Mortar composition using oyster shell as fine aggregate and using a large amount of blast furnace slag fine powder

摘要

The present invention relates to a concrete composition in which a part of fine aggregate is replaced with a pulverized oyster shell and a large amount of fine blast furnace slag powder is included in the binder. The present invention is "in the plain mortar composition in which OPC, fine aggregate and water are mixed, 50 to 60 wt% of the OPC is substituted with fine blast furnace slag powder, and 10 to 40 vol% of the fine aggregate is substituted with crushed oyster shells, characterized in that Provided is a mortar composition using oyster shells as fine aggregate and using a large amount of fine blast furnace slag powder.