What to do when the chipboard is stuck in the concrete?

[Björn2222]

Hi

We have used particleboard as formwork when casting an outdoor staircase. The staircase turned out great, but parts of the particleboard are "glued" to the concrete. It is very laborious to remove. Does anyone have a tip or trick that can ease the work?

All answers highly appreciated!
(And sorry for the Skavland language)
Regards, Bjørn

 

[Småbrukaren]

Reciprocating saw maybe?

 

[jonaserik]

The chipboard has absorbed the cement water and then it sticks; how thick is the casting, it might be possible to hit the board with a hammer/mallet so it kind of bounces and comes loose, but not guaranteed. If you are going to cast with boards, you should oil the surface, regular cooking oil works just fine instead of expensive form oil.

 

[Björn2222]

Thanks for the response! It was resolved with sdsdrill and wide chisel in a few hours. Next time it will be cooking oil