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Flexural characteristics of coir fiber reinforced cementitious composites

Li, Zhijian, Wang, Lijing and Wang, Xungai 2006, Flexural characteristics of coir fiber reinforced cementitious composites, Fibers and polymers, vol. 7, no. 3, pp. 286-294.

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Title Flexural characteristics of coir fiber reinforced cementitious composites
Author(s) Li, Zhijian
Wang, Lijing
Wang, Xungai
Journal name Fibers and polymers
Volume number 7
Issue number 3
Start page 286
End page 294
Publisher Korean Fiber Society
Place of publication Seoul, Korea
Publication date 2006-09
ISSN 1229-9197
1875-0052
Keyword(s) coir fibers
mechanical properties
fracture toughness
cement
surface treatments
Summary This study has examined the flexural properties of natural and chemically modified coir fiber reinforced cementitious composites (CFRCC). Coir fibers of two different average lengths were used, and the longer coir fibers were also treated with a 1 % NaOH solution for comparison. The fibers were combined with cementitious materials and chemical agents (dispersant, defoamer or wetting agent) to form CFRCC. The flexural properties of the composites, including elastic stress, flexural strength, toughness and toughness index, were measured. The effects of fiber treatments, addition of chemical agents and accelerated ageing of composites on the composites’ flexural properties were examined. The results showed that the CFRCC samples were 5–12 % lighter than the conventional mortar, and that the addition of coir fibers improved the flexural strength of the CFRCC materials. Toughness and toughness index, which were associated with the work of fracture, were increased more than ten times. For the alkalized long coir fiber composites, a higher immediate and long-term toughness index was achieved. SEM microstructure images revealed improved physicochemical bonding in the treated CFRCC.
Notes The original publication is available at springerlink.com.
Language eng
Field of Research 091202 Composite and Hybrid Materials
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2006, Springer
Persistent URL http://hdl.handle.net/10536/DRO/DU:30003650

Document type: Journal Article
Collections: Centre for Material and Fibre Innovation
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