STUDY ON SHEAR STRENGTH CHARACTERISTICS OF SCALLOP SHELL IS A FISHERY BY-PRODUCT AND APPLICATION TO THE GROUND IMPROVEMENT MATERIAL

A large number of scallop shell which is a by-product of fishery are stock piled around fishing ports such as Hokkaido because the method of disposal and utilization has not been established. In recent years, attempts have been made to effectively use crushed scallop shell particles (hereinafter referred to as crushed shell particles) as a construction material such as a mixture material in caisson filling materials, quay-wall back filling material in fishing ports. It has not been sloved the scallop shell are stock piled around fishing ports. This study elucidated the shear strength characteristics of the crushed shell particles considering particle size by laboratory experiment and clarified analytically the countermeasure effect considering the shear strength characteristics of the crushed shell particles appling to the ground improvement material. As a result, the crushed shell particles are a highly effective material as a ground improvement material. It is thought the utilization of crushed shells has a possible to contribute greatly to the promotion and construction of recycling society.