber content and length of the fiber is quantified using load-deflection curves. Specimens containing fiber of 0.0, 0.5, 1.0 and 1.5% with 3 mm (0.12 in.), 6 mm (0.36 in.), and their combination are prepared and tested. It is demonstrated that combination of 3 mm (0.12 in.) and 6 mm (0.36 in.) fibers enhances the bearing capacity to crack- and ultimate-stresses as well as the Young's modulus of the fiber reinforced cement composites. The paper emphasizes the desired performances after the initiation of cracks and discusses the pre- and post-cracking load-deflection characteristics of the composites. (C) 2010 Elsevier Ltd. All rights reserved.
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