COMPRESSIVE BEHAVIOUR OF HIGH PERFORMANCE CONCRETE AT DYNAMIC STRAIN-RATES

机译：动态应变率下高性能混凝土的抗压性能

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The behaviour of high performance steel-fiber reinforced concrete under dynamic compression has been experimentally investigated. Two concrete grades (C100/120, C200/240), based on cementitious mixes containing quarts sand and bauxite, respectively, have been examined using 40mm and 60mm cubic specimens. Three testing conditions have been implemented, i.e., static, intermediate strain-rate and higher strain-rate, where for the latter Hopkinson bar techniques have been employed. The entire stress-strain curves have been obtained. The results concerning strength and ductility show that these concrete types exhibit a distinct sensitivity to the applied strain-rate, which, however, is moderate compared to the corresponding behaviour of normal concrete.

机译：实验研究了高性能钢纤维增强混凝土在动态压缩下的性能。分别使用40毫米和60毫米立方试样检查了两种混凝土等级（C100 / 120，C200 / 240），分别基于含夸脱砂和铝土矿的水泥混合料。已经实现了三个测试条件，即静态，中间应变率和较高应变率，其中对于后者使用了霍普金森棒技术。已获得整个应力-应变曲线。有关强度和延展性的结果表明，这些类型的混凝土对所施加的应变率具有明显的敏感性，但是，与普通混凝土的相应行为相比，它是中等的。

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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.421-430|共10页
会议地点 Varenna(IT)
作者
George Solomos; Mario Berra;
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作者单位

European Commission, Joint Research Centre, Ispra, 21020 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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专利

1. Compressive Behaviour of Plain Concrete at Higher Strain-Rates [J] . George Solomos, Mario Berra Journal of the Mechanical Behavior of Materials . 2005,第1a2期

机译：普通混凝土在较高应变率下的抗压性能
2. Compressive behaviour of concrete-filled carbon fiber-reinforced polymer steel composite tube columns made of high performance concrete [J] . Ostrowski Krzysztof, Dudek Mateusz, Sadowski Lukasz Composite Structures . 2020,第Feba期

机译：高性能混凝土填充碳纤维增强聚合物钢复合管柱的抗压性能
3. Compressive behaviour of stub concrete column strengthened with ultra-high performance concrete jacket [J] . Xie Jian, Fu Quanhong, Yan Jia-Bao Construction and Building Materials . 2019,第APRa20期

机译：超高性能混凝土护套增强短桩混凝土柱的抗压性能
4. COMPRESSIVE BEHAVIOUR OF HIGH PERFORMANCE CONCRETE AT DYNAMIC STRAIN-RATES [C] . George Solomos, Mario Berra, International Union of Testing amp, RILEM Symposium on Fibre-Reinforced Concretes . 2004

机译：动态应变率高性能混凝土的压缩行为
5. Development of high performance concrete composites using Class F fly ash and PCC bottom ash, and a statistical model to predict compressive strength of similar concrete composites. [D] . Puri, Rajnish. 2015

机译：使用F级粉煤灰和PCC底灰开发高性能混凝土复合材料，并建立一个统计模型来预测类似混凝土复合材料的抗压强度。
6. Effects of Polypropylene Fibre and Strain Rate on Dynamic Compressive Behaviour of Concrete [O] . Meng Chen, Chenhui Ren, Yangbo Liu, 2019

机译：聚丙烯纤维和应变率对混凝土动态压缩性能的影响。
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. Effect of Fiber Orientation on Dynamic Compressive Properties of an Ultra-High Performance Concrete. [R] . Groeneveld, A. B., Ahlborn, T. M., Crane, C. K., 2017

机译：纤维取向对超高性能混凝土动态压缩性能的影响。

COMPRESSIVE BEHAVIOUR OF HIGH PERFORMANCE CONCRETE AT DYNAMIC STRAIN-RATES

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