When to check behind vs. when to value bet....

[LuvDemNutz]

5/10 NL - I have only seen Villain play one hand - he raised to $20 UTG+1 with KK -
flop came 3 A J r - he check/called $40 - turn was a K - he led for $100 and was minraised, he called, river was blank and he check-called $200. The other guy had AA so Villain's passive play saved him money here.

On to the hand...

Villain ($710) limps UTG I ($1200) raise on Button to $45 with AsKs

only Villain calls -

Flop ($105) 4c Ad Kc

I bet $80, he calls.

Turn ($245) 6h

I bet $145 - he calls.

River ($535) - 9d

Is this a clear value bet?

If so how much are you betting here?