Abstract
Because of the increase in greenhouse gas emissions and the enforcement of environmental regulations, efforts to reduce CO2 emissions continue. In this study, calcined marl clay was used as a cement replacement material to minimize CO2 emissions by reducing the cement amount used. The raw materials for marl clay were analyzed, and the durability and chemical resistance of concrete produced with marl clay were examined. From the test results, the optimum replacement ratio of calcined marl clay was determined, and the performance difference with ordinary Portland cement (OPC) concrete was identified. The performance of the eco-concrete was comparable to that of the OPC concrete containing marl clay when the cement was optimally replaced with marl clay. Furthermore, the CO2 emission for each specimen was calculated. This study demonstrated the feasibility of developing eco-friendly concrete using calcined marl clay.
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