干旱区生态环境知识资源中心(Arid): Time-Varying Compressive Strength Model of Aeolian Sand Concrete considering the Harmful Pore Ratio Variation and Heterogeneous Nucleation Effect

Arid

DOI	10.1155/2019/5485630
	Time-Varying Compressive Strength Model of Aeolian Sand Concrete considering the Harmful Pore Ratio Variation and Heterogeneous Nucleation Effect
	Li, Yugen 1,2; Zhang, Huimei 1,3; Liu, Xiaoyu 3; Liu, Guangxiu 2; Hu, Dawei 2; Meng, Xiangzhen 1
通讯作者	Zhang, Huimei
来源期刊	ADVANCES IN CIVIL ENGINEERING
ISSN	1687-8086
EISSN	1687-8094
出版年	2019
卷号	2019
英文摘要	The aim of this study was to analyze the influence mechanism of aeolian sand on the mechanical property of concrete and establish the time-varying compressive strength model. Test studies on the development of concrete's compressive strength with aeolian sand from the Mu Us Desert were carried out. Influence mechanism of aeolian sand on the strength of concrete was revealed by using the nuclear magnetic resonance (NMR) to analyze the pore ratio and structures of aeolian sand concrete (ASC) and using the X-ray single crystal diffraction (XRD) to calculate the relative contents of hydration products semiquantitatively. Results show that the strength first increases and then decreases with the increase of aeolian sand content, where 20% was the best replacement ratio. With less than 20% content, it promoted the strength by changing the pore structure of concrete and accelerating the cement hydration speed based on its filling effect and chemical activity; when the content was more than 20%, it led to a decrease of strength because of an increase of harmful pore ratio and a weakening of the interface transition zone (ITZ), where the stress concentration and damage when loading are easier to occur. At last, a time-varying compressive strength model of ASC considering the harmful pore ratio variation and heterogeneous nucleation effect was established based on the discussion, published date, and American Concrete Institute (ACI) model, which agrees well with the experimental results and can easily predict the strength of concrete.
类型	Article
语种	英语
国家	Peoples R China
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000497356000003
WOS关键词	DUNE SAND ; MINERAL ADMIXTURES ; STUB COLUMNS ; DESERT SAND ; MORTAR ; PERFORMANCE ; EFFICIENCY ; AGGREGATE ; POROSITY
WOS类目	Construction & Building Technology ; Engineering, Civil
WOS研究方向	Construction & Building Technology ; Engineering
EI主题词	2019-10-30
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/310384
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.Xian Univ Sci & Technol, Coll Sci, Xian 710054, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Li, Yugen,Zhang, Huimei,Liu, Xiaoyu,et al. Time-Varying Compressive Strength Model of Aeolian Sand Concrete considering the Harmful Pore Ratio Variation and Heterogeneous Nucleation Effect[J],2019,2019.
APA	Li, Yugen,Zhang, Huimei,Liu, Xiaoyu,Liu, Guangxiu,Hu, Dawei,&Meng, Xiangzhen.(2019).Time-Varying Compressive Strength Model of Aeolian Sand Concrete considering the Harmful Pore Ratio Variation and Heterogeneous Nucleation Effect.ADVANCES IN CIVIL ENGINEERING,2019.
MLA	Li, Yugen,et al."Time-Varying Compressive Strength Model of Aeolian Sand Concrete considering the Harmful Pore Ratio Variation and Heterogeneous Nucleation Effect".ADVANCES IN CIVIL ENGINEERING 2019(2019).