High temperature properties of fiber reinforced polymers and fire insulation for fire resistance modeling of strengthened concrete structures

Kodur V. K. R.; Bhatt P. P.; Naser M. Z.

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High temperature properties of fiber reinforced polymers and fire insulation for fire resistance modeling of strengthened concrete structures

机译：纤维增强聚合物和防火隔热材料的高温特性，用于钢筋混凝土结构的耐火性建模

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Temperature dependent properties of materials are a crucial input for evaluating fire resistance of a structural member through calculation methods. While considerable amount of data is available on high temperature properties of concrete and reinforcing steel, only limited information is available on the temperature dependent properties of FRP and fire insulation. This paper reviews the currently available high temperature property test data and associated relations for FRP, and highlights the influence of different property relations on the fire resistance predictions of FRP-strengthened concrete structural members. Further, the influence of temperature dependent thermal properties of fire insulation on fire resistance prediction of FRP-strengthened member is also evaluated. Results from the analysis indicate that use of different property relations for FRP significantly alters the predicted fire response as well as the fire resistance of the strengthened concrete members. Results from the numerical studies further indicate that thermal properties of fire insulation have significant influence on fire resistance of FPR-strengthened RC members. Based on these numerical studies, recommendations are made for using appropriate property relations for FRP and fire insulation, in evaluating fire resistance of FRP-strengthened concrete members.

机译：材料的温度相关属性是通过计算方法评估结构构件耐火性的关键输入。尽管可以获得有关混凝土和钢筋高温性能的大量数据，但有关FRP和防火隔热的温度相关性能的信息却很少。本文回顾了目前可用的FRP高温性能测试数据及相关关系，并重点介绍了不同性能关系对FRP加固混凝土结构构件的耐火性预测的影响。此外，还评估了隔热材料的温度相关热性能对FRP加固构件的耐火性预测的影响。分析结果表明，对于FRP使用不同的性能关系会显着改变钢筋混凝土构件的预期火灾响应以及耐火性。数值研究结果进一步表明，防火保温材料的热性能对FPR加固的RC构件的耐火性具有重要影响。在这些数值研究的基础上，提出了在FRP增强混凝土构件的耐火性评估中使用适当的FRP和防火隔热性能关系的建议。

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《Composites》 |2019年第15期|107104.1-107104.14|共14页
作者
Kodur V. K. R.; Bhatt P. P.; Naser M. Z.;
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作者单位

Michigan State Univ Dept Civil & Environm Engn E Lansing MI 48824 USA;

Clemson Univ Glenn Dept Civil Engn Clemson SC USA;

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原文格式 PDF
正文语种 eng
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关键词
FRP; High temperature properties; Numerical modeling; Fire resistance;

机译：玻璃钢;高温性能;数值建模;防火性能;

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1. High temperature properties of fiber reinforced polymers and fire insulation for fire resistance modeling of strengthened concrete structures [J] . Kodur V. K. R., Bhatt P. P., Naser M. Z. Composites . 2019,第OCTa15期

机译：纤维增强聚合物和防火隔热材料的高温特性，用于钢筋混凝土结构的耐火性建模
2. Fiber-Reinforced Polymer-Strengthened/Reinforced Concrete Structures Exposed to Fire: A Review [J] . Chrysanthos Maraveas, Konstantinos Miamis, Apostolos A. Vrakas Structural engineering international . 2012,第4期

机译：着火的纤维增强聚合物增强/增强混凝土结构：综述
3. Effect of fire insulation on fire resistance of hybrid-fiber reinforced reactive powder concrete beams [J] . Hou Xiaomeng, Ren Pengfei, Rong Qin, Composite Structures . 2019,第FEBa期

机译：防火对混合纤维增强活性粉末混凝土梁耐火性的影响
4. Experimental Study on Safety Test for Reinforced Concrete Columns Strengthened with Carbon Fiber Reinforced Polymer after Fire [C] . ZHANG Yan, XU Zhisheng International Symposium on Safety Science and Technology; 20061024-27; Changsha(CN) . 2006

机译：碳纤维增强聚合物加固火灾后钢筋混凝土柱安全性试验研究
5. The effects of fire on insulated reinforced concrete members strengthened with fibre reinforced polymers. [D] . Hollingshead, Kevin. 2012

机译：火对纤维增强聚合物增强的隔热钢筋混凝土构件的影响。
6. Experimental Study of the Effect of High Service Temperature on the Flexural Performance of Near-Surface Mounted (NSM) Carbon Fiber-Reinforced Polymer (CFRP)-Strengthened Concrete Beams [O] . Younes Jahani, Marta Baena, Javier Gómez, 2021

机译：高服务温度对近表面（NSM）碳纤维增强聚合物（CFRP） - 复制混凝土梁弯曲性能影响的实验研究
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。

High temperature properties of fiber reinforced polymers and fire insulation for fire resistance modeling of strengthened concrete structures

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