EP #172: Is Your Concrete Mix Eating Your Formwork?

ON THIS EPISODE OF THE CONCRETE LOGIC PODCAST

Why aren’t your concrete forms and release agents performing like they used to?

Seth is joined by Ken Pratt, technical director at Swanson Group, and Jonas DeWeber, strategic account manager at Nox-Crete, to discuss what changing concrete mixes mean for formwork.

They explain why they believe more reactive mixes are contributing to shorter plywood life, release problems, and unexpected concrete finishes.

Seth questions whether adjusting the release agent could solve the problem, or whether contractors need to rethink the entire combination of concrete, plywood, and release agent.

The conversation raises a practical question: Are you selecting formwork for the concrete you’re placing today, or the concrete you worked with five years ago?

WHAT YOU’LL LEARN

How Ken and Jonas connect C595 blended cement mixes to changes in formwork performanceThe difference between barrier and reactive release agentsHow concrete chemistry and exposure time can affect plywood overlaysWhat distinguishes MDO, HDO, and phenolic surface filmWhy an overlay designation alone may not define the performance you needHow release-agent selection can affect stripping and surface appearanceWhy Ken is researching melamine overlays and what challenges remainWhy concrete discoloration may involve more than plywood or release agentsHow pre-bid collaboration and mock-ups can help prevent costly surprisesWhy finish requirements and specified form materials sometimes conflictCHAPTERS

(01:43) Introduction and episode overview

(02:08) Guests’ backgrounds and concrete formwork experience

(03:02) Supporting the podcast and listener engagement

(05:03) C595 blended cement and formwork performance