Concrete standards

A part of the EN 1504 standard includes the functional characteristics of the products and the corresponding test methods.

With this method, the products are selected individually and for the specific case considered for the repair and protection of a concrete structure.

As a result, products are defined by a list of necessary functional characteristics instead of simple classifications, which leads to a high level of designer flexibility.

Finally, inspection and maintenance requirements must be defined by the designer.

Standard

The EN 1504-9 standard defines the performance characteristics for each repair method.

The designer selects performance characteristics based on the requirements of the specific restoration project and selected restoration methods.

Concrete and tile adhesive

According to the EN 1504-9 standard, the following options should be considered in deciding to meet future requirements

In the remaining period of the service life of the structures, the following should be considered:

– Do nothing for a certain time but monitor.

– Re-analyze structural capacity and performance degradation possibilities.

– Prevent or reduce further destruction.

– Renovate or replace all or part of the concrete structure.

Demolish all or part of the concrete structure.

Causes of concrete damage

According to the subsequent planning of the restoration, generally there should be a distinction between concrete damage and damage caused by Meiglard corrosion.

The main objectives of the evaluation are:

• Identifying the cause or causes of failures
• Determining the size of failures
• Identifying the location where failures can be expected to spread to the part of the structure that is currently affected
• Evaluating the effects of failures in the security of the structure
• Identify all areas that may need protection or repair.

Concrete restoration

Repair and reconstruction of concrete structures has become one of the important markets. For example,

The cost of maintaining bridges is more than one billion dollars per year.
The total maintenance costs of all types of buildings are estimated at more than twenty billion dollars annually.
A significant part of these costs is spent on repairing and protecting concrete structures.
Unlike the amount of labor spent on the construction of new structures, the cost of restoration and protection

As the age of the existing structures increases, it increases significantly. Extensive development of new methods and materials

For the restoration and protection of structures, the need for standards for such works has been felt.

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