Abstract In this work, geopolymer foam composites containing waste basalt fibre (10, 30, and 50%wt) were exposed to elevated temperatures of 200, 400, 600, 800 and 1000∘C. With an increase in high temperature, the geopolymer foams material exhibits a decrease in compressive strength and bending strength. When heated above 600∘C, geopolymer foams materials exhibit a significant reduction in mechanical properties. It shows clearly with the naked eye that surface cracks in case of samples containing 10% of basalt filler. However, when increasing fillers with basalt fibres up to 30% and 50%, the cracking of the sample surface is no longer visible to the naked eye. Especially when the temperature increases, the mechanical properties also increase without decreasing in the sample of 50% by weighing to the binder. The results show that reinforcing the geopolymer foams with basalt ground fibre improves the mechanical properties at high temperatures.

中文翻译：

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地质聚合物泡沫的高温力学性能

摘要 在这项工作中，含有废玄武岩纤维（10%、30% 和 50%wt）的地质聚合物泡沫复合材料暴露于 200、400、600、800 和 1000°C 的高温下。随着高温的增加，地质聚合物泡沫材料表现出抗压强度和弯曲强度的降低。当加热到 600∘C 以上时，地质聚合物泡沫材料的机械性能会显着降低。肉眼可见，玄武岩填料含量为10%的样品表面会出现裂纹。但是，当玄武岩纤维的填料增加到30%和50%时，样品表面的开裂不再是肉眼可见的。特别是当温度升高时，机械性能也增加，而样品重量为粘合剂的 50% 没有降低。