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DOI	10.1016/j.conbuildmat.2021.125638
	Research on influencing factors and time-varying model of thermal conductivity of concrete at early age
	Dai, Jinpeng; Wang, Qicai; Bi, Ruixiao; Wang, Chong; Han, Zhuowei; Du, Wentao; Chen, Ziyu
通讯作者	Wang, QC (通讯作者)，Lanzhou Jiaotong Univ, Natl & Prov Joint Engn Lab Rd & Bridge Disaster P, Lanzhou 730070, Peoples R China.
发表日期	2022
ISSN	0950-0618
EISSN	1879-0526
卷号	315
英文摘要	The thermal conductivity of concrete was investigated under the unsaturated condition during early curing. Based on the improved steady-state method, the thermal conductivity of unsaturated concrete at different ages under curing at the constant temperature of 20 degrees C, 5 degrees C, and -5 degrees C was tested. The influences of the water-binder ratio, initial air content, fly ash content, curing age, and curing temperature on the thermal conductivity of concrete were analyzed. The water-binder ratio, initial air content, fly ash content, curing age, and curing temperature are inversely proportional to the thermal conductivity of early age concrete. Through the analysis of the correlation between these factors and the thermal conductivity, the correlation between various factors and the thermal conductivity of concrete from large to small is as follows: curing temperature, initial air content, curing age, water-binder ratio, fly ash content. A multiple regression prediction time-varying model with acceptable accuracy is proposed to ensure the accuracy of the effective thermal conductivity prediction.
关键词	AUTOCLAVED AERATED CONCRETE MECHANICAL-PROPERTIES HOMOGENIZATION PERFORMANCE FOAM
英文关键词	Thermal conductivity; Steady-state method; Initial air content; Curing temperature; Time-varying model
语种	英语
WOS研究方向	Construction & Building Technology ; Engineering ; Materials Science
WOS类目	Construction & Building Technology ; Engineering, Civil ; Materials Science, Multidisciplinary
WOS记录号	WOS:000740112300003
来源期刊	CONSTRUCTION AND BUILDING MATERIALS
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/254933
作者单位	[Dai, Jinpeng; Wang, Qicai; Han, Zhuowei; Chen, Ziyu] Lanzhou Jiaotong Univ, Natl & Prov Joint Engn Lab Rd & Bridge Disaster P, Lanzhou 730070, Peoples R China; [Dai, Jinpeng; Wang, Qicai; Bi, Ruixiao; Du, Wentao] Lanzhou Jiaotong Univ, Civil Engn Dept, Lanzhou 730070, Peoples R China; [Wang, Chong] Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou 730070, Peoples R China
推荐引用方式 GB/T 7714	Dai, Jinpeng,Wang, Qicai,Bi, Ruixiao,et al. Research on influencing factors and time-varying model of thermal conductivity of concrete at early age[J]. 中国科学院西北生态环境资源研究院,2022,315.
APA	Dai, Jinpeng.,Wang, Qicai.,Bi, Ruixiao.,Wang, Chong.,Han, Zhuowei.,...&Chen, Ziyu.(2022).Research on influencing factors and time-varying model of thermal conductivity of concrete at early age.CONSTRUCTION AND BUILDING MATERIALS,315.
MLA	Dai, Jinpeng,et al."Research on influencing factors and time-varying model of thermal conductivity of concrete at early age".CONSTRUCTION AND BUILDING MATERIALS 315(2022).