AASHTO M 224-91 (2019)
- Standard Specification for Use of Protective Sealers for Portland Cement Concrete
- standard by American Association of State and Highway Transporta
- Category: AASHTO
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This guide includes the selection factors for and use of protective sealers for highway purposes to be applied to hardened concrete for the purpose of protecting new concrete or prolonging the life of sound, in-service concrete. Information in this guide is not applicable to the repair of badly deteriorated concrete.
Sealers may be divided into two basic types: coatings, which remain on the surface; and penetrants, which penetrate into the concrete to some measurable depth.
Sealers may be divided into two basic types: coatings, which remain on the surface; and penetrants, which penetrate into the concrete to some measurable depth.
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