Jerzy Zemajtis, PhD, PE, is a Senior Engineer at ACI. His role at ACI is to provide technical and administrative support to ACI's Technical Committees. He received his BS and MS in civil engineering from the Technical University of Gdansk, Poland, and his PhD in civil engineering from Virginia Tech.

Mr Zemajtis worked as a Structural Engineer in Virginia Beach, VA, and Vancouver, Canada, and as a Civil/Materials Engineer at Construction Technology Laboratories in Chicago, IL, before joining the ACI Engineering Department in 2010. He is a licensed engineer in Washington and British Columbia.

Presentation Information: This topic is both a contentious and unfortunately common issue. Often, the key to addressing cracking is learning how to properly determine the cause of the crack so it can be mitigated and prevented in future projects. Topics covered in this presentation will include:

• Causes and control of cracking
• Evaluation methods
• Mitigation
• Crack repair

Raffle Information: There will be a raffle follwing the presentation.  The winner will select one of the following (one-year access):

• ACI Individual Membership
  • Free digital access to ACI’s practices (all ACI guides and reports)
  • ACI University All-Access Digital Subscription
  • $259+ value
• ACI Collection of Concrete Codes, Specifications, and Practices
  • Always up-to-date
  • Includes historic codes and specifications
  • $859 value
• ACI University All-Access Digital Subscription
  • Webinars and on-demand courses
  • 260+ courses
  • $299 value
• ACI Concrete Repair Digital Subscription
  • 65+ codes, specifications, guides, reports
  • 16+ educational publications and 33+ courses
  • $249 value