Plasticity And Bonding Of Refractory Bricks

After the substance is subjected to external force, it deforms without cracks. After the external force is released, the deformed form remains and does not return to the original state is called plasticity. Plasticity is an important molding process index for bonding clay. Plasticity is related to the ability of solid particles to absorb water, specific surface area and water volume. For example, after adding water to clay, a water film is adsorbed on the surface of a large number of clay particles, so that the particles are not only easy to slide under external force, but also have a certain binding force. , Which has high plasticity.

Plasticity measurement has plasticity index method and plasticity index method, and it can also be measured by plasticity moisture. The plasticity index refers to the variation range of water content when the clay is in a plastic state, and its value is equal to the difference between the liquid limit (liquid limit) and the plastic limit (plastic limit). The liquid limit is the upper limit of water content when the mud is in a plastic state. When the water content exceeds the liquid limit, the mud is in a semi-solid state. The difference between the liquid limit and the plastic limit, expressed as a percentage, is the plasticity index.