Rheological model of cement-based material slurry with different water-cement ratio and temperature

被引：2
作者：
Dong, Hongjing [1 ]
Chen, Xi [1 ]
Yang, Guangying [1 ]
He, Dandan [1 ]
Dai, Ying [2 ]
He, Pengfei [2 ]
机构：
[1] Jiaxing Univ, Jiaxing, Peoples R China
[2] Tongji Univ, Shanghai, Peoples R China
来源：
MULTIDISCIPLINE MODELING IN MATERIALS AND STRUCTURES | 2024年 / 20卷 / 01期
关键词：
Cement-based material; Rheological; Water-cement ratio; Temperature; Constitutive relation; THIXOTROPIC BEHAVIOR; FLY-ASH; HYDRATION; PASTE; VISCOSITY; PRESSURE; FLOW;
D O I：
10.1108/MMMS-05-2023-0181
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
PurposeThe purpose of this paper is to obtain a constitutive model of cement-based material in the rheological stage, which owns the different water-cement ratio (w/c) and temperature and have a significant impact on the workability of concrete materials.Design/methodology/approachIt is introduced a modified Arrhenius equation into the Herschel-Bulkley model, which is widely applied in rheological analysis and constructed an ordinary differential equation (ODE) of w/c from the Navier-Stokes equation. By solving the ODE, an approximate constitutive relation of cement-based materials included w/c and temperature is derived. Compared with the experimental results, the present model is validated.FindingsThe shear stress and shear rate curves with different w/c and temperature are simulated by the present method, and the present model can be applied to analyze the changes of apparent viscosity in cement-based material slurry as the w/c and temperature varying.Originality/valueThis work gives a mathematical model, which can effectively approximate the shear stress-shear rate relation with different w/c and temperature in the rheological stage of cement-based material.
引用
收藏
页码：159 / 177
页数：19
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