Surface treatment of concrete
AssigneeNuclear Decommissioning Authority
InventorsStephen Brown, Julian Spencer, Andrew Benjamin, Tristan Thomas
Life of this patent
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Abstract
A method of treating a surface for the removal of a surface portion comprising irradiating the surface with laser light, wherein the irradiation is effected by covering said surface in a sequential manner with a plurality of discrete spots of laser light. The spots of laser light overlap and may be arranged in a geometric arrangement defined by the locations of the centers of the spots of laser light. The spots of laser light may be applied sequentially.
Claims11
1-21. (canceled)
A method of treating an inorganic non-metallic surface for the removal of a portion of a surface portion by scabbling, the method comprising the repeated sequence of steps of
- irradiating a first discrete location on the surface with a stationary spot of laser light having an average power density of from 30 W/cm2 to 200 W/cm2 for a period of from 1 s to 30 s;
- and then
- (a) moving the spot of laser light relative to the surface;
- or
- (b) moving the surface relative to the spot of laser light,
- so as to irradiate a second discrete location on the surface in the same manner.
Dependencies are inferred from the claim text.