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This month’s Q&A focuses on measuring F-numbers for slabs to receive a troweled finish in accordance with ASTM E1155-20, “Standard Test Method for Determining FF Floor Flatness and FL Floor Levelness Numbers.” Specifically, on Note 3 of the standard recommending that all project participants agree on the exact test apparatus to be used for contract specification enforcement.
Available in the following language(s): Spanish
This article discusses air-entrained concrete, advantages of air entrainment, the effects of supplementary cementitious materials (SCMs) on the air-entraining admixture (AEA) dosage, and the effects of production and construction variables on air content. It explains parameters such as total air content, air-void size and distribution, spacing factor, and specific surface, and summarizes testing methods and relevant specifications, as well as alternatives to AEA.
Available in the following language(s): Spanish
This is the third article from ACI Committee 562, Evaluation, Repair and Rehabilitation of Concrete Structures, discussing changes in ACI CODE-562-25. It focuses on providing background information on novel aspects currently included in Chapter 8—Reinforcement Details and Condition for Structural Evaluation and Repair Design and probable new directions for this chapter for the next edition of the Code.
Available in the following language(s): Spanish
Indonesia’s adoption of ACI provisions has advanced into organized action through the ACI Western Indonesia Chapter (ACI-WIC), established in 2023. Founded by 31 professionals involved with concrete design, construction, and technology, the Chapter aims to localize ACI knowledge, professionalize concrete practice, and cultivate future talent.
Available in the following language(s): Spanish
The awards recognize individuals and organizations that are redefining excellence, innovation, and leadership in concrete design and construction. The winning projects were announced at the 2025 ACI Excellence in Concrete Construction Awards Gala during the ACI Concrete Convention on October 27, in Baltimore, MD, USA.
Available in the following language(s): Spanish