Do you want to know the new UNE EN 1504-9 agreement on the repair and protection of concrete blocks?

The truth is that corrosion, water infiltration, freeze and thaw cycles, structural damage ... can cause deterioration in concrete blocks. And, this is where the UNE EN 1504-9 agreement appears, which lays the foundations about the repair and protection of concrete products.


Thus, the UNE EN 1504-9 standard, on products and systems for the protection and repair of concrete structures. Definitions, requirements, quality control and conformity assessment. Part 2: Surface protection systems for concrete.2” Speaks about the object and the field of action, the consultation rules, and the terms and definitions. As well as the characteristics of the benefits for intended uses. It also talks about requirements, sampling, conformity assessment and marking and labeling.

Concrete blocks

Steps to follow for the repair and protection of concrete products

Thus, when managing a project with concrete blocks, the following steps are usually followed:

1st Creation of a report / study

With all the information about the structure: general condition and history, documentation, repair and maintenance programs. This step will help us understand the current situation of the structure.

2nd Assessment

We will carry out an in-depth study to know the damages (visible and non-visible), of the structure.

What defects can be found in concrete products? Three types: Mechanical, Chemical and Physical.

3rd Incident management

With all the information in hand, homeowners must decide on the proper strategy for repairing and protecting concrete blocks.

Let us give several examples: not taking actions and reducing capacity, demolition of the structure, total or partial reconstruction of it, prevention and / or reduction of future deterioration (but without repair).

What factors influence this management?

  • Expected service life after repair and protection
  • Safety
  • Durability
  • The possibility of additional repair work in the future.
  • The consequences and probability of structural failure, or partial failure
  • The environmental impact and the need for protection against environmental factors. The environmental impact or restrictions in the development of work
  • Noise and pollution
  • Future maintenance.
Concrete blocks

4th repair work

In EN 1504-9 standard, the repair work is defined, as well as the options that exist. And the following aspects will have to be taken into account:

  • The Type, causes and extent of defects
  • Future terms of service and maintenance schedule

In addition, the most suitable repair methods will also depend on other features:

  • Access to the workplace
  • Conditions of the area
  • Security and health

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