Strengthening of Modified Reactive Powder Concrete Columns with CFRP

IF 1 Q4 ENGINEERING, CIVIL

Jordan Journal of Civil Engineering Pub Date : 2016-01-01 DOI:10.14525/JJCE.10.1.3409

M. Medhlom, M. H. Mohammed

引用次数: 0

Abstract

An experimental investigation was conducted to investigate the behavior of modified reactive concrete (MRPC) columns before and after strengthening with carbon fiber reinforced polymer (CFRP) sheets jacketing under eccentric axial load. Twelve columns were tested up to failure, strengthened and retested to examine strengthening efficiency and to evaluate the effects of variation of the concrete type (normal or MRPC), presence of steel fibers and main steel reinforcement ratio. Experimental results showed that CFRP jacketing increases the ultimate failure load of strengthened columns up to 185%, highly stiffens them (reduces lateral displacements) and allow more ductile failure than the original columns. Also, inclusion of steel fibers in MRPC columns increases failure loads up to 83%, prevents spalling of the concrete cover and increase the ductility.

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改性活性粉末混凝土柱CFRP加固研究

通过试验研究了碳纤维增强聚合物(CFRP)护套加固改性活性混凝土(MRPC)柱前后在偏心轴向荷载作用下的性能。对12根柱进行了破坏、加固和复测，以检查加固效率，并评估混凝土类型(正常或MRPC)、钢纤维和主钢筋配筋率变化的影响。试验结果表明，CFRP护套使加固柱的极限破坏载荷增加了185%，增强了加固柱的刚度(减小了侧向位移)，使加固柱的延性破坏比原加固柱更大。此外，在MRPC柱中加入钢纤维可增加高达83%的破坏载荷，防止混凝土覆盖层剥落并增加延性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Jordan Journal of Civil Engineering ENGINEERING, CIVIL-

CiteScore

2.10

自引率

27.30%

发文量

期刊介绍： I am very pleased and honored to be appointed as an Editor-in-Chief of the Jordan Journal of Civil Engineering which enjoys an excellent reputation, both locally and internationally. Since development is the essence of life, I hope to continue developing this distinguished Journal, building on the effort of all the Editors-in-Chief and Editorial Board Members as well as Advisory Boards of the Journal since its establishment about a decade ago. I will do my best to focus on publishing high quality diverse articles and move forward in the indexing issue of the Journal.