Conrete floor silage pit joint sealing

[DaveGrohl]

We have a silage pit that was put up some years ago by ourselves but we didn't seal the joints in any way. I'm proposing cutting down the joints with a stihl saw and filling the resultant slot with some sort of effluent resistant joint sealer. What should I be looking at? There are some bits near the back of the pit where the joint crack has become a little "wide". Some short joint lengths have gapped to about 3 inches, might we need a different product for those?

Are you just going to tell me to ring Quattro?

TIA.

 

[Will Wilson]

There's some info here - https://www.arconsupplies.co.uk/uses/repairing-protecting-sealing-silage-clamps-silage-pits

 

[How much]

Never done a silage pit but I used bitumen on warehouse floor expansion joints
I got a block of bitumen from a flat roofing company , chipped it up and put it in steel watering can heated it up with propane ring , then just pored it in the cleaned out joint it worked ok but was a bit time consuming due to the qty you could melt at once