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Behaviour of engineered cementitious composites and hybrid engineered cementitious composites at high temperatures

机译：工程水泥复合材料和混杂工程水泥复合材料在高温下的行为

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The behaviour of engineered cementitious composites (ECC) specimens using polyvinyl alcohol (PVA) fibres and hybrid engineered cementitious composites (HECC) using PVA fibres and steel fibres (two different types) was experimentally investigated. The experiments included compression and flexural tests at different temperatures ranging from 20 degrees C to 600 degrees C. Under uniaxial compression load the HECCs specimens produced less debris (from 200 degrees C to 600 degrees C) compared to ECC counterparts. The flexural tests results revealed that the load bearing capacity and deflection of HECCs specimens were less vulnerable up to 100 degrees C compared to ECC specimens. Under higher temperatures the ECC specimens' behaviour was brittle, while HECCs specimens exhibited a deflection-softening behaviour. Then a finite element model was employed to investigate the flexural tests results obtained from experiments. (C) 2017 Elsevier Ltd. All rights reserved.
机译：实验研究了使用聚乙烯醇（PVA）纤维的工程水泥复合材料（ECC）标本和使用PVA纤维和钢纤维（两种不同类型）的混合工程水泥复合材料（HECC）的行为。实验包括在20摄氏度至600摄氏度的不同温度下进行的压缩和弯曲测试。与ECC对应物相比，在单轴压缩载荷下，HECCs样品产生的碎屑更少（从200摄氏度至600摄氏度）。弯曲试验结果表明，与ECC试样相比，HECC试样在100摄氏度以下的承载能力和挠度不那么容易受到伤害。在较高的温度下，ECC试样的行为是脆性的，而HECC试样则表现出挠曲软化的行为。然后，采用有限元模型来研究从实验中获得的挠曲测试结果。 （C）2017 Elsevier Ltd.保留所有权利。

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