干旱区生态环境知识资源中心(Arid): Multi-scale study on mechanical property and strength prediction of aeolian sand concrete

Arid

DOI	10.1016/j.conbuildmat.2020.118538
	Multi-scale study on mechanical property and strength prediction of aeolian sand concrete
	Li, Yugen 1,2; Zhang, Huimei 1; Liu, Guangxiu 2; Hu, Dawei 2; Ma, Xiangrong 3
通讯作者	Zhang, Huimei
来源期刊	CONSTRUCTION AND BUILDING MATERIALS
ISSN	0950-0618
EISSN	1879-0526
出版年	2020
卷号	247
英文摘要	The aim of this work is to promote the utilization of aeolian sand for concrete production. The workability and mechanical property of aeolian sand concrete (ASC) is studied. The effect mechanisms of aeolian sand on the mechanical property of concrete are revealed from multiple scales. For the macro scale, use the pressure tester to test the compressive strength. For the mesoscopic, use the scanning electron microscope (SEM) to observe the structure of the interface transition zone (ITZ) and the nuclear magnetic resonance (NMR) to test the pore structure. Meanwhile, the distribution of chemical bonds is analyzed by the Fourier transform infrared (FT-IR) spectrometer and the microstructure of hydration products are characterized by the SEM for the microscopic. The results show that using parts of aeolian sand can improve the working and mechanical property of concrete. The physical influence mechanism is that it perfects the gradation of the aggregate and increases the density of concrete, reduces the effect of aggregate size and micro-region bleeding, improves the structure of ITZ and pores. For the chemical, it may accelerate the hydration reaction speed of cement and change the microstructure of hydration products. Finally, a strength prediction model of ASC is established based on the published and tested data, which agrees well with the tested result. (C) 2020 Elsevier Ltd. All rights reserved.
英文关键词	Aeolian sand concrete Mechanical properties Influence mechanism Multi-scale Strength prediction
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000528271000034
WOS关键词	DUNE SAND ; COMPRESSIVE STRENGTH ; CEMENT ; AGGREGATE ; PERFORMANCE ; HYDRATION ; MORTAR ; DESERT ; DAMAGE ; MODEL
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/2XILL650/319353
作者单位	1.Xian Univ Sci & Technol, Coll Architecture & Civil Engn, Xian 710054, Shaanxi, Peoples R China; 2.Yulin Univ, Sch Architecture Engn, Yulin 719000, Shaanxi, Peoples R China; 3.Yulin Univ, Sch Chem & Chem Engn, Yulin 719000, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Li, Yugen,Zhang, Huimei,Liu, Guangxiu,et al. Multi-scale study on mechanical property and strength prediction of aeolian sand concrete[J],2020,247.
APA	Li, Yugen,Zhang, Huimei,Liu, Guangxiu,Hu, Dawei,&Ma, Xiangrong.(2020).Multi-scale study on mechanical property and strength prediction of aeolian sand concrete.CONSTRUCTION AND BUILDING MATERIALS,247.
MLA	Li, Yugen,et al."Multi-scale study on mechanical property and strength prediction of aeolian sand concrete".CONSTRUCTION AND BUILDING MATERIALS 247(2020).