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DOI	10.1016/j.conbuildmat.2019.07.287
	Optimization of the mix proportion for desert sand concrete based on a statistical model
	Yan, Wenlong; Wu, Gang; Dong, Zhiqiang
通讯作者	Wu, Gang
来源期刊	CONSTRUCTION AND BUILDING MATERIALS
ISSN	0950-0618
EISSN	1879-0526
出版年	2019
卷号	226 页码:469-482
英文摘要	To promote more construction applications of desert sand (DS), this study provides a method to design and optimize the mix proportion of desert sand concrete (DSC) based on a statistical model. The water to cement (W/C) ratio, sand to aggregate (S/A) ratio, DS to fine aggregate (D/F) ratio, and water reducer (WR) dosage are selected as the experimental factors. In addition, the slump, air content, and compressive strength at 7 days and 28 days of 36 DSC mixtures are investigated experimentally. The statistical models are established based on a central composite design to evaluate the effects of the experimental factors on the DSC properties, and the analysis of variance and the residual for the models indicate that all the models are valid and have predictive capacity. Additionally, the results presented in the response trace or surface plots indicate that an increase in the D/F ratio in the mixtures can decrease the slump and enhance the air content, but the augmentation of the AMC ratio can increase the slump and reduce the air content. An increase in both the DM ratio and W/C ratio cause a reduction in compressive strength. On the other hand, the effects of the S/A ratio and WR dosage on the DSC properties exhibit minor roles relative to the important effects of the W/C ratio and D/F ratio. In addition to the above, optimization criteria are proposed to select the appropriate mix design parameters of DSC for various construction demands. (C) 2019 Elsevier Ltd. All rights reserved.
英文关键词	Desert sand concrete (DSC) Mix proportion Statistical model Optimization criteria
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000493862600043
WOS关键词	SELF-COMPACTING CONCRETE ; DUNE SAND ; COMPRESSIVE STRENGTH ; THERMAL-CONDUCTIVITY ; WOOD SHAVINGS ; STUB COLUMNS ; LOCAL SAND ; DESIGN ; MORTAR ; PERFORMANCE
WOS类目	Construction & Building Technology ; Engineering, Civil ; Materials Science, Multidisciplinary
WOS研究方向	Construction & Building Technology ; Engineering ; Materials Science
EI主题词	2019-11-30
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/311023
作者单位	Southeast Univ, Minist Educ, Key Lab Concrete & Prestressed Concrete Struct, Nanjing 210096, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Yan, Wenlong,Wu, Gang,Dong, Zhiqiang. Optimization of the mix proportion for desert sand concrete based on a statistical model[J],2019,226:469-482.
APA	Yan, Wenlong,Wu, Gang,&Dong, Zhiqiang.(2019).Optimization of the mix proportion for desert sand concrete based on a statistical model.CONSTRUCTION AND BUILDING MATERIALS,226,469-482.
MLA	Yan, Wenlong,et al."Optimization of the mix proportion for desert sand concrete based on a statistical model".CONSTRUCTION AND BUILDING MATERIALS 226(2019):469-482.