Currently, there is a lack of scientific evaluation of the service life of various types of fire-retardant coatings in engineering environments. Manufacturers of fire-retardant coatings are unable to provide the service life and replacement cycles that can be used under different usage conditions in product specifications.Structural Steel Fire Retardant CoatingThe use of structural fire-retardant coatings is approached with a "set-it-and-forget-it" mindset. Research on the durability of structural fire-retardant coatings is an urgent task. It is necessary to establish evaluation standards and methods for the durability of fire-retardant coatings to scientifically determine the replacement or maintenance cycles or life spans.
Moreover, the maintenance of fire-retardant coatings is not as simple as repainting. Can repainting over the existing fire-retardant coating base meet the technical performance requirements? The challenges in repainting fire-retardant coatings, especially for concealed work, are how to overcome them. These are topics that require further study.
There are numerous manufacturers producing fire-resistant coatings for steel structures in China, with a wide variety of products available. However, there is no unified technical standard in place. The types of high-performance ultra-thin steel structure fire-resistant coatings and outdoor steel structure fire-resistant coatings are limited, so extreme caution should be exercised when using them.
Paint models must be approved by the design, construction, and fire departments. Fire-resistant coatings should maintain their long-term functionality as buildings are used over time. Therefore, after the fire-resistant coating is installed and inspected, maintenance and management should also be attended to.
One is to prevent damage from other operations or accidents, such as abrasion, rain, and contamination. Regularly inspect the integrity of the coating, ensuring no peeling occurs.
Coating must not exhibit any peeling.
Secondly, it is necessary to pre-fabricate test specimens for the flame-retardant foam coating during construction and regularly measure its foaming performance. When the foaming performance of the flame-retardant coating is lost, appropriate measures should be taken.
Section 3: Construction Quality of Fire-Resistant Coatings for Steel Structures
Fire-retardant coatings are considered complete only after they are applied and cured onto the surface of steel structures by engineering personnel.Structural Steel Fire Retardant CoatingThe entire process. The application of fire-retardant coatings is also part of the secondary production of fire-retardant coatings, and improper application can also affect the quality of the fire-retardant coating project for steel structures.
Determine the foam performance of fire-resistant coatings on a regular basis. When the foam performance of the fire-resistant coating is lost, appropriate measures should be taken.
Main issues encountered during the construction
1. The construction team lacks the required qualifications and has weak technical capabilities.
2. Neglecting the surface cleaning of the base material can affect the performance of fire-retardant coatings.
Before construction, there was no scientific construction plan, and the construction process failed to strictly inspect the construction quality according to technical standards.
4. Pursuing aesthetic appearance and smoothness, sanding the coating or applying common decorative paint on the exterior of fire-resistant coating layers, which makes it difficult to guarantee the technical performance of the coating.
5. The final acceptance of fire-resistant coatings relies solely on visual inspection and thickness measurement of the coating, lacking strict acceptance standards and testing methods.
