2. Bitumen

Area of use

Bitumen-based waterproofing is generally produced by bonding hot bitumen (known as hot applied coating or HAC) to factory-prefabricated sheets comprising a reinforcement (cardboard, felt or glass cloth) coated with a bituminous mass. This is not simply a poured waterproofing compound, as in the case of asphalt used in public works. However, as we shall see, this is an old technique that is now outdated.

2.1 Bitumen characteristics

Penetrability/hardness

Penetrability, expressed in tenths of a millimeter, represents the penetration into a bitumen sample, after a time of 5 seconds, of a typical needle whose mass with its support and, possibly,...

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Bitumen

Roches, poudres et fines d'asphalte naturel - NF B 13-001 - Décembre 1977
Mastic asphalt for waterproofing – Definitions, specifications and test methods - NF EN 12970 - Décembre 2000
Bitumes et liants bitumineux. Détermination de la pénétrabilité à l'aiguille - NF EN 1426 - Décembre 1999
Bitumen and bituminous binders and binders – Determining the softening temperature – Ball-and-ring method - NF EN 1427...