| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a protective sheet without having adverse influence on the human body and environment, by quickening impregnation time of a photo-curing resin to a base sheet and curing time of the photo-curing resin after sticking to a wall surface, as the protective sheet of the wall surface of a concrete structure of impregnating the photo-curing resin into the base sheet. <P>SOLUTION: This protective sheet 13 is formed by impregnating the photo-curing resin into the whole paper sheet 14 as the base sheet. This protective sheet 13 is stored in a state of being sealed in a light beam untransmissive bag in the shape of a roll; and is also fixed to the wall surface of the concrete structure, by curing the photo-curing resin by irradiating the natural visible light and near infrared radiation adjacent to this light in an irradiation part of the natural daylight after sticking to the wall surface of the concrete structure via a press by a sheet sticking roller at a job site, and curing the photo-curing resin by irradiating the visible light and the near infrared radiation by a fluorescent lamp and a metal halide lamp in an unirradiative part of the natural daylight such as a manhole. <P>COPYRIGHT: (C)2007,JPO&INPIT |
