Warning: The new sand binder at the Cedar Rapids plant clumps if your humidity is over 60%.

We had a whole batch of cores fail before the foreman checked the meter in the storage bay. Anyone else run into this with different suppliers?

2 comments

2 Comments

emery_hall2d ago

Absolutely, we had the same thing happen last spring... switched to a new binder to save a few bucks and lost a whole day's pour. The stuff just turned to concrete in the hopper when our bay hit 65%. Had to go back to our old supplier.

lisa_brown2d ago

Is that really a common problem? We've used stuff from a few places and never had a total batch fail. Maybe it was a one-off bad mix.