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Title: Interactions between Surface Coatings and Their Concrete Substrate

Author(s): D. W. S. Ho and S. L. Mak

Publication: Symposium Paper

Volume: 193


Appears on pages(s): 371-380

Keywords: carbonation; coating; concrete; curing

Date: 8/1/2000

Protective coatings are often used to waterproof their substrate, to increase the durability of concrete, or simply to improve the aesthetics of a structure. However, there are side effects. For example, coatings that shed water would inhibit the curing effect that could be derived from subsequent wetting due to outdoor exposure. A protective coating could also increase the carbonation of its substrate since it provides a favourable dry environment for carbonation to proceed. This paper presents long-term results to illustrate these two ‘side effects’ on the use of protective coatings.


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