干旱区生态环境知识资源中心(Arid): Cost-performance balance and new image analysis technique for ultra-high performance hybrid nano-based fiber-reinforced concrete

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DOI	10.1016/j.conbuildmat.2021.125753
	Cost-performance balance and new image analysis technique for ultra-high performance hybrid nano-based fiber-reinforced concrete
	Khan, Mohammad Iqbal; Fares, Galal; Abbas, Yassir M.
通讯作者	Khan, MI (corresponding author)，King Saud Univ, Dept Civil Engn, Riyadh 80011421, Saudi Arabia.
来源期刊	CONSTRUCTION AND BUILDING MATERIALS
ISSN	0950-0618
EISSN	1879-0526
出版年	2022
卷号	315
英文摘要	The formulation of ultra-high performance (UHPC) concrete is characterized by the presence of fine inert and reactive filling materials to cement with proper superplasticizer and low water-to-cement ratio. In this study, the use of crystalline nanocellulose (CNC) and carbon nanotube (CNT) to reinforce the flexural resistance of the cementitious matrix at the nano level is investigated. CNC and CNT were utilized in the presence of hybridized polyvinyl alcohol (PVA) microfibers with either macrosteel or microsteel fibers of different physicomechanical properties. Additionally, fine aggregates of a maximum particle size of 4 mm and two types of desert sands were incorporated and evaluated in the presence of fly ash (FA) and silica fume (SF). The use of FA has led to an improvement in workability with elevated compactness integrated with SF nanoparticles. The optimal combination of aggregates with maximum packing density was selected in the mix composition. The effect of CNC and CNT on the temperature evolution profiles and superplasticizer dosage on the setting time was individually evaluated. The results have confirmed that there had been a limited zone of accepted workability with CNC, after which a substantial workability loss was noticed. Macrosteel fibers have limited content, after which a remarkable reduction in compressive strength becomes evident in contrast to the microsteel fibers that can be incorporated in much higher contents. The image analysis technique was used to support the interpretation of data. It is concluded that the utilization of fine aggregates of a maximum particle size of 4 mm has limited the properties of UHPC mixes.
英文关键词	Ultrahigh-performance concrete Cost-performance-balance Optimization Nano -based cementitious materials Fiber 's dispersion Image analysis
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000736957800002
WOS关键词	ORIENTATION DISTRIBUTION ; STEEL FIBERS ; COMPOSITES ; DENSITY ; PACKING ; FLOW
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/2XILL650/376942
作者单位	[Khan, Mohammad Iqbal; Fares, Galal; Abbas, Yassir M.] King Saud Univ, Dept Civil Engn, Riyadh 80011421, Saudi Arabia
推荐引用方式 GB/T 7714	Khan, Mohammad Iqbal,Fares, Galal,Abbas, Yassir M.. Cost-performance balance and new image analysis technique for ultra-high performance hybrid nano-based fiber-reinforced concrete[J],2022,315.
APA	Khan, Mohammad Iqbal,Fares, Galal,&Abbas, Yassir M..(2022).Cost-performance balance and new image analysis technique for ultra-high performance hybrid nano-based fiber-reinforced concrete.CONSTRUCTION AND BUILDING MATERIALS,315.
MLA	Khan, Mohammad Iqbal,et al."Cost-performance balance and new image analysis technique for ultra-high performance hybrid nano-based fiber-reinforced concrete".CONSTRUCTION AND BUILDING MATERIALS 315(2022).