VACUUMABLE GEL FOR DECONTAMINATING SURFACES AND USE THEREOF

摘要

The invention relates to a vacuumable gel for decontaminating surfaces and to the use of said gel, whereby the decontamination can, for example, take the form of radioactive decontamination. The inventive gel comprises a colloidal solution and contains: between 5 and 25 wt.- % of an inorganic viscosifier in relation to the total weight of the gel; between 0.01 and 0.2 wt.- % of a surfactant in relation to the total weight of the gel and preferably less than 0.1 wt.- % of a surfactant in relation to the total weight of the gel; between 0.5 and 7 mol, per litre of gel, of an acid or an inorganic base; and, optionally, between 0.05 and 1 mol, per litre of gel, of an oxidising agent having a normal oxidation-reduction power E₀ of greater than 1.4 V in a strong acid medium or of the reduced form of said oxidising agent, the remainder being water. The invention can be sprayed onto a surface that is to be decontaminated and removed in the form of dry residues by means of vacuuming or brushing after drying.