Home / Standards / GB/T 37990-2019 GB/T 37990-2019 Active Technical requirements of anti-washout admixture for underwater concrete 水下不分散混凝土絮凝剂技术要求 Standard Type GBT ICS 91.100.30 CCS Q12 Status 现行 Issue Date 2019-08-30 Implementation 2020-07-01 Responsible Dept 住房城乡建设部 Drafting Unit N/A