Home / Standards / GB/T 31545-2025 GB/T 31545-2025 Upcoming Portland cement for nuclear power engineering 核电工程用硅酸盐水泥 Standard Type GBT ICS 91.100.10 CCS Q11 Status 即将实施 Issue Date 2025-10-31 Implementation 2026-11-01 Responsible Dept 中国建筑材料联合会 Drafting Unit N/A