2018 Volume 72 Issue 1 Pages 412-417
Increasing minor additional constituents in OPC is one of the approaches for reducing the CO2 emissions of the cement industry. On the other hand, since there is concern that the quality of concrete may deteriorate due to the increase in the mixing ingredients, a substrate cement with a C3S amount of 1.5％ and a Blaine specific surface area of 200cm2/g was prepared compared to normal Portland cement, and the foundation properties of concrete were evaluated using cement prepared by increasing the fine limestone powder, blast furnace slag powder, and fly ash to 10％ by mass, respectively, as a minor mixing ingredient. As a result, by optimizing the composition of the base cement, it was confirmed that the slump, air quantity, and compressive strength of the concrete can be adjusted to the same level as that of 5％ by mass.
