Sessions & Events

 

Please note: All sessions and events take place in Central Daylight Time: CDT (UTC-5).

H=Hyatt Regency Dallas; U=Union Station

MINI SESSION: Overview of the New PRC-215: Concrete Structure Design for Fatigue Loading

Sunday, October 23, 2022  12:30 PM - 1:30 PM, H-Landmark C

In the nearly 50 years since ACI 215R-74 was published, the design of concrete structures has changed considerably. The introduction of high-performance materials, greater design optimization, and/or increases in applied load levels result in higher ratios of live to dead loads. This session will introduce the new and completely restructured PRC-215 document as a resource for engineers designing structures that may be subjected to fatigue.
Learning Objectives:
(1) Recognize what content is covered in the new PRC-215 document on fatigue;
(2) Discuss how this resource is intended to be used;
(3) Explain the basic concepts of fatigue and why it is an important consideration in the design of many concrete structures;
(4) Report on the fatigue behavior of common constituent materials and components used in the construction of concrete structures.


Fatigue of Plain Concrete

Presented By: Miguel Vicente
Affiliation: Universidad De Burgos
Description: Overview of Chapters 1 and 3 of PRC-215. Basic concepts of fatigue and its effects on plain (unreinforced) concrete will be discussed. Topics covered during this presentation include fatigue as a degenerative process, fatigue life models, and important parameters influencing fatigue. This presentation is likely to be of interest for practitioners dealing with applications of unreinforced concrete, as well as those seeking to develop a better understanding of the mechanisms of fatigue in concrete.


Fatigue of Reinforcing Materials

Presented By: Martin Noel
Affiliation: University of Ottawa
Description: Overview of Chapter 4 of PRC-215, including the effects of fatigue on steel and FRP reinforcing materials. The effects of material type and geometry, stress level, and mechanical properties on the fatigue performance of steel reinforcement will be discussed. Fatigue damage mechanisms in FRP materials and the effects of fiber and matrix type will also be presented.


Fatigue of Reinforced and Prestressed Concrete

Presented By: Fadi Oudah
Affiliation: Dalhousie University
Description: Overview of Chapters 5 and 6 of PRC-215, focusing on the effects of fatigue on reinforced and prestressed concrete members. This includes flexural fatigue, shear fatigue, bond fatigue, and dowel fatigue, among other topics. The effects of fatigue on fully and partially prestressed concrete members will also be discussed.


Fatigue of Fiber-Reinforced or Externally Strengthened Concrete

Presented By: Miguel Vicente
Affiliation: Universidad De Burgos
Description: Overview of Chapters 7 and 8, focusing on the effects of fatigue on concrete reinforced with discrete fibers, as well as reinforced concrete members strengthened with FRP or FRCM systems. Fatigue mechanisms in fiber-reinforced concrete under either compression or tensioned and reinforced with various fiber types (e.g., steel, glass, or synthetic) will be presented. Additionally, the performance of concrete members strengthened externally using composite sheets or laminates will be discussed.

Upper Level Sponsors

Ash Grove
Baker
Conseal
Controls Group
Euclid Chemical
GCP
Master Builders
PoreShield
PS=0
ACI Northeast Texas Chapter

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