Title:
Concrete Q&A: Coefficient of Friction for Not Intentionally Roughened Contact Surface and Verifying Compliance Requirements for Intentional Roughening per Table 22.9.4.2 in ACI CODE-318
Author(s):
Publication:
Concrete International
Volume:
47
Issue:
6
Appears on pages(s):
64
Keywords:
concrete, section, roughness, contact
DOI:
Date:
6/1/2025
Abstract:
This month’s Q&A discusses changes in ACI CODE-318-25 for coefficient of friction for concrete placed against hardened concrete that is clean, free of laitance, and not intentionally roughened, as well as new provisions for determining if an intentionally roughened surface meets the 1/4 in. roughness specified in Table 22.9.4.2.