Abstract
By using a spectrum photometer, spectrum reflectivity of building materials (metal and so on) which depends to be different in surface was found to have an intentional polish in near infrared area (210〜2,500nm) and infrared area (2.5〜25.0μm). This study is further examined the characteristics of surface roughness. Spectrum reflectivity was again measured with different coats (the reflectable paint, the general paint, etc.), which was in different surface of the building material. A comparison of the characteristics of the surface of separation of the change of the coat with the material was carried out. The results were shown that the spectrum reflectivity was mainly influenced by the different surface nature of the material. The influence of the paint on the surface of materials should be big on the spectrum reflectivity, and the characteristic with different surface of the building materials thus was clear.
