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Title: F-numbers and Textured Concrete Surface Finishes

Author(s): Lingfeng (Leo) Zhang, James Klinger, and Bruce A. Suprenant

Publication: Concrete International

Volume: 44

Issue: 5

Appears on pages(s): 33-41

Keywords: flatness, specification, test, project


Date: 5/1/2022

Swirl and broom finishes are typically specified for working surfaces of parking structures, parking lots, commercial pavements, or walkways. Unfortunately, the construction documents for many such projects specify unachievable F-numbers for slabs that are also specified to receive textured finishes. The article provides a bibliography of recommendations and requirements for slab F-numbers and finishes published in ACI documents, other industry resources, and sample project specifications, demonstrating that many conflicting requirements can negatively affect contractors charged with producing swirl and broom finishes.


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