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首页> 外文期刊>Materials and structures >Tensile response of Ultra High Performance PE Fiber Reinforced Concretes (PE-UHPFRC) under imposed shrinkage deformations
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Tensile response of Ultra High Performance PE Fiber Reinforced Concretes (PE-UHPFRC) under imposed shrinkage deformations

机译：施加收缩变形下超高效PE纤维增强混凝土（PE-UHPFRC）的拉伸响应

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摘要

PE-UHPFRC is a new Ultra High-Performance Fiber Reinforced Concrete (UHPFRC), which is developed to reduce the environmental impact of conventional UHPFRC by replacing the steel fibers with synthetic ones and reducing the clinker content in the mix. The development of the dynamic elastic modulus, the evolution of free autogenous deformations and the eigenstresses development with age, under full and partial restraint conditions, were investigated for PE-UHPFRC and the results were put into perspective with that for conventional UHPFRC with steel fibers. Furthermore, the tensile responses of different mixes under imposed shrinkage were compared and discussed. The results showed a shorter setting time and consequently an earlier initiation of elastic modulus development for PE-UHPFRC compared with that of conventional UHPFRC. Furthermore, the developed eigenstresses under full restraint conditions in a PE-UHPFRC layer compared with that for conventional UHPFRC were reduced by more than 70%, which is highly beneficial especially for cast-in-place rehabilitation applications.
机译：PE-UHPFRC是一种新型超高性能纤维钢筋混凝土（UHPFRC），由用合成钢纤维更换并减少混合物中的熟料含量来减少常规UHPFRC的环境影响。对PE-UHPFRC研究了动态弹性模量，自由闭合变形的演变和随着年龄的抑制条件的延长的发展，并将结果与​​钢纤维的常规UHPFRC进行了透视。此外，比较并讨论了不同混合物在施加的收缩下的拉伸反应。结果表明，与常规UHPFRC相比，该设定时间较短，从而较短的PE-UHPFRC对弹性模量发育的开始。此外，与常规UHPFRC的PE-UHPFRC层的完全约束条件下发育的特征分子减少了超过70％，这对铸造康复应用特别有益。

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  • 来源
    《Materials and structures》 |2021年第3期|114.1-114.12|共12页
  • 作者

    Hajiesmaeili A.; Hafiz M. A.; Denarie E.;

  • 作者单位

    Ecole Polytech Fed Lausanne Maintenance & Safety Struct Stn 18 GC A3 398 CH-1015 Lausanne Switzerland;

    Ecole Polytech Fed Lausanne Maintenance & Safety Struct Stn 18 GC A3 398 CH-1015 Lausanne Switzerland;

    Ecole Polytech Fed Lausanne Maintenance & Safety Struct Stn 18 GC A3 398 CH-1015 Lausanne Switzerland;

  • 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

    UHPFRC; UHMW-PE; PE-UHPFRC; Autogenous shrinkage; Eigenstresses; TSTM; Tensile response;

    机译：UHPFRC;UHMW-PE;PE-UHPFRC;自生收缩;特征术;TSTM;拉伸反应;

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