Modern methods for evaluating the workability of cement used as a binder for the stabilization and solidification of toxic wastes.

摘要

The workability of cement pastes has a great influence on the final properties of the solidified products, like mechanical strength, stability solidification of toxic and hazardous wastes. Hence considerable importance attaches to having reliable control over the fresh concrete properties, especially its early stiffening behaviour. This paper discussers measuring methods of the stiffening of two different types of cement pastes, prepared with different water / cement ratios, and examines the possible consequences of the early stiffening of cement pastes on their set times and bleeding.