Structural kinetics constitutive models for characterizing the time-dependent rheologic behaviors of fresh cement paste

doi:10.1016/j.conbuildmat.2020.122175

CORC > 兰州理工大学 > 兰州理工大学

	Structural kinetics constitutive models for characterizing the time-dependent rheologic behaviors of fresh cement paste
	Wang, Dafu 1; Zhang, Yunsheng 1,2; Xiao, Jia 3; Huang, Tingjie 3; Wu, Meng 1; Zuo, Shenghao 3; Yang, Yonggan 4
刊名	CONSTRUCTION AND BUILDING MATERIALS
	2021
卷号	276
关键词	Structural kinetics Constitutive relation Structural build-up Time-dependent behavior Yield stress
ISSN号	0950-0618
DOI	10.1016/j.conbuildmat.2020.122175
英文摘要	The development of microstructure of cement-based materials should be mainly responsible for the time dependences of their rheological properties. In this paper, a series of structural kinetics constitutive models were established to predict the time-evolutions of the rheological properties of fresh cement paste under different working conditions. The models were developed from the Hershel-Bulkley model by combining a kinetic equation of the structural parameter 2 and the relationships between rheological parameters and the structural parameter. The effects of shear rate, thixotropy and cement hydration on the structural breakdown and structural build-up were considered in the kinetic equation. Meanwhile, the specific parameters of Portland cement paste in the kinetic equation were estimated according to the experimental data of published literatures. Moreover, the reliability of the new models was further validated by comparing the experimental results with the predicted value of dynamic and static yield stresses of cement pastes under mixing and rest. Thus, the relationship for Portland cement between the development of microstructure and the rheological properties had been established. (C) 2020 Elsevier Ltd. All rights reserved.
WOS研究方向	Construction & Building Technology ; Engineering ; Materials Science
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000634522000016
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/148305]
专题	兰州理工大学
作者单位	1.Southeast Univ, Sch Mat Sci & Engn, Nanjing 211189, Peoples R China; 2.Lanzhou Univ Technol, Sch Civil Engn, Lanzhou 730050, Peoples R China; 3.Cent South Univ, Sch Civil Engn, Changsha 410075, Peoples R China; 4.Hefei Univ Technol, Sch Civil Engn, Hefei 230009, Peoples R China
推荐引用方式 GB/T 7714	Wang, Dafu,Zhang, Yunsheng,Xiao, Jia,et al. Structural kinetics constitutive models for characterizing the time-dependent rheologic behaviors of fresh cement paste[J]. CONSTRUCTION AND BUILDING MATERIALS,2021,276.
APA	Wang, Dafu.,Zhang, Yunsheng.,Xiao, Jia.,Huang, Tingjie.,Wu, Meng.,...&Yang, Yonggan.(2021).Structural kinetics constitutive models for characterizing the time-dependent rheologic behaviors of fresh cement paste.CONSTRUCTION AND BUILDING MATERIALS,276.
MLA	Wang, Dafu,et al."Structural kinetics constitutive models for characterizing the time-dependent rheologic behaviors of fresh cement paste".CONSTRUCTION AND BUILDING MATERIALS 276(2021).