Abstract
This paper presents the methods for measuring zero shear viscosity (ZSV) of binder-filler mastics. A viscometry test carried out on a dynamic shear rheometer was used to obtain the measurements. The Cross and Carreau models were then used to calculate the ZSV. The viscometry test used in this study is a less time-consuming and easier measurement technique for estimating ZSV. The Carreau model was found to produce a slightly lower ZSV compared to that obtained by the Cross model. Additionally, incorporating hydrated lime as a filler resulted in a higher ZSV compared to when using ordinary Portland cement (OPC), which is an indication of a stiffer binder-filler mastic. Higher filler contents result in higher viscosity. However, regardless of the filler content, subjecting the binder-filler mastics to aging conditions resulted in a more pronounced effect only in the case of the OPC binder-filler mastic when tested at 40°C.
