干旱区生态环境知识资源中心(Arid): Effect of steel fibers on the performance of concrete made with recycled concrete aggregates and dune sand

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DOI	10.1016/j.conbuildmat.2019.04.087
	Effect of steel fibers on the performance of concrete made with recycled concrete aggregates and dune sand
	Kachouh, Nancy; El-Hassan, Hilal; EI-Maaddawy, Tamer
通讯作者	El-Hassan, Hilal
来源期刊	CONSTRUCTION AND BUILDING MATERIALS
ISSN	0950-0618
EISSN	1879-0526
出版年	2019
卷号	213 页码:348-359
英文摘要	This paper aims to develop and evaluate the performance of steel fiber-reinforced concrete made with recycled concrete aggregates (RCA) and desert dune sand. Different fresh and hardened properties of RCA concrete mixtures with and without steel fibers were evaluated and compared with those of a mixture made with natural coarse aggregates (NA). Test parameters included the RCA replacement percentage and steel fibers (SF) volume fraction (v(f)). Test results showed that the substitution of 30% of NA with RCA in plain concrete mixes did not reduce the design cylinder compressive strength (f'(c)), whereas the use of higher percentages of RCA replacement compromised the fresh and hardened properties of the concrete. The addition of SF significantly reduced the adverse effects caused by the inclusions of RCA in the mixes. RCA-based concrete mixtures having 70 and 100% RCA replacements could be produced with f'(c) values comparable to that of a NA-based concrete, when minimum v(f) of values of 1, and 2% were added, respectively. The RCA replacement increased the water absorption and sorptivity but decreased the ultrasonic pulse velocity, bulk resistivity, and abrasion resistance. The addition of SF improved the hardened properties of RCA-based concrete mixes to an extent of exceeding some of those of the NA based counterpart, as in the case of abrasion resistance. Analytical regression models were introduced to correlate different concrete properties to the 28-day cylinder compressive strength. (C) 2019 Elsevier Ltd. All rights reserved.
英文关键词	Steel fibers Dune sand Recycled concrete aggregate Fresh properties Hardened properties Analytical regression model
类型	Article
语种	英语
国家	U Arab Emirates
收录类别	SCI-E
WOS记录号	WOS:000471084500032
WOS关键词	STRESS-STRAIN BEHAVIOR ; MECHANICAL-PROPERTIES ; DEMOLITION WASTE ; STRENGTH ; RCA
WOS类目	Construction & Building Technology ; Engineering, Civil ; Materials Science, Multidisciplinary
WOS研究方向	Construction & Building Technology ; Engineering ; Materials Science
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/214980
作者单位	UAE Univ, Dept Civil & Environm Engn, POB 15551, Al Ain, U Arab Emirates
推荐引用方式 GB/T 7714	Kachouh, Nancy,El-Hassan, Hilal,EI-Maaddawy, Tamer. Effect of steel fibers on the performance of concrete made with recycled concrete aggregates and dune sand[J],2019,213:348-359.
APA	Kachouh, Nancy,El-Hassan, Hilal,&EI-Maaddawy, Tamer.(2019).Effect of steel fibers on the performance of concrete made with recycled concrete aggregates and dune sand.CONSTRUCTION AND BUILDING MATERIALS,213,348-359.
MLA	Kachouh, Nancy,et al."Effect of steel fibers on the performance of concrete made with recycled concrete aggregates and dune sand".CONSTRUCTION AND BUILDING MATERIALS 213(2019):348-359.