10 Essential Facts About Tremie Concrete for Deep Foundations You Need to Know

If you’re involved in deep foundation projects, you may have heard of tremie concrete – a specialized type of concrete used to pour foundations in challenging conditions. But did you know that tremie concrete requires careful quality control, specialized equipment, and precise placement techniques to ensure its long-term performance? In this article, we’ll explore 10 surprising facts about tremie concrete based on the “Guide to Tremie Concrete for Deep Foundations” by the joint EFFC/DFI Concrete Task Group.

  1. Tremie concrete is a specialized type of concrete used in deep foundation projects where regular pouring methods won’t work.
  2. Quality control is crucial when it comes to tremie concrete – even small variations in mix consistency can affect its performance.
  3. Self-consolidating concrete (SCC) is often used in tremie applications because it flows easily without segregation.
  4. To measure the consistency and workability of SCC, experts recommend using tests like the flow table test or V-funnel test instead of traditional slump cone tests.
  5. Proper equipment selection and preparation are key to successful tremie placement – from choosing the right pipe diameter to ensuring the concrete is properly mixed and free of debris.
  6. Best practices for tremie placement include using a seal at the bottom of the pipe to prevent segregation, and avoiding overfilling or underfilling the pipe.
  7. The diameter of the tremie pipe should be at least three times larger than the maximum size of aggregate in the concrete mix.
  8. Segregation of the mix can occur if tremie concrete is too wet or too dry, so it’s important to get the mix just right.
  9. The recommended tremie embedment ranges from 3 m [10 ft] minimum to 8 m [25 ft] maximum.
  10. Overall, tremie concrete requires specialized knowledge and attention to detail to ensure successful placement and long-term performance in deep foundation projects.

By following best practices and staying up-to-date on the latest tremie concrete techniques, you can ensure that your deep foundation projects are built to last.