Abstract
Because the fishery industry yields scallop shells as waste products in great quantities, we wish to explore disposal methods of these shells to reuse them as a raw concrete material. We seek to use more finely crushed shells in concrete per unit volume, while minimizing impacts on concrete quality. We examined influences on the properties of concrete by the fineness modulus of the crushed shells. A reasonable range of fineness modulus was found that satisfied both the crushing efficiency of shells and concrete performance. Additionally, we compared the strength and durability of concrete that incorporated crushed shells at 400kg/m3 with concrete that did not contain shells. Results confirmed that the shell-containing concrete provided similar performance to that of regular concrete.
