Abstract
The appearance of concrete walls or concrete structures changes with the distance between the viewpoint and the place where the concrete stands. The finding is that the concrete with smooth surface, such as casted in coated plywood, metal or pervious sheet forms scarcely makes people feels changes of appearance with distance, whereas concrete with modified texture does people various changes of appearance. This concept is to applicable to design and to select surface finishing of concrete. The seventeen concrete specimens of surface finishing were used for the test.
