EVALUATION OF DIFFERENT FIBRE ADDITIONS IN CONCRETE AND THEIR EFFECT ON MECHANICAL PROPERTIES AND CORROSION OF STEEL IN CONCRETE EXPOSED TO CHLORIDE IONS

机译：混凝土中不同纤维添加量的评估及其对氯离子中混凝土中钢的力学性能和腐蚀的影响

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In this work, Polypropylene and glass fibres as an additive material were used in concrete. Fibres with different volume percent were added into concrete. These concretes were exposed to 3.5% salt solutions. Corrosion behavior of steel in these concrete was determined using the electrochemical methods. Compressive and tensile strength of these concretes were also measured. Addition of Fibre showed an increase of 49% in tensile strength of concrete compared to the control concrete. In addition, use of fibre in concrete increased the resistance of steel against pitting corrosion and uniform corrosion. The compressive strength of polypropylene fibre increased with age, while the compressive strength of glass fibre decreased with age. Resistance of steel against pitting and uniform corrosion in the concrete containing glass fibre was better than that in the concrete with polypropylene.

机译：在这项工作中，聚丙烯和玻璃纤维作为添加剂被用于混凝土中。将具有不同体积百分比的纤维添加到混凝土中。这些混凝土暴露于3.5％的盐溶液中。使用电化学方法确定钢在这些混凝土中的腐蚀行为。还测量了这些混凝土的抗压强度和抗拉强度。与对照混凝土相比，添加纤维显示出混凝土的抗张强度提高了49％。另外，在混凝土中使用纤维增加了钢的抗点蚀和均匀腐蚀的能力。聚丙烯纤维的抗压强度随着年龄的增长而增加，而玻璃纤维的抗压强度随着年龄的增长而降低。在含玻璃纤维的混凝土中，钢的抗点蚀和均匀腐蚀的性能要比含聚丙烯的混凝土好。

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来源
《International Seminar on Composite Materials in Concrete Construction; Sep 5-6, 2002; Scotland, UK》|2002年|p.303-312|共10页
会议地点 Scotland(GB)
作者
Ch Dehghanian; A R Baratifard;
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作者单位

University of Technology in Isfahan Iran;

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会议组织
原文格式 PDF
正文语种 eng
中图分类普通生物学;
关键词
fibre; concrete; corrosion; steel; polypropylene; glass; compressive strength; and cvclic nolarization;

机译：纤维;混凝土;腐蚀;钢;聚丙烯;玻璃;抗压强度;共面法化;
入库时间 2022-08-26 14:29:36

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机译：通过双冲孔试验评估暴露于高温的钢纤维增强混凝土的机械性能
2. Influence of steel fibres addition on mechanical and selected rheological properties of steel fibre high-strength reinforced concrete [J] . Bywalski C., Kaminski M., Maszczak M., Archives of Civil and Mechanical Engineering . 2015,第3期

机译：钢纤维的添加对钢纤维高强度钢筋混凝土力学性能和流变性能的影响
3. Pull-out behaviour of hooked-end steel fibres in cracked concrete exposed to wet-dry cycles of chlorides and carbon dioxide - Mechanical performance [J] . Construction and Building Materials . 2020,第Apra20期

机译：暴露在氯化物和二氧化碳的干湿循环中的开裂混凝土中的钩端钢纤维的拉拔性能-机械性能
4. EVALUATION OF DIFFERENT FIBRE ADDITIONS IN CONCRETE AND THEIR EFFECT ON MECHANICAL PROPERTIES AND CORROSION OF STEEL IN CONCRETE EXPOSED TO CHLORIDE IONS [C] . Ch Dehghanian, A R Baratifard International seminar on composite materials in concrete construction . 2002

机译：混凝土中不同纤维添加的评价及其对氯离子混凝土中钢的力学性能和腐蚀的影响
5. Effects of cement alkalinity, exposure conditions and steel-concrete interface on the time-to-corrosion and chloride threshold for reinforcing steel in concrete. [D] . Nam, Jingak. 2004

机译：水泥碱度，暴露条件和钢混凝土界面对混凝土中钢筋腐蚀时间和氯化物阈值的影响。
6. A Two-Year Evaluation of Corrosion-Induced Damage to Hot Galvanized Reinforcing Steel B500SP in Chloride Contaminated Concrete [O] . Mariusz Jaśniok, Maria Sozańska, Jacek Kołodziej, 2020

机译：对氯化物污染混凝土中热镀锌钢B500SP的腐蚀造成损伤的两年评估
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。

EVALUATION OF DIFFERENT FIBRE ADDITIONS IN CONCRETE AND THEIR EFFECT ON MECHANICAL PROPERTIES AND CORROSION OF STEEL IN CONCRETE EXPOSED TO CHLORIDE IONS

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