5. Glossary

Additives: products added to the basic waterproofing material (polymer or bitumen) to form the waterproofing compound.

Assembly: all processes used to join panels (i.e., strips and/or sheets) to form a waterproof seal.

Calendering: a method of producing geomembranes that involves passing a molten waterproof compound between parallel rotating cylinders.

Calender: machine comprising cylinders used for the production of geomembranes by calendering.

Blistering: localized swelling of the top layer of a multilayer geomembrane caused by the expansion of gas trapped between two layers of the geomembrane, particularly gas resulting from the vaporization...