EUROLAB laboratory provides testing and compliance services within the scope of EN ISO 2812-2 standard. This part of the International Standard EN ISO 2812 specifies a method for determining the resistance of a single-layer or multi-layer system of coating materials to the effects of water by partial or full immersion. This method allows determining the effects of water on the pavement and, if necessary, assessing the damage to the substrate.
A coated test panel is immersed in water and the effects of immersion are evaluated according to criteria previously agreed between the parties concerned, these criteria are often subjective.
All parts of the device that come into contact with water must be made of inert materials. Tank of suitable size, equipped with a lid, a heater and thermostatic control. Example of a suitable tank size
as 700 mm × 400 mm × 400 mm. System or mixing device for the circulation and aeration of water used in combination with a dry, oil-free compressed air supply. If a pump is used, it will be of adequate capacity to agitate the entire contents of the tank.
Panels made of electrically non-conductive material, test surface at the top, and the flow direction of the water in the tank. The panels shall be spaced at least 30 mm apart, at a distance of at least 30 mm from the bottom of the tank and at least 30 mm from the walls of the tank. Unless otherwise agreed, their position will be periodically changed mechanically or manually.
Test pieces can be partially or completely submerged. If partial immersion is required, the test pieces shall be immersed by three quarters of their length. If full immersion is required, the test pieces should be immersed so that the water level is at least 50 mm above the top of the test piece to avoid the effects of waterline oxygen concentration difference.
At the end of the specified test period, remove each panel from the tank and dry the panels by wiping them with lint-free absorbent paper. If necessary, within 1 minute, inspect the entire test surface of each panel for blistering or other signs of coating deterioration as described in ISO 4628-2. If necessary, the evaluation of the adhesion change described in ISO 4624 should also be made at this stage.
Allow panels to remain at room temperature for 24 hours and inspect the test surface of each panel for blistering or other agreed upon characteristics, such as loss of adhesion, rust stain, discoloration or brittleness, per ISO 4628-2.
If indicated, carefully remove a 150 mm × 50 mm strip from the test surface with a non-abrasive paint remover and inspect the exposed metal for signs of corrosion. For reference, protect the exposed area with a suitable clear coat.
Among the services provided by our organization within the framework of material testing services, there are also EN ISO 2812-2 standard tests. Do not hesitate to contact our laboratory EUROLAB for your testing and certification requests.
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EUROLABreporting and certification activities, United Accreditation Foundation (UAF), Turkish Accreditation Agency (TÜRKAK) ve Enterprise Accreditation Foundation (EAF) based on the accreditation provided by the accreditation body. The Enterprise Accreditation Foundation (EAF) accreditation body is also a signatory of the United Nations (UN GLOBAL COMPACT) organization.
