Home / Standards / GB/T 40407-2021 GB/T 40407-2021 Active X-ray powder diffraction analysis method for determining the phases in portland cement clinker 硅酸盐水泥熟料矿相X射线衍射分析方法 Standard Type GBT ICS 91.100.10 CCS Q11 Status 现行 Issue Date 2021-08-20 Implementation 2022-03-01 Responsible Dept 中国建筑材料联合会 Drafting Unit N/A