What is plastisier?

What is the cement to plaster ratio for a brick wall surfaces?

Hi there, I would use a 5-1 ratio of sand to cement and use a good mortar plastisier. Use plastering sand and mix well. Throughly soak the wall first and apply a light coat (scratch coat) Leave this to dry for a while and before it has completely dried, get the final coat on. Too much water on the wall will result poor bond between the Brick masonry and the plaster on account of lack of suction which is the primary mechanism by virtue of which the Cement Plaster will remain in position against the gravitational force.