Post by somratislam2 on Feb 15, 2024 10:45:02 GMT
The standard that currently governs is the EHE-08 “ Structural concrete instruction ”, which in its article 5 on requirements, establishes: “A structure must be designed and built so that, with acceptable safety, it is capable of withstanding all the actions that may be requested during construction and the useful life period foreseen in the project as well as the aggressiveness of the environment.” The “ useful life of a structure ” is understood to be the period of time, starting from its commissioning, during which it must maintain acceptable safety, functionality and appearance conditions.
During this period it will require adequate normal conservation but will not require rehabilitation operations. However, there are times when this rehabilitation is necessary, such as when pathologies occur and you want to Azerbaijan Email List prolong its useful life. Attacks With the passage of time, it has been seen that reinforced concrete is more vulnerable than previously thought: The increasing pollution of our urban and industrial environment produces gas emissions into the atmosphere, which transform the acidity characteristics of the concrete and They destroy the passivating layer of steel in their armor.
The porous structure of the concrete itself makes it permeable to the penetration of gases and water, which is the means of penetration of chlorides present in the marine atmosphere or in water runoff contaminated with de-icing salts in road structures in Cold climates. Also in this case, it is the corrosion of the steel reinforcements that will occur. In other cases, the contact of concrete with groundwater or soils with high sulfate content can lead to aggression that produces the development of expansive compounds that destroy the internal structure of the concrete matrix. Concrete surface protection systems Among the concrete repair systems , we find surface protection systems (EN 1504-2) to increase the durability of the structure.
During this period it will require adequate normal conservation but will not require rehabilitation operations. However, there are times when this rehabilitation is necessary, such as when pathologies occur and you want to Azerbaijan Email List prolong its useful life. Attacks With the passage of time, it has been seen that reinforced concrete is more vulnerable than previously thought: The increasing pollution of our urban and industrial environment produces gas emissions into the atmosphere, which transform the acidity characteristics of the concrete and They destroy the passivating layer of steel in their armor.
The porous structure of the concrete itself makes it permeable to the penetration of gases and water, which is the means of penetration of chlorides present in the marine atmosphere or in water runoff contaminated with de-icing salts in road structures in Cold climates. Also in this case, it is the corrosion of the steel reinforcements that will occur. In other cases, the contact of concrete with groundwater or soils with high sulfate content can lead to aggression that produces the development of expansive compounds that destroy the internal structure of the concrete matrix. Concrete surface protection systems Among the concrete repair systems , we find surface protection systems (EN 1504-2) to increase the durability of the structure.