G/TBT/N/RWA/336  
17 April 2020  
(20-3054) Page: 1/2 
Committee on Technical Barriers to Trade  Original:  English  
 
  NOTIFICATION  
The following notification is being circulated in accordance with Article 10.6  
 
1. Notifying Member:  RWANDA   
If applicable, name of local government involved (Article 3.2 and 7.2):  Rwanda 
Standards Board (RSB)  
2. Agency responsible:  Rwanda Standards Board (RSB)  
Name and address (including telephone and fax numbers , email and website 
addresses, if available) of agency or authority designated to handle comments 
regarding the notification shall be indicated if different from  above:   
Rwanda Standards Board  
KK 15 Rd, 49  
P.O.BOX 7099, Kigali, Rwanda  
Tel: +250 788303492  
Email: info@rsb.gov.rw   
Website: www.rsb.gov.rw  
3. Notified under Article 2.9.2 [X], 2.10.1 [   ], 5.6.2 [   ], 5.7.1 [   ], other :  
4. Products covered (HS or CCCN where applicable, otherwise national tariff 
heading. ICS numbers may be provided in addition, where applicable):  Concrete 
and concrete products (ICS 91.100.30)  
5. Title, number of pages and language(s) of the notified document:  DRS 425: 2020 
Admixtures used in concrete — Specifications for Fly Ash (15 page(s), in English)  
6. Description of content:  This Draft Rwanda Standard specifies requirements, inspection 
methods,  sampling and test methods of fly ash used for cement and concrete.  The 
Standard is applicable to the fly ash used as admixture at time of mixing mortar and 
concrete, and fly ash used as active addition at time of cement production.  
7. Objective and rationale, including the nature of urgent problems where 
applicable:  Prevention of deceptive practices and consumer protection; Protection of 
human health or safety; Quality requirements  
8. Relevant documents:   
• ASTM C311/C311M –13, Standard Test Methods fo r Sampling and Testing Fly Ash or 
Natural Pozzolans for Use in Portland -Cement Concrete    
• RS EAS 18 -2, Cement — Part 2: Conformity evaluation    
• RS EAS  131-1, Concrete — Part 1: Specification, performance, production and 
conformity  
• RS EAS 148 -1, Cement — Test methods — Part 1: Determination of strength    
• RS EAS 148 -2, Cement — Test methods — Part 2: Chemical analysis of cement  G/TBT/N/RWA/336  
 
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  • RS EAS 148 -3, Cement — Test methods — Part 3: Determination of setting time and 
soundness  
• RS EAS 148 -5, Cement — Test methods — Part 5: Pozzolanicity test for Pozzolanic 
cements    
• RS 211 -3: 2010 Mortar for masonry - Methods of Test: Part 3: Determination of 
consistence of fresh m ortar (by flow table)    
• RS EAS 148 -6: 2018 Cements — Test methods — Part 6: Determination of fineness    
• ASTM C187 – 16, Standard Test Method for Amount of Water Required for Normal 
Consistency of Hydraulic Cement Paste  
• ISO 19596: 2017 Admixtures for concr ete 
9. Proposed date of adoption:  To be determined  
Proposed date of entry into force:  To be determined  
10. Final date for comments:  60 days from notification  
11. Texts available from:  National enquiry point [X] or address, telephone and fax 
numbers and email and website addresses, if available , of other body:   
KK 15 Rd, 49  
Toll Free: 3250  
Tel: +250 788303492  
Email: info@rsb.gov.rw  
Website: www.rsb.gov.rw  
P.O.BOX 7099, Kigali, Rwanda  
https://www.rsb.gov.rw/fileadmin/user_upload/files/p df/new_stds/Public_review_040420/
DRS_425_ -_2020_Flyash_used_in_concrete_and_Cement.pdf  
https://members.wto.org/crnattachments/2020/TBT/RWA/20_2736_00_e.pdf