2. Pathology of interior plasterwork

2.1 General

This pathology is linked to the characteristics of the plaster material and, consequently, of the plaster-based components used in these structures.

• Gypsum is a brittle material: its modulus of deformation is high, but its tensile strength is not; as a result, its elongation at break is low. Pure plaster elements, such as smooth-faced plaster tiles, are therefore very sensitive to movements of the structure in which they are inserted. Unless special precautions are taken at junctions, cracking is difficult to avoid and alters the performance of the corresponding walls, not only in terms of appearance, but also in terms of airtightness, acoustic insulation and fire resistance.

  In the case of gypsum...