The effect of p pfa addition on the properties of grc

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Abstract

Bending, tensile and impact properties of grc containing nominally 5 wt% of alkali resistant fibres and up to 50 wt% replacement of cement by pfa have been determined. The composites were kept in three different environments for up to 11 years. The initial strengths of pfa containing grc's are lower than that of grc made from neat OPC due to the cement dilution effect, but the trends in the long-term properties exhibited by these two types of composites are similar. The smallest changes over a period of 10 years are shown by composites kept in relatively dry air whereas wet environments and natural weathering at BRE have brought about significant decreases in the toughness of the material. For composites containing 40% pfa or more the relative changes in bending and tensile strengths after ten years over the initial values are small due to the low initial values of these composites. ?? 1984.

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Singh, B., & Majumdar, A. J. (1985). The effect of p pfa addition on the properties of grc. International Journal of Cement Composites and Lightweight Concrete, 7(1), 3–10. https://doi.org/10.1016/0262-5075(85)90021-1

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