Possibility of Soils and Waste for Carbon Dioxide Fixation to contribute to Low Carbon Society

研究了含钙钢渣的固CO2性能，并提出了其在建设良性循环社会和低碳社会中的岩土工程应用。为了考察固定CO2的性能，进行了通气恒流固定CO2试验。结果，当以0.05L/min的速度将CO2浓度4500 mg/L排放到试样中时，老化的炼钢炉渣被固定为0. 03 g-CO2/g-炉渣的CO2。此外，未老化的炼钢炉渣固定了0.04 g-CO2/g-炉渣的CO2。CO2的固定量为每种钢渣中约20%的水溶性钙。因此，示出了从钙的溶出量预测固定的CO2的量的方法。

The study presents the CO2 fixation properties of steel slag containing calcium, and proposes a geotechnical application for the formation of a sound material-cycle society and a low-carbon society. In order to investigate the properties of CO2 fixation, CO2 fixation test with vented constant flow was conducted. As a result, when the CO2 concentration 4500 mg/L was vented in a specimen by 0.05 L/min, the aging steelmaking slag were fixed CO2 of 0.03 g-CO2/g-slag. In addition, non-aging steelmaking slag fixed CO2 of 0.04 g-CO2/g-slag. Fixed amount of CO2 was about 20% water-soluble calcium with each of the steelmaking slag. Therefore, showing a method of predicting the amount of fixed CO2 from the elution amount of calcium.