The American Concrete Institute (ACI) announced the return of its highly anticipated global event, 24 Hours of Concrete Knowledge. Now in its fifth year, this free, virtual conference will take place July 8 – 9, 2025, bringing together experts, professionals, and students worldwide for 24 continuous hours of learning, collaboration, and innovation. Hosted in cooperation with more than 20 ACI International Chapters and industry partners across multiple time zones, 24 Hours of Concrete Knowledge provides a platform for the global concrete community to exchange knowledge on the latest advancements, research, and trends in concrete technology and construction. Each event hour features presentations from a different region of the world, offering diverse perspectives and real-world case studies.

"ACI envisions a future where our stakeholders possess the knowledge and skills necessary to use concrete effectively in today’s ever-changing world,” said Frederick H. Grubbe, ACI executive vice president. “As participation in 24 Hours of Concrete Knowledge continues to grow, presenters and participants may disseminate and absorb educational and technical expertise throughout these critical global markets.”