Over 30 years of salt mining has deteriorated the facility and required concrete repairs. The walls, columns, beams and secondary components have obvious weathering, peeling and structural degradation.

Because the facility is located near the lake, it is easily affected by severe lake water, resulting in excessive moisture and extremely cold weather. The salt-making environment can cause a large amount of chloride ion migration, steel swelling/burst, and subsequent concrete spalling.

After the design and general contracting decision, a composite fiber system-carbon fiber was used to replace the lost tensile strength and shear strength in the outer wall, the target column and the inner support.

Carbon fiber repaired and reinforced the entire area, extending its service life by 30 years.