How to stop a fluid sim from flowing

I have to do an animation of concrete pouring. After about a 100 frames the concrete needs to stop pouring and just settle. I can’t for the life of me figure out how to do this. The only thing I know to do is animate the Inflow object moving out of the Domain box. This causes the fluid to splash and stick on the side of the Domain object. All the documentation I can find is about the 2.4 version of Blender. Any ideas?

Keyframe on/off the inflow