Skip main navigation
Cement N Mark
Cement paddle

Cement N Mark

Cement N Mark

The N Mark certifies conformity with the requirements applicable to cement, demonstrating conformity with the Code on Receiving Cements (RC-16) and the applicable articles of the Code on Structural Concrete (EHE-08)

The N Mark for cement certifies conformity with the applicable provisions and requirements, beyond standardised measures, whilst also guaranteeing compliance with both national and European regulatory requirements, including the Code on Receiving Cements (RC-16) and the part of the Code on Structural Concrete (EHE-08) that applies to cement. Furthermore, and in accordance with Presidential Order PRE/1954/2004, which implements Directive 2003/53/EC, the N Mark complies with the requirement of water-soluble chromium content (VI) in cement.

The cement N Mark is ​accredited by the Spanish National Accreditation Entity (ENAC), is an Officially Recognised Symbol in accordance with the Cement Reception Instruction (RC-16) ​ of the Ministry of Public Works and Transport and is declared by the Ministry of Industry as an ​alternative to regulatory approval in accordance with Royal Decree 1313/1988, which stipulates that all cement used to manufacture concrete and mortar for all types of prefabricated works and products must be approved.

AENOR is accredited by ENAC to certify compliance with the regulatory requirements on cement not subject to the CE mark (white cement and SRC sulphate and seawater resistant cement) and to authorise distribution centres for all types of cement, in accordance with Royal Decree 605/2006, which approves the procedures for the application of Standard UNE-EN 197-2:2000 with regard to cement not subject to the CE mark and distribution centres for all types of cement.

AENOR certification enables manufacturers to place cement on the market and reassures users as it reduces the risk undertaken by consumers to a minimum level. It therefore facilitates on-site reception, reducing mandatory controls and thus facilitating the technical and documentary management on site. This cuts costs for all parties.

A very notable feature of AENOR certification is the monitoring of certified cement on the market, thus not only guaranteeing that the product complies with the established provisions, but also that it maintains the characteristics and properties from the time of its manufacture.

1. Cement in accordance with Standard UNE-EN 197-1

  1. Portland cement
  2. Portland compound cement
  3. Blast furnace cement
  4. Pozzolanic cement
  5. Compound cement

Some of the above cement products may also contain the following properties:

  • Sulphate resistance
  • Low hydration heat
  • Low initial resistance

2. Cement resistant to sulphates, according to Standard UNE 80303-1 (not included in Standard UNE-EN 197-1)

3. Cement resistant to sea water, according to Standard UNE 80303-2

4. Cement with low hydration heat, according to Standard UNE-EN 14216

5. Cement for masonry, according to Standard-EN 413-1

6. White cements according to Standard UNE 80305, i.e. cements that, as well as meeting any of the Standards UNE-EN 197-1, UNE-EN 14216 or UNE EN 413-1, also meet the whiteness requirement

7. Calcium aluminate cement, according to Standard UNE-EN 14647

8. Super sulphated cement, according to Standard UNE-EN 15743

9. Cement with additional specifications, that is, any of the above cements that, due to the needs of the market or the manufacturer itself, satisfy a requirement with a quantifiable and specific property in accordance with a standardised procedure

10. Special cement, according to Standard UNE 80307

AENOR, a conformity assessment company, is a leader in product certification. With more than 100,000 certified references, the AENOR​​ N Mark is present in over 40 countries and is among the top 5 product quality markings in the world.

​The AENOR N Mark is a voluntary mark that enables companies to demonstrate that their products comply with certain features of a UNE, EN or ISO standard or technical specification. AENOR's robust inspection of the manufacturing processes and testing of end products allows licensees of the Mark to put products on the market with a high standard of quality, creating trust between the manufactures and the users of their certified products.​​​

The Cement Reception Instruction (RC-16) approved by Royal Decree 256/2016​ establishes a set of technical specifications that cement must comply with until it is delivered. While voluntary, these certified products can boast quality markings that guarantee their compliance with standards, regulatory provisions or individual regulations from issuing agencies.

