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首页> 外文期刊>Construction and Building Materials >Experimental research on ductility enhancement of ultra-high performance concrete incorporation with basalt fibre, polypropylene fibre and glass fibre
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Experimental research on ductility enhancement of ultra-high performance concrete incorporation with basalt fibre, polypropylene fibre and glass fibre

机译：玄武岩纤维，聚丙烯纤维和玻璃纤维延展性提高超高性能混凝土掺入的试验研究

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摘要

The research aims to enhance the ductility characteristics of ultra-high performance concrete fibre material (UHPC-FM) comprising with different micro-synthetic fibres such as basalt fibre (BF) polypropylene fibre (PPF) and glass fibre (GF). As a sequence, consecutive dosages of these fibres such as 0.5%, 1.0%, 1.5%, 2.0%, and 2.5% of volumetric fractions were introduced into the mixes for preparing the UHPC-FM to achieve the goals. The observed results showed that both the type and amount of added fibres influenced on the properties of fresh and hardened UHPC-FM concretes. In addition, higher contents of fibre filament (FFs) resulted a decreasing trend in flow of fresh UHPC-FM mixtures, where pastes with PPF demonstrated the highest fluidity property. Moreover, compressive strength (CS) increased upon addition of 0.5% FFs and linearly decreased for introducing the higher amounts. Compared with the control specimen (UHPC-A0), the flexural strength of samples containing 2.5% BF, PPF and GF increased by 20.8%, 26.9%, and 27.9%, respectively. Modulus of rupture increased by 20.04% in case of BF, 24.92% for PPF and 26.05% for GF when compared with reference sample (8429.5-kN). Toughness indexes of BF, PPF and GF based UHPC-FM samples were around 4.64, 4.75 and 4.86 times higher respectively, in comparison to the control specimens. The microstructure observation and drying shrinkage test illustrate fiber can modify UHPC well, which corroborated the results of mechanical properties exactly. In addition, the results of the current test can be applied for ultra-high-performance (UHPC) panels and vibration-free UHPC material. (C) 2021 Elsevier Ltd. All rights reserved.
机译：该研究旨在增强超高性能混凝土纤维材料（UHPC-FM）的延展性特性，其包含不同的微合成纤维，例如玄武岩纤维（BF）聚丙烯纤维（PPF）和玻璃纤维（GF）。作为序列，将这些纤维的连续剂量如0.5％，1.0％，1.5％，2.0％和2.5％的体积级分引入混合物中，以制备UHPC-FM以实现目标。所观察结果表明，添加的纤维的类型和量影响了新鲜和硬化UHPC-FM混凝土的性质。此外，纤维丝（FFS）的含量较高导致新鲜UHPC-FM混合物流动的趋势降低，其中具有PPF的浆料证明了最高的流动性。此外，在加入0.5％FF时增加抗压强度（CS），并线性降低以引入较高量。与对照样品（UHPC-A0）相比，含有2.5％BF，PPF和GF的样品的弯曲强度分别增加了20.8％，26.9％和27.9％。在BF的情况下，破裂模量增加了20.04％，与参考样品相比，PPF的PPF和26.05％的26.05％（8429.5 kN）。与对照样品相比，基于BF，PPF和GF基的UHPC-FM样品的韧性指数分别为4.64,4.75和4.86倍。微观结构观察和干燥收缩试验说明纤维可以修饰UHPC井，其精确地证实了机械性能的结果。此外，目前测试的结果可以应用于超高性能（UHPC）板和无振uHPC材料。 （c）2021 elestvier有限公司保留所有权利。

著录项

  • 来源
    《Construction and Building Materials》 |2021年第12期|122489.1-122489.15|共15页
  • 作者

    Yan Pei; Chen Bing; Afgan Sher; Haque M. Aminul; Wu Meng; Han Jiaxing;

  • 作者单位

    Shanghai Jiao Tong Univ State Key Lab Ocean Engn Shanghai 200240 Peoples R China|Shanghai Jiao Tong Univ Dept Civil Engn Shanghai Key Lab Digital Maintenance Bldg & Infra Shanghai 20024 Peoples R China;

    Shanghai Jiao Tong Univ State Key Lab Ocean Engn Shanghai 200240 Peoples R China|Shanghai Jiao Tong Univ Dept Civil Engn Shanghai Key Lab Digital Maintenance Bldg & Infra Shanghai 20024 Peoples R China;

    Shanghai Jiao Tong Univ State Key Lab Ocean Engn Shanghai 200240 Peoples R China|Shanghai Jiao Tong Univ Dept Civil Engn Shanghai Key Lab Digital Maintenance Bldg & Infra Shanghai 20024 Peoples R China;

    Shanghai Jiao Tong Univ State Key Lab Ocean Engn Shanghai 200240 Peoples R China|Shanghai Jiao Tong Univ Dept Civil Engn Shanghai Key Lab Digital Maintenance Bldg & Infra Shanghai 20024 Peoples R China;

    Shanghai Ershiye Construct Co Ltd Shanghai 201900 Peoples R China;

    Shanghai Ershiye Construct Co Ltd Shanghai 201900 Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Ultra-high performance concrete; Micro-fibres; Compressive strength; Flexural strength; Load-deflection curve; Toughness index;

    机译：超高性能混凝土;微纤维;抗压强度;弯曲强度;载荷偏转曲线;韧性指数;

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