This study provides a simple introduction to photo-catalyst technology to self-clean the organic dirts and degrade the air pollution in urban environment. Moreover, it shows the spray coating technique was applied to effective coating on the surface of concrete specimen by using as-developed integral photocatalyst solution. In order to examine photo-catalytic activity and degradation effectiveness on the surface of the concrete specimen, the UV-LED lamp was used as a light source to activate the photo-catalysis. Methyl-orange dye was used as an indicating method to speculate the photo-catalytic reaction and UV-VIS spectrometer to determine the molar content of the organic dye.

Abstract
 1. 서 론
 2. 실험방법
 3. 해석결과 및 고찰
 4. 결 론
 참고문헌

• 김혁중((주)삼현피에프 도로사업본부) | Kim Hyeok jung
• 황용경(㈜씨앤엘디) | Hwang Yong Kyung
• 이재준(전북대학교 토목공학과) | Lee Jae jun
• 권성준(한남대학교 건설시스템공학과) | Kwon Seung-Jun
• 김상훈((주)비앤디네트웍스) | Kim Sang Hoon