To pour concrete ove asphalt or not to pour concrete over asphalt.
blacktop's spec'd as ' acc ' ( asphalt cement concrete [ flexible pavement ] ) & what WE know as conc is spec'd ' pcc ' ( portland cement concrete [ rigid pavement ] ),,, since its the interior floor of your shop, i wouldn't worry about sub-base,,, remember helping my father place conc floor in our monument shop ( on dirt ) over 60yrs ago,,, its still serviceable, no random crk's, & paste cover's still good despite yrs of alum oxide abrasion,,, no mesh/rebar ( fiber hadn't been invented yet ), good jnt pattern, 5" conc floor w/turned-down edge & 3' deep footers in upstate ny.
adding your location would've been a great help & might have lowered speculation.
Last edited by stadry; 03-10-2013 at 10:55 AM.
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