The effect of silica fume and metakaolin on glass-fibre reinforced concrete (GRC) ageing
DOI:
https://doi.org/10.3989/mc.2010.52009Keywords:
glass fibres, mortar, durability, ageing, silica fume, pozzolanAbstract
The deterioration of the mechanical properties of glassfibre reinforced concrete (GRC) over time rules out the use of this material in load-bearing structures. While one possible solution to this problem is the addition of pozzolans or metakaolin to the cement mortar, the amounts needed to ensure GRC integrity raise its price to non-competitive levels. Experimental research has been conducted to analyze whether the addition of small amounts of silica fume or metakaolin can prevent or mitigate the ageing issue. Unfortunately, the findings indicate that the addition of small proportions of metakaolin or silica fume to GRC are ineffective in improving its long-term performance.
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