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

Abstract

Purpose

The 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/approach

It 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.

Findings

The 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/value

This 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.

Citation

Dong, H., Chen, X., Yang, G., He, D., Dai, Y. and He, P. (2024), "Rheological model of cement-based material slurry with different water-cement ratio and temperature", Multidiscipline Modeling in Materials and Structures, Vol. 20 No. 1, pp. 159-177. https://doi.org/10.1108/MMMS-05-2023-0181