Home / Standards / GB/T 17431.1-2010 GB/T 17431.1-2010 Active Lightweight aggregates and its test methods - Part 1：Lightweight aggregates 轻集料及其试验方法 第1部分：轻集料 Standard Type GBT ICS 91.100.10 CCS Q25 Status 现行 Issue Date 2010-09-02 Implementation 2011-05-01 Responsible Dept 中国建筑材料联合会 Drafting Unit N/A