Natural fibres wetting/drying cycles

Figure 11.19 The effect of exposure to wetting-drying cycles on the strength of different natural fibres (after Lewis and Mirihagalia [58]).

Figure 11.20 Effect of matrix composition and ageing on the strength and toughness relative to the control of sisal-cement composite normal-untreated matrix, carbonation curing of composite and silica fume slurry treatment of fibres (adopted from the data of Filho etal. [67]). Control-28 days of normal curing water-322 days in water wet/dry-46 cycles natural-outdoor exposure.

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