Abstract
Color of concrete structure is different between at dry and wet surface conditions. For designing, it is very important to find how change peoples impressions by it. Ten architectural concrete specimens of nine hundred mm square with a variety of surface finishing were psychologically measured both at dry and wet surface conditions. Color and gloss were mechanically measured at these conditions. The results are as follows. The changes of psychological values due to wetting for smooth or hard concrete surface finishing, correlate closely with the change of color. Those for designed concrete finishing depend on the surface texture. Concrete with the glossy and light surface at dry condition, and concrete with glossy and warm surface at wet condition is felt comfortable.
