G/TBT/N/UGA/587  
 
19 September 2016  
(16-4926) 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 : UGANDA   
If applicable, name of local government involved  (Article 3.2 and 7.2) :  
2. Agency responsible:  Uganda National Bureau of Standards.  
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 :  
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):  Cement, Portland 
cement, Portland  -slag cement, Portlan d silica fume cement, Portland  - Pozzolana cement, 
Portland -fly ash cement, Portland burnt shale cement, Portland  -limestone cement, 
Portland composite cement, Blast furnace cement, Pozzolanic cement, Composite cement.  
SALT; SULPHUR; EARTHS AND STONE; PLA STERING MATERIALS, LIME AND CEMENT 
(HS: 25), - Portland cement : (HS: 25232) . Cement. Gypsum. Lime. Mortar 
(ICS:  91.100.10)  
5. Title, number of pages  and language(s)  of the notified document:  DUS 310 -1:2016, 
Cement - Part 1: Composition, specification and  conformity criteria for common cements.  
(32 pages, in English)   
6. Description of content:  This Draft Uganda standard gives the specifications which include 
mechanical, physical and chemical requirements of 27 distinct common cements, seven 
sulphate resi sting common cements as well as three distinct low early strength blast 
furnace cements and two sulphate resisting low early strength blast cements and their 
constituents. The standard also gives the composition of each cement in terms of 
proportions and r equirements of the constituents which are to be combined to produce 
these distinct products in a range of nine strength classes.   Furthermore, this standard 
states the conformity criteria and the related rules. Necessary durability requirements are 
also gi ven. 
In addition to the specified requirements, an exchange of additional information between 
the cement manufacturer and user may be helpful. The procedures for such an exchange 
are not within the scope of this standard but should be dealt with in accorda nce with 
national standards or regulations or may be agreed between the parties concerned.  The 
word "cement" in this standard is used to refer only to common cements unless otherwise 
specified.  
7. Objective and rationale , including the nature of urgent pr oblems where applicable: 
Prevention of deceptive practices and consumer protection ; Protection of human health or 
safety ; Quality requirements  G/TBT/N/UGA/587  
 
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  8. Relevant documents:   
1. EN 197 -1: 2011; Cement - Part 1; Composition, specifications and conformity 
criteria for  common cements  
2. ASTM C311/C311M  - 13, Standard Test Methods for Sampling and Testing Fly Ash 
or Natural Pozzolans for Use in Portland -Cement Concrete  
3. ASTM C494/C494M  - 13, Standard Specification for Chemical Admixtures for 
Concrete  
4. ASTMC 1777 Standard Test  Method for Rapid Determination of the Methylene Blue 
Value for Fine Aggregate or Mineral Filler Using a Colorimeter  
5. DUS 310 -2, Cement - Part 2: Conformity evaluation  
6. DUS 310 -1, Concrete - Part 1: Specification, performance, production and 
conformity  
7. DUS 1 00-1, Cement - Test methods - Part 1: Determination of strength  
8. DUS 100 -2, Cement - Test methods - Part 2: Chemical analysis of cement  
9. DUS 100 -3, Cement - Test methods - Part 3: Determination of setting time and 
soundness  
10. DUS 100 -5, Cement - Test methods - Part 5: Pozzolanicity test for Pozzolanic 
cements  
11. DUS 100 -6, Cement - Test methods - Part 6: Determination of fineness  
12. DUS 100 -7, Cement - Test methods - Part 7: Methods of taking and preparing 
samples of cement  
13. EN 13639, Determination of total organic ca rbon content in limestone  
14. ISO 9277, Determination of the specific surface area of solids by gas adsorption 
using the BET method  
15. ISO 9286, Abrasive grains and crude - Chemical analysis of silicon carbide  
16. ISO 29582 -2, Methods of testing cement -Determination  of the heat of hydration - 
Part 2: Semi -adiabatic method  
9. Proposed date of adoption:  January 2017.  
Proposed date of entry into force:  Upon declaration as mandatory by the Minister for 
Trade, Industry and Cooperatives.   
10. Final date for comments:  7 November 2016  
11. Texts available from : National enquiry point  [ X ] or address, telephone and fax 
number s and e mail and website address es, if available , of other body:  
https://members.wto.org/crnattachments/2016/TBT/UGA/16_3792_00_e.pdf