Standard No.:	GB/T 27690-2011
English Name:	Silica fume for cement mortar and concrete
Chinese Name:	砂浆和混凝土用硅灰
Chinese Classification:	Q12    Cement composite material and additives
Professional Classification:	GB    National Standard
ICS Classification:	91.100.10 91.100.10    Cement. Gypsum. Lime. Mortar 91.100.10
Source Content Issued by:	AQSIQ; SAC
Issued on:	2011-11-21
Implemented on:	2012-8-1
Status:	superseded
Superseded by:	GB/T 27690-2023 Silica fume for cement mortar and concrete
Superseded on:	2023-10-1
Target Language:	English
File Format:	PDF
Word Count:	5000 words
Translation Price(USD):	80.0
Delivery:	via email in 1 business day

1 Scope This standard specifies the terms and definitions, classification and labeling, requirements, test methods, inspection rules, packaging, marking, transportation and storage for silica fume for cement mortar and concrete. This standard is applicable to silica fume for cement mortar and concrete. 2 Normative References The following referenced documents are indispensable for the application of this document. For dated references, only the dated edition is applicable to this standard; for undated references, the latest edition (including all the amendments) applies. GB/T 176 Methods for Chemical Analysis of Cement GB/T 2419 Test Method for Fluidity of Cement Mortar GB 6566 Limit of Radionuclides in Building Materials GB 8076-2008 Concrete Admixtures GB/T 12573 Sampling Method for Cement GB/T 19587 Determination of the Specific Surface Area of Solids by Gas Adsorption Using the BET Method GB/T 17671-1999 Method of Testing Cements - Determination of Strength GB/T 18736-2002 Mineral Admixtures for High Strength and High Performance Concrete GB/T 50082-2009 Standard for Test Methods of Long-term Performance and Durability of Ordinary Concrete JC/T 420 Chemical Analysis Method of Chlorine in Cement Raw Material JC/T 681 Mixer for Mixing Mortars 3 Terms and Definitions For the purposes of this document, the following terms and definitions apply. 3.1 Silica fume

Foreword I 1 Scope 2 Normative References 3 Terminologies and Definitions 4 Classification and Labeling 5 Requirements 6 Test Method 7 Inspection Rules 8 Packaging, Marking, Transportation and Storage Appendix A (Normative) Test Method for Solid Content in Silica Fume Slurry Appendix B (Normative) Test Method for Activity Index Appendix C (Normative) Test Method for Resistance to Alkali Aggregate Reaction