コンクリート表面の落書きを除去するためのレーザ照射条件の検討 : レーザによるコンクリート表面の落書き除去方法に関する研究 (その1)

概要

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It is difficult to remove the painted graffiti from the concrete surface using a solvent, because the solvent dissolved the graffiti infiltrates into the concrete. This paper describes the laser irradiation condition to burn the graffiti without injuring the concrete surface. The used laser is Q-switch YAG laser and High-power laser diode, and the irradiation speed, diameter and power were changed. The concrete specimens were prepared water cement ratio of 30%, 40%, 50% and 60%, and the graffiti was written on the concrete surface by a spray paint colored of black, red and blue. As a results, the YAG laser with plus wave is useful for removal of the graffiti in small energy than High-power laser diode with continues wave.
社団法人日本建築学会の論文
2004-11-30