Concrete welding using steel fibers

Samer A. Barakat; Salah Altoubat

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Concrete welding using steel fibers

机译：钢纤维混凝土焊接

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摘要

This experimental study investigates the viability of extending beam's length using steel fiber reinforced concrete (SFRC) as welding material. Results obtained from testing sixteen large scale welded beams and four control beams under third-point loading in a simply supported configuration are presented. Thirty-six (200 mm width × 220 mm depth × 1000 mm length) prismatic concrete elements were designed, fabricated and used to produce the 16 welded beams. The main testing parameters were the joint type, length and number within the beam in addition to the volume fraction of the steel fibers. Three different joint lengths (100, 200 and 300 mm) and two steel fiber volume fractions (2% and 3%) were examined. Load-deflection, failure and cracking behavior and the ultimate flexural capacity of the beams were monitored. The test results indicated that the welded beams with joint length of 300 mm using steel fibers at 2% provided comparable flexural behavior as the control beams. This demonstrates the viability of the proposed welding technique to extend the beam's length while maintaining the required flexural behavior.

机译：这项实验研究调查了使用钢纤维增强混凝土（SFRC）作为焊接材料延长梁长度的可行性。给出了在简单支撑的配置下，在第三点载荷下测试16条大型焊接梁和4条控制梁获得的结果。设计，制造并制造了36个（200毫米宽×220毫米深×1000毫米长）棱柱形混凝土构件，用于生产16条焊接梁。除钢纤维的体积分数外，主要测试参数是梁内的接缝类型，长度和数量。检查了三种不同的接头长度（100、200和300 mm）和两种钢纤维体积分数（2％和3％）。监测梁的荷载变形，破坏和开裂行为以及梁的极限抗弯能力。测试结果表明，使用2％的钢纤维焊接长度为300 mm的焊接梁可提供与控制梁相当的弯曲性能。这证明了所提出的焊接技术在保持所需弯曲性能的同时延长梁的长度的可行性。

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来源
《Engineering Structures》 |2010年第8期|P.2065-2073|共9页
作者
Samer A. Barakat; Salah Altoubat;
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作者单位

Civil and Environmental Engineering, University of Sharjah, Sharjah, United Arab Emirates;

rnCivil and Environmental Engineering, University of Sharjah, Sharjah, United Arab Emirates;

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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
concrete; welding; steel fibers; precast; beams;

机译：具体;焊接;钢纤维预制横梁;

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1. Ductility of concrete slabs reinforced with low-ductility welded wire fabric and steel fibers [J] . Rabin Tuladhar, Benjamin J. Lancini Structural Engineering and Mechanics . 2014,第4期

机译：低延性焊丝和钢纤维增强混凝土板的延性
2. Welded-wire reinforcement versus random steel fibers in precast, prestressed concrete bridge girders [J] . George Morcous, Maher K.Tadros, Marc Maguire PCI journal . 2011,第2期

机译：预制，预应力混凝土桥梁大梁中的电焊丝增强与无规钢纤维
3. Welded wire reinforcement versus random steel fibers in precast/prestressed ultra-high performance concrete I-girders [J] . Amin Kamal Akhnoukh, Haiyan Xie Construction and Building Materials . 2010,第11期

机译：预制/预应力超高性能混凝土工字梁中的电焊丝增强与无规钢纤维
4. Comparative Structural and Non-structural Properties of Ultra High-performance Steel-fiber-reinforced Concretes and High-Performance Steel-fiber-reinforced Concretes* [C] . Duy-Liem NGUYEN, Phu-Cuong NGUYEN, Van-Thuan NGUYEN, International Conference on Green Technology and Sustainable Development . 2018

机译：超高性能钢纤维增强混凝土与高性能钢纤维增强混凝土的结构和非结构性能比较
5. The effect of fiber corrosion on shear capacity of steel fiber reinforced concrete beams and an initial investigation on alkali-silica reaction in steel fiber reinforced concrete [D] . Waweru, Regina Nyambura 2011

机译：纤维腐蚀对钢纤维混凝土梁抗剪承载力的影响及对钢纤维混凝土碱硅反应的初步研究
6. Effect of Steel Fibers on the Hysteretic Performance of Concrete Beams with Steel Reinforcement—Tests and Analysis [O] . Violetta K. Kytinou, Constantin E. Chalioris, Chris G. Karayannis, 2020

机译：钢纤维对钢筋试验及分析混凝土梁滞回的影响及分析
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. Steel Fiber Reinforced Superplasticized Concretes for Rehabilitation of Bridge Decks and Highway Pavements [R] . Ramakrishnan, V. , Coyle, W. V. 1983

机译：钢纤维增强超塑性混凝土修复桥面和公路路面

Concrete welding using steel fibers

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