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

页码：159 / 177

页数：19

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