Bitumen has long been used as a waterproofing material and as a protective coating for all types of surfaces exposed to the weather. It has been stated that the deliberate use of bitumen for preservation purposes dates back to about 3,800 B.C., so there is nothing novel in the use of this raw material. Bitumen is such a versatile commodity that new applications and modifications are constantly being developed and utilised in the protection of structures of all types.
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