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Browse from hundreds of recorded presentations from ACI Conventions and other concrete industry events.

This Week's Featured Presentation

Status of the ACI 318-25 Building Code Requirements for Structural Concrete
Presented by: Andrew Taylor, KPFF Consulting Engineers

Presentation details

13th International Workshop Session: Status of the ACI 318-25 Building Code Requirements for Structural Concrete (ACI Spring 2024, New Orleans, LA) The session will consist of a single presentation, approximately 75 minutes in length, addressing three topics: the status of the current edition of the ACI 318 Code, ACI 318-19; the activities and scope of the work undertaken by the ACI 318 Code committee from 2019 to the present; and likely trends to expect in revisions to the provisions of the Code in 2025. The presentation will be followed by a 15-minute period for questions and answers.


Upcoming Presentation

July 15 - 21

Finite Element Analysis of the Interface between FRP and Concrete
Presented by: Todor Zhelyazov, Reykjavik University, Iceland

Presentation details

Advanced Analysis of FRP Reinforced Concrete Structures (ACI Spring 2024, New Orleans, LA) The study delves into modeling the interface between Fiber-Reinforced Polymer (FRP) and concrete, with a specific emphasis on simulating the gradual deterioration of bond strength. A model rooted in continuum damage mechanics is integrated with an empirically derived relationship to address interfacial shear failure. Material models are defined for the concrete, the externally bonded FRP reinforcement, and the adhesive layer. These material models are implemented in finite element simulations, replicating experimental setups widely used to investigate the FRP-concrete interface. Key results are reported and discussed. More precisely, the numerically obtained load-slip relationships for the interface and visualizations of the damaged zones in concrete are provided. The numerical results are in close agreement with existing experimental data. The finite element analyses suggest that concrete degradation is not limited to the areas near the adhesive joint. This implies that the adhesive joint could influence the overall behavior of the structural elements, even when debonding failures are prevented by anchorage devices.

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