Journal
CEMENT & CONCRETE COMPOSITES
Volume 27, Issue 5, Pages 575-582Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.cemconcomp.2004.09.008
Keywords
natural fibres; durability; chemical composition; compressive and flexural strengths; cement mortar
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This paper presents the results of the variation in chemical composition and tensile strength of coir, sisal, jute and Hibiscus Cannabinus fibres, when they are subjected to alternate wetting and drying and continuous immersion for 60 days in three mediums (water. saturated time and sodium hydroxide). Compressive and flexural strengths of cement mortar (1:3) specimens reinforced with dry and corroded fibres were determined after 28 days of normal curing. From the results it is observed that there is substantial reduction ill the salient chemical composition of all the four fibres, after exposure in the various mediums. Coir fibres are found to retain higher percentages of their initial strength than all other fibres, after the specified period of exposure in the various mediums. The compressive and flexural strengths of all natural fibre reinforced mortar specimens using corroded fibres are less than the strength of the reference mortar (i.e. without fibres) and fibre reinforced mortar specimens reinforced with dry natural fibres. (c) 2004 Elsevier Ltd. All rights reserved.
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