Question

The most common ground or primer used to prepare a support for painting is called ______________, which consists of glue and plaster of Paris or chalk.

Answer 1

Answer:

The most common ground or primer used to prepare a support for painting is called Gesso which consists of glue and plaster of Paris or chalk.

Explanation:

• Four types of preparations are distinguished according to the binder: Glue-chalk (traditional gesso), half-fat or half-oil or emulsion (binder is an emulsion - a mixture of hydrophilic and hydrophobic binder), oil (binder is oil) and dispersive (binder is a dispersion of acrylic resin in water)
• The preparation consists of binders, fillers and bleach, which give it the required density, whiteness, ability to absorb and bind color. The fillers could be: chalk (champagne chalk, mountain chalk), gypsum (Bologna chalk), kaolin. The bleaches could be: titanium white, zinc white, lithopone, lead white. The binder gives specific properties to the preparation, adapts it to the technique and the image carrier (For Gesso it is a natural glue).