THE MATERIAL CHARACTERISTICS AND COST/CO₂ PERFORMANCE IN APPLICATION OF A SHELL-AGGREGATED CONCRETE BLOCK AS ALGAL REEF

Abstract

 On the newly developed concrete block mixed with waste scallop shells as aggregates (SC-block), material characteristic tests, field demonstrations, field research of seaweed growth were carried out. In an estimation in the case of seaweed bed formation by 2,000 blocks, cost increased by 4 % but CO₂ was hardly discharged when SC-blocks were used instead of normal concrete blocks.