Due to the additional protective effect of the plaster layer on ordinary concrete structural components, even if the steel reinforcement protective layer does not meet the requirements, the risk of steel reinforcement corrosion will not significantly increase under general environmental conditions; Even if the steel bars are corroded, maintenance is relatively easy.
Without a plaster layer on the surface of plain concrete, the risk of steel corrosion will significantly increase when the thickness of the protective layer is insufficient; Once the steel bars corrode, repairing them is also quite difficult.
It is difficult to ensure that the appearance indicators such as surface color, texture, and flatness are consistent with the original surface during subsequent maintenance, which is a major challenge in the repair of plain concrete structural components.
In the past 20 years, many plain concrete structures have been constructed across the country, and their unique architectural shapes and natural decorative effects have added luster to urban landscapes.
But many of the surfaces of plain concrete structures have suffered durability damage and are facing the challenge of repair and treatment.
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