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冲击荷载作用下玄武岩纤维增强地质聚合物混凝土的变形特性

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Abstract:

采用φ100mm分离式霍普金森压杆(splitHopkinsonpressurebar,SHPB)试验装置,研究了不同基体强度的玄武岩纤维增强地质聚合物混凝土(basaltfiberreinforcedgeopolymericconcrete,BFRGC)在冲击荷载作用下的变形特性。SHPB结果表明BFRGC的临界应变具有显著的应变率相关性;随着基体强度的增加,BFRGC在冲击荷载作用下的变形能力降低;当玄武岩纤维的体积掺量为0.2%时,玄武岩纤维对地质聚合物混凝土的变形能力的改善效果最佳。

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