Effect of Increased Use of Blending Components in Cement on the Remaining Life of Controlled Type Landfills
By T. Shinmi, Y. Kirino, H. Kato and K. Kawai
Concrete Journal, Vol.60, No.10, Oct. 2022
- Synopsis
- The cement industry utilizes large amounts of waste material during clinker firing, contributing significantly to extension of the life of final disposal sites. On the other hand, in recent years, the use of blending components in cement has been increasing as part of efforts to achieve a carbon-free society, and there is concern that the resulting decrease in the amount of waste material received by the cement industry will negatively affect the remaining life of final disposal sites. Therefore, a study was conducted to better understand the effect of the cement industry on extending the remaining life of final disposal sites. As a result, it was found that the remaining life of final disposal sites is shortened by one to three years for every 10% increase in the production ratio of blended cement. It was also shown that even when the clinker composition is not changed, the impact of a 5% increase in the amount of trace additives is equivalent to a 10% increase in the production ratio of blended cement.
- Keywords:
- Portland cement, Blended cement, Trace additives, Controlled type landfill, Remaining life, Scenario analysis