The AENOR N Mark is recognised by the Ministry of Public Works and Transport as the officially recognised symbol (DOR) of the RC-16. Products featuring an officially recognised quality assurance symbol have a greater level of guarantee than the minimum required by the RC-16, as they are subject to rigorous product controls during the manufacturing process, external verification via testing at ENAC accredited laboratories in accordance with EN ISO 17025 and audits and inspections of facilities, raw materials and quality control system. Certified cement is also monitored in the market. The entities that issue these certificates are accredited by ENAC in accordance with StandardEN ISO 17065 and guaranteed by the Public Administration responsible for official recognition.​

This way, the AENOR N Mark provides the following advantages:


The manufacturer

  • Better understanding of the product via the exhaustive controls required by the N Mark
  • Products that do not comply with relevant standards or regulations can be detected before they enter the market
  • Decreases production costs as a result of greater control during the manufacturing process
  • Rapid correction of potential deviations due to the level of automation
  • Decrease in fluctuations due to external agents
  • Systematisation and optimisation of production processes
  • Ongoing quality improvements
  • Security in compliance with Chrome VI​ content
  • There are commercial grounds to introduce the product into new markets and facilitate access to works
  • Customer assurance

Planners and builders

  • Information submitted is clear
  • Transportation and delivery is monitored
  • Streamlines the calculation and design of the structure
  • More favourable calculation criteria (lower safety coefficients, lower anchorage lengths, etc.)
  • In the phase preceding supply: ​The amount of monitoring documents required can be reduced and, in some cases, it will not be necessary to check either raw materials or the manufacturer's facilities or perform prior product tests
  • During the supply phase: experimental checks may not be required, which means that no tests will have to be performed when goods are received. This will generate substantial savings in monitoring the quality of the work
  • Collaboration with industry professionals

Technical management and ownership

  • Greater information on the products used on the work site and on their traceability, thus instilling greater confidence
  • Rigorous quality control at the factory
  • Simplified control programme
  • Savings on monitoring work
  • Accessibility to information from the factory control
  • Reduction of non-conforming products and associated costs
  • Reduction of risks
  • Quick intervention during incidences affecting product quality
  • Guarantee of required environmental compliance (ISMA)
  • ​Participation of an independent certification entity and the Public Administration
  • Elimination of bad practices​


By continually assessing cement on a monthly, quarterly and half-yearly basis, it is possible to pre-empt any incidents that may arise in connection with meeting compliance criteria.

Through the contrasting tools used by AENOR, mantiene the manufacturer's laboratory used for self-monitoring is maintained supervised, so that the relevant corrections are made and issues are avoided. Checks are also performed to verify that manufacturers' laboratories comply with the assurance requirements of laboratories that are verified via five annual inter-laboratory programmes and with the participation of a long list of both national and international laboratories (accredited, official, manufacturers, monitoring).

AENOR subjects cutting devices to monitoring programmes in order to ensure that the reference equipment AENOR uses serves as an assurance standard for the manufacturer and as a monitoring standard for the verifying laboratory.

The measuring equipment AENOR uses in its factory inspections features the calibrations used by ENAC accredited laboratories in order to ensure metrological traceability.

AENOR certifies cement by means of the following activities:

  • Systematic audit visits in accordance with international Standard ISO 9001
  • Three annual inspection visits in the factory installations, laboratory and shipping points
  • Taking monthly samples of the cement to be dispatched, both in bulk and bagged, in order to be checked by the accredited laboratory AENOR uses for such purpose
  • The manufacturer performs comparison checks of these samples in order to apply any corrections and analyse any variations in the way different laboratories apply ABBE secondary statistical criteria
  • Checking compliance with individual values over and above the standardised individual requirement
  • Monthly, quarterly and half-yearly assessment of additional compliance and checks
  • Taking samples from products on the market and assessing cement compliance and stock
  • Taking samples of the raw materials and performing tests
  • Controlling and monitoring performance times and communication of the results of both comparison and self-monitoring checks
  • Monitoring differences between verification laboratories and factories
  • Performing five annual inter-laboratory programmes
  • Performing half-yearly campaigns to monitor cutting devices performed by both AENOR and the verification laboratories
  • Verifying compliance with the water-soluble chromium VI content of cement via inspections, audits and testing of both bulk and bagged cement
  • Calculating the environmental sustainability index of each type of cement based on the characteristics of the factory and the internal processes used to manufacture cement
  • Accredited compliance procedure for Distribution Centre authorisations

The process ensures that the quality assurance system model used to manufacture and dispatch cement is based on ISO 9001 within the factory, at all distribution points and as regards monitoring transportation.

The process employed to monitor cement is exhaustive and monitors both the compliance of raw materials and the origin of the same.

For those cases where additional specifications must be checked using standardised methods in accordance with the relevant regulations due to the market's, the users' or the manufacturer's own requirements.

​​Once the certification process has been completed, the organisation will obtain:

  • AENOR product certificate and its technical annex
  • A licence to use AENOR's Mark of certified products
AENOR N Mark logo for a certified product​​

GlobalEPD Declarations

Environmental product declarations (EPD)

EDP for cements in accordance with Standard EN 15804

European Passport

​​The CE MARK is a passport for building products

The CE mark provides access to the European Economic Area for construction products