On the “Thixotropic” Behavior of Fresh Cement Pastes

Thixotropic behavior describes a time-dependent rheological characterized by reversible changes. Fresh cementitious materials often require thixotropic to ensure sufficient workability and proper casting without vibration. Non-thixotropic induces loss. Cementitious cannot be considered as an ideal material due cement hydration, which leads irreversible However, in some cases, paste may demonstrate during the dormant period of hydration. The aim this work is propose approach able quantify contribution hydration examine conditions under display behavior. proposed consists succession stress growth procedures that allow static yield measured. For inert material, such calcite suspension, structural build-up flocculation induced attractive Van der Waals forces. This reversible. paste, there significant increase addition superplasticizer allows maintained first hours its retarding effect. dosage decrease magnitude forces, can erase