| To propose evaluation methods for lightness value of revetment blocks and assess sensory impression of the blocks, we examined variation in lightness value and relationships between the impression and physical structure for those. We used eight types of model blocks, which are often used currently and have different textures, and measured annual change in the lightness value. In addition, we conducted questionnaire survey to acquire impression scores based on degree of coarseness for the texture of each block and quantified the physical structure of the texture. The impression scores were roughly related to the physical structures of the surface. Roughness tended to correspond to sensory impression, and revetment blocks with smooth and light aspect were less impressed. These results suggest that physical measurements could be used as an index for scenery evaluation since human impression for the texture of revetment blocks was explained by surface structure. |
