Heavy machinery needs a floor that won't fail under pressure. I recommend PU...

https://landenuzqb895.theglensecret.com/what-is-fm2-flatness-and-when-is-it-required-for-forklifts

Heavy machinery needs a floor that won't fail under pressure. I recommend PU concrete for these zones to handle the heavy load. Expect to budget £45-£85 per sqm for a durable, professional finish that prevents costly downtime