Wait… we have 3 possible names now.

The POI is currently named "Cement Truck".

You seem to have attempted to rename it into "Concrete Truck" in Organic Maps but did not upload.  And now you say "Concete Truck".  (I guess you meant Concrete but how could we know?)

Your note sounds like you are requesting that local mappers to go there and double check your claim.  If you were there, maybe taking a picture of the sign along the artwork, if any, would have removed all doubt: if a name is posted locally, that name will usually prevail on the map.

The artist’s website says that "Cement Truck" is the official name.
https://wimdelvoye.be/work/gothic-works/cement-truck-1/

We are a friendly community of mappers here and maybe that one of us will walk up there to check.  Maybe you can help too.  Otherwise, I am afraid we cannot confirm the name change you requested.