DURABILITY OF STEEL FIBRE-REINFORCED CONCRETE PRECAST ELEMENTS: EXPERIMENTS AND PROPOSAL OF DESIGN RECOMMENDATIONS

机译：钢纤维混凝土预制构件的耐久性：设计建议的试验和建议

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Durability of Steel Fibre Reinforced Concrete (SFRC) is a crucial topic as far the use of this material for structural purposes is concerned. An extensive experimental I investigation has been carried out by Magnetti Building, in the framework of a wider research project focused on the use of SFRC in precast structural elements. Tests outlined the key role played by matrix porosity, fibre microstructure and reactions occurring at the fibre-matrix interface. A proposal of design recommendations is finally drafted taking advantage of the previously obtained results.

机译：就将这种材料用于结构目的而言，钢纤维混凝土（SFRC）的耐久性是至关重要的主题。 Magnetti Building在一个更广泛的研究项目框架内进行了广泛的实验研究，该研究项目的重点是在预制结构构件中使用SFRC。测试概述了基质孔隙率，纤维微结构和在纤维-基质界面发生的反应所起的关键作用。最后利用先前获得的结果起草了设计建议的提案。

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来源
《RILEM Proceedings PRO 39; RILEM Symposium on Fibre-Reinforced Concretes(FRC) - BEFIB 2004 vol.1; 20040920-22; Varenna(IT)》|2004年|P.565-574|共10页
会议地点 Varenna(IT)
作者
Liberato Ferrara; Romeo Fratesi; Sergio Signorini; Francesco Sonzogni;
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作者单位

Department of Structural Engineering, Politecnico of Milano, Italy;

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原文格式 PDF
正文语种 eng
中图分类钢筋混凝土结构;
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4. DURABILITY OF STEEL FIBRE-REINFORCED CONCRETE PRECAST ELEMENTS: EXPERIMENTS AND PROPOSAL OF DESIGN RECOMMENDATIONS [C] . Liberato Ferrara, Romeo Fratesi, Sergio Signorini, RILEM Symposium on Fibre-Reinforced Concretes . 2004

机译：钢纤维钢筋混凝土预制元素的耐久性：设计建议的实验和提案
5. Detailing for compression in reinforced concrete wall boundary elements: Experiments, simulations, and design recommendations. [D] . Welt, Travis Steven. 2015

机译：钢筋混凝土墙边界元素中的压缩详图：实验，模拟和设计建议。
6. Durability of Steel Fiber-Reinforced Concrete Containing SiO2 Nano-Particles [O] . Peng Zhang, Qingfu Li, Yuanzhao Chen, 2019

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7. Mechanical properties of various concrete after high temperature exposure Mechanical property of various types of concrete after high temperature exposure is investigated. Considering compressive strength requirement for a vertical element in high rise building, concrete specimens with various design strengths of 35, 80, 100, and 150 MPa were tested. Particularly, the influence of incorporated steel fiber on fire resistance is of interest in this study. Experimental results show that the fire resistance depends on the design strength and steel fiber content. Normal strength concrete (NSC) of a design strength of 35 MPa or high performance concrete (HPC) of 80-100 MPa does not spall when exposed to 100-400 °C of temperature. However, an explosive spalling occurs at 300 °C when the HPCs contain 1 vol. of steel fiber. Ultra-high performance concrete (UHPC) of a design strength of 150 MPa and 1.5 vol. of steel fiber also shows dramatic spalling at 300 °C. The experimental results found in this study can contribute to a better understanding of the behaviors of HPC and UHPC under fire and the role of steel fiber on the fire resistance. [O] . 2017

机译：研究了高温暴露后各种混凝土高温曝光机械性能各种混凝土的机械性能。考虑到高层建筑中垂直元件的抗压强度要求，测试了35,80,100和150MPa各种设计强度的混凝土试样。特别是，在这项研究中，掺入钢纤维对耐火性的影响。实验结果表明，耐火性取决于设计强度和钢纤维含量。在暴露于100-400°C的温度时，80-100MPa的设计强度为35MPa或高性能混凝土（HPC）的正常强度混凝土（NSC）不会击落。然而，当HPC含有1体积的钢纤维的百分比时，爆炸性剥落发生在300℃。超高性能混凝土（UHPC）的设计强度为150 MPa和1.5 Vol。钢纤维的百分比也显示出300℃的剧烈剥落。本研究中发现的实验结果可以有助于更好地了解在火灾中的HPC和UHPC的行为以及钢纤维对耐火性的作用。
8. Precast, Prestressed Concrete Bent Caps: Volume 2 Design Recommendations and Design Examples. [R] . Birely, A. C., Mander, J. B., Lee, J. D., 2018

机译：预制，预应力混凝土弯曲帽：第2卷设计建议和设计实例。

DURABILITY OF STEEL FIBRE-REINFORCED CONCRETE PRECAST ELEMENTS: EXPERIMENTS AND PROPOSAL OF DESIGN RECOMMENDATIONS

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