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Sonebi, M., M. Lachemi, and K.M.A. Hossain, Optimisation of rheological parameters and mechanical properties of superplasticised cement grouts containing metakaolin and viscosity modifying admixture. Construction and Building Materials, 2013. 38: p. 126-138.

has been cited by the following article:

Article

Estimation of the Yield Stress of Cement Pastes from Electrical Resistivity Measurement

1School of Civil Engineering and Mechanics, Huazhong University of Science and Technology, 430074, Wuhan, China

2State Key Laboratory of Silicate, Wuhan University of Technology, 430070, Wuhan, China


American Journal of Civil Engineering and Architecture. 2016, Vol. 4 No. 4, 125-132
DOI: 10.12691/ajcea-4-4-3
Copyright © 2016 Science and Education Publishing

Cite this paper:
Mbujje Joel Webster, Wei XiaoSheng, Makorogo Javilla Barugahare. Estimation of the Yield Stress of Cement Pastes from Electrical Resistivity Measurement. American Journal of Civil Engineering and Architecture. 2016; 4(4):125-132. doi: 10.12691/ajcea-4-4-3.

Correspondence to: Mbujje  Joel Webster, School of Civil Engineering and Mechanics, Huazhong University of Science and Technology, 430074, Wuhan, China. Email: mbujje@gmail.com

Abstract

This study proposes a continuous method for predicting the yield stress development from mixing until the final setting point. Samples prepared with water to cement ratios (w/c) of 0.3, 0.35 and 0.4 are tested using a vane in cup rheometer, a Vicat needle and a non contact electrical resistivity machine (NC-ERM). Times corresponding to the initial yield stress (ta), a dramatic increase in the yield stress (tb), a maximum torque reading on the rheometer (tc), an initial setting (td) and a final setting (te) on the yield stress-time (τ(t)-t) curve are correlated with the time at a point of inflexion (tP) on the bulk resistivity-time (ρ(t)-t) curve. A quantitative relationship developed between the yield stress and electrical resistivity shows a good agreement with experimental data.

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