Process for the manufacture of a fire-resistant and/or fire-retardant cable

A process for the manufacture of a cable comprising at least one elongated electrically conductive element and at least one composite layer surrounding said elongated electrically conductive element, said process comprising the steps of:

• i) impregnating a non-woven fibrous material, preferably in the form of a tape or of a strip, with a liquid geopolymer composition, and
• ii) forming a gel encapsulating or supporting said non-woven fibrous material, said gel comprising a geopolymer material, and
• said process additionally comprising a stage a) of addition of a gelling composition to the liquid geopolymer composition, in order to form said gel during stage ii).