Evolution of Cement-Related JIS and Overview of the 2026 Revision
By S. Nogami, T. Ito and M. Tanimura
Concrete Journal, Vol.64, No.11, Nov. 2026
- Synopsis
- After outlining the evolution of cement-related Japanese Industrial Standards (JIS), this paper provides an overview of the revision raising the upper limit for minor additional constituents in ordinary Portland cement as a measure contributing to the reduction of the clinker-to-cement ratio, which is one of the strategies adopted by the cement industry to achieve carbon neutrality. It also presents the results of evaluations of equivalence with conventional cement based on data from various tests on concrete made with trial-produced cements conforming to the revised JIS, as well as the current status of measures taken with respect to certification and accreditation schemes to support the widespread adoption of cement conforming to the revised JIS.
- Keywords:
- Cement, JIS, Minor additional constituents, Clinker-to-cement ratio, Carbon neutrality
