The extension of thixotropy of cement paste under vibration: a shear-vibration equivalent theory
Source abstract
Abstract
Abstract The rheology of cement paste under vibration follows the transformation from Bingham model to Hershel-Bulkly model to Power-Law model. Most of the existing research is obtained through a large number of experiments in the data fitting process, and cannot express the time-varying characteristics of viscosity. Furthermore, thixotropy of cement paste is based on static experiment and cannot be applied under vibration. In this paper a shear-vibration equivalent theory is proposed, which consider the effect of vibration is the same as the shear effect on the viscosity change of cement paste. Combining vibrational shear equivalent theory and HI theory, the rheological changes of cement paste under vibration are obtained through numerical simulation. This theory has been verified by a series of experiments with numerical simulations, and can be used to study the rheology of concrete under vibration.
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Research context
OpenAlex topics: Rheology and Fluid Dynamics Studies · Innovations in Concrete and Construction Materials · Drilling and Well Engineering
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Affiliations
School of Mechanical Engineering, Tongji University , Shanghai China , 201804
References (18)
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