American Concrete Institute (Singapore Chapter)

13 Hillview Crescent, Singapore 669437

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ACI Singapore Chapter Presentation – Mass Concrete – How big is big?

November 14, 2023 @ 9:00 pm 10:00 pm SMT

Presenter: Robert Howell, PE, Engineer, American Concrete Institute Hosted by the ACI Singapore Chapter What is mass concrete? ACI 207.1R defines mass concrete as any volume of concrete with dimensions large enough to require that measures be taken to cope with the generation of heat from hydration of the cement and attendant volume change to minimize cracking. But how does one predict whether mass concrete problems will occur and what steps should be taken? This presentation will discuss how to identify mass concrete, ACI 301 requirements pertaining to it, and good construction practices. Topics covered in this presentation will include: • Examples of mass concrete structures • How to identify mass concrete based on ACI’s definition • Factors influencing concrete temperature in mass concrete • ACI 301 requirements for mass concrete By attending this session, you should be able to: 1. Understand the ACI definition of mass concrete 2. Discuss factors affecting concrete temperature in mass concrete. 3. Learn how to control concrete temperature through mixture proportioning and construction practices 4. Understand ACI specification requirements for mass concrete (ACI 301 section 8).

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