VEVOR Geotextile Fabric, 12.5 x 50 ft 3.5oz Woven PP Driveway Drain Cloth with 600lbs Tensile Strength, Heavy Duty Underlayment for Soil Stabilization, Landscaping, Weed Barrier, 12.5FT50FT-3.5OZ, Bla

Longevity & Waste: The "3.5oz commercial grade" rating means it is designed for burial; when shielded from UV light under soil or rock, it remains stable for decades rather than disintegrating quickly. Water Filtration: As a geotextile, it allows water to permeate the ground naturally, recharging local aquifers and reducing "heat island" effects compared to solid concrete or asphalt surfaces.

Erosion Control: It is labeled eco-friendly because it prevents soil runoff into local waterways, protecting aquatic habitats from being buried by sediment during heavy rain. Reduced Chemical Use: By suppressing weeds and stabilizing driveways, it reduces the need for toxic chemical herbicides and lessens the amount of gravel or asphalt required for construction.

I don't see the point in this but yes you can and I highly recommend wire mesh reinforcement at least.

Not sure why you'd want to pour concrete over this? It is for weed control and allows moisture to get into the soil and helps stabilize the soil some.

I don’t see why not. Not much different than poring over a plastic sheet moisture barrier except don’t expect it to act like a moisture barrier