1C36 融雪効果向上を目的とした貝殻粉末の光吸収特性の改善

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  • 1C36 Improvement of Optical Absorption Characteristics of Shell Powders for Snow Melting

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Snow removal is an important issue in snowy cold region. Although calcium chloride powders have usually applied in snow covered area especially on the road, many kind of artificial and natural structure are damaged by chloride. Scallop shell powders are expected to use in snow removal. However the whiteness of the shell powder reduces the ability of heat generation produced by optical absorption under sunshine. In this study, the heat treatment was applied to the scallop shell powders to change the blackness of them. An ice melting testing was introduced to evaluate the snow melting ability of the shell powders. The heat treatment improved the optical absorption characteristics of shell powders. The blackness of the powders became the best state at 680 ℃ heat treatment. The ice melting ability of the 680 ℃ heated scallop shell powders showed favorably compared with charcoal powders which were used to snow removal for farm land. The results provided the efficient use of scallop shell in snow removal technique.

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