Home / Standards / GB/T 28629-2012 GB/T 28629-2012 Abolished Methods for chemical analysis of free silicon dioxide in cement clinker 水泥熟料中游离二氧化硅化学分析方法 Standard Type GBT ICS 91.100.10 CCS Q11 Status 废止 Issue Date 2022-12-28 Implementation 2013-02-01 Responsible Dept N/A Drafting Unit N/A